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Radiation-sensitive composition or product

Subclass of:

430 - Radiation imagery chemistry: process, composition, or product thereof

430031000 - ELECTRIC OR MAGNETIC IMAGERY, E.G., XEROGRAPHY, ELECTROGRAPHY, MAGNETOGRAPHY, ETC., PROCESS, COMPOSITION, OR PRODUCT

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
430570100 Having plural conductive layers 267
430066000 Product having overlayer on radiation-conductive layer 51
430060000 Product having layer between radiation-conductive layer and base or support 15
430070000 Radiation-conductive composition contains carbocyclic ring only 13
430075000 Radiation-conductive composition contains hetero ring 11
430096000 Binder for radiation-conductive composition 10
430069000 Including conductive base or support 9
430084000 Inorganic radiation conductive composition 4
20120244464INTERMEDIATE TRANSFER MEMBER - The present teachings provide an intermediate transfer member which includes a substrate layer and a surface layer disposed on the substrate layer. The surface layer includes a plurality of core-shell particles wherein the core is a conductive particle and the shell is a fluoroplastic dispersed in a fluoroelastomer.09-27-2012
20120244463INTERMEDIATE TRANSFER MEMBER - There is disclosed an intermediate transfer member that includes a layer of a polymer blend of polyimide and amino silicone having conductive particles dispersed therein.09-27-2012
20100190100FUSER MATERIAL COMPOSITION COMPRISING OF A POLYMER MATRIX WITH THE ADDITION OF GRAPHENE-CONTAINING PARTICLES - Exemplary embodiments provide material compositions useful for electrophotographic devices and processes. The material composition can include a plurality of graphene-containing particles dispersed or distributed in a polymer matrix. Such material composition can be used for electrophotographic members and devices including, but not limited to, a fuser member, a fixing member, a pressure roller, and/or a release donor member. In one embodiment, a material composition dispersion can be applied on a substrate in electrophotography to form a functional member layer to control, e.g., to improve, at least one of thermal, mechanical and/or electrical properties.07-29-2010
20120288788INTERMEDIATE TRANSFER MEMBER - Described herein is an intermediate transfer member that includes a layer of phenoxy resin having dispersed therein graphene particles.11-15-2012
430083000 Sensitized or doped organic radiation conductor 1
20090004588Photoconductor structure processing methods and imaging device photoconductor structures - Photoconductor structure processing methods and imaging device photoconductor structures are described. According to one embodiment, a photoconductor structure processing method includes processing a photoconductor structure of an imaging device and wherein the photoconductor structure comprises charge transport material configured to conduct electrical charges generated responsive to reception of light to form a latent image during an electro-photographic imaging process, the processing comprising removing at least some of the charge transport material from at least a portion of the photoconductor structure. The photoconductor structure may also be further treated to reduce the migration of charge transport material. Additional embodiments are described in the disclosure.01-01-2009
Entries
DocumentTitleDate
20090220875ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - The present invention provides an electrophotographic photoconductor having a support, at least an intermediate layer, and a photosensitive layer, the intermediate layer and photosensitive layer being laid in this order over the support, wherein the intermediate layer comprises an amorphous oxide semiconductor.09-03-2009
20130137026ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member includes a support, a charge-generating layer disposed on the support, and a charge-transporting layer disposed on the charge-generating layer, in which the charge-generating layer contains a charge-generating substance and a compound represented by the formula (1). A process cartridge includes the electrophotographic photosensitive member described above. An electrophotographic apparatus includes the electrophotographic photosensitive member described above.05-30-2013
20110207041ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - The present invention provides an electrophotographic photoreceptor including at least an electroconductive substrate and a photosensitive layer provided on or above the electroconductive substrate, wherein an outermost layer of the electrophotographic photoreceptor is a layer composed of a cured film of a composition including at least one of compound having a chain-polymerizable functional group and a charge-transportable backbone in the molecule thereof, a polymerization initiator and a radical deactivator.08-25-2011
20110195353SINGLE LAYER PHOTORECEPTOR COMPRISING HIGH MOBILITY TRANSPORT MIXTURES - The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. In particular, the present embodiments pertain to an improved imaging member comprising a single layer in which the single layer further comprises a combination of one or more high mobility hole (charge) transport molecules and electron transport molecules.08-11-2011
20100119962(METH)ACRYLIC FILM, AND MARKING FILM AND RECEPTOR SHEET USING THE SAME - The present application is directed to a film having high solvent resistance, in addition to high tensile strength and elongation characteristics. A (meth)acrylic film formed of: (A-1) an acidic group-containing (meth)acrylic polymer having a glass transition temperature (Tg) of 0° C. or higher obtained by copolymerizing a composition containing a monoethylenically unsaturated monomer as a main component and an unsaturated monomer having an acidic group; (B-1) a basic group-containing (meth)acrylic polymer having a glass transition temperature (Tg) of 0° C. or lower obtained by copolymerizing a composition containing a monoethylenically unsaturated monomer as a main component and an unsaturated monomer having a basic group; and (C) a compound containing a radical generating group.05-13-2010
20130078560LOW-WEAR PHOTORECEPTOR SURFACE LAYER - A robust imaging member, such as long life photoreceptor, comprising a structured organic film comprising a plurality of segments and a plurality of linkers arranged as a covalent organic framework.03-28-2013
20130078561ROBUST PHOTORECEPTOR SURFACE LAYER - A imaging member, such as a photoreceptor, comprising a structured organic film comprising a plurality of segments and a plurality of linkers arranged as a covalent organic framework, wherein the structured organic film may comprise at least one secondary component, such as an antioxidant.03-28-2013
20130157181ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, ELECTROPHOTOGRAPHIC APPARATUS AND PROCESS CARTRIDGE - An electrophotographic photoconductor including: an electroconductive substrate; an intermediate layer; and a photoconductive layer, the intermediate layer and the photoconductive layer being on the electroconductive substrate, wherein the intermediate layer includes an inorganic pigment and a binder resin, wherein a volume ratio of the inorganic pigment in the intermediate layer is 30% by volume to 50% by volume, wherein the inorganic pigment comprises titanium oxide and a content of the titanium oxide in the inorganic pigment is 70% by mass to 90% by mass, wherein the inorganic pigment has a specific surface area of 70 m06-20-2013
20130157180ELECTROPHOTOGRAPHIC PHOTORECEPTOR HAVING EXCELLENT LIFETIME CHARACTERISTICS AND CHARGE UNIFORMITY, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND ELECTROPHOTOGRAPHIC CARTRIDGE USING THE ELECTROPHOTOGRAPHIC PHOTO RECEPTOR - Provided is a laminate type electrophotographic photoreceptor including an electrically conductive substrate, and an undercoat layer, a charge generation layer, and a charge transport layer sequentially disposed on the electrically conductive substrate, in which a characteristic response time of the photoreceptor is about 10 msec or more and about 85 msec or less and a thickness of the charge transport layer is greater than about 18 μm and equal to or less than about 45 μm. Also, an electrophotographic image forming apparatus and an electrophotographic cartridge using the electrophotographic photoreceptor are provided. An electrophotographic photoreceptor according to the present general inventive concept has an improved response time and thus, charge stain characteristics are excellent even when a thick charge transport layer is selected. Therefore, the electrophotographic photoreceptor of the present general inventive concept may have both excellent lifetime characteristics and excellent charge stain characteristics.06-20-2013
20100104963NANOSIZED PARTICLES OF BENZIMIDAZOLONE PIGMENTS - A nanoscale pigment particle composition includes an organic benzimidazolone pigment, and a sterically bulky stabilizer compound, wherein the benzimidazolone pigment associates non-covalently with the sterically bulky stabilizer compound that is a substituted pyridine derivative; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale pigment particles.04-29-2010
20110311907ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND IMAGE FORMING METHOD - Reduced are interferential streaks in a halftone image, which are produced when using a cylindrical photoreceptor conductive substrate having been subjected to tool bit cutting processing, and provided are an electrophotographic photoreceptor capable of obtaining high image quality in response to a light printing field or the like and an image forming method employing the electrophotographic photoreceptor. Disclosed is an electrophotographic photoreceptor possessing a cylindrical substrate having been finished via cutting processing and provided thereon, a photosensitive layer, wherein among peaks other than at a lag of 0 in a correlogram of a substrate surface profile in a direction along a central axis of the substrate, a mean value from a maximum peak in height to a third peak in height is 0.3-0.8, each of the peaks in height corresponding to an autocorrelation coefficient.12-22-2011
20130029256ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - The electrophotographic photosensitive member includes a surface layer containing (α), (β) and (γ).01-31-2013
20120164567MULTILAYER ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR AND IMAGE- FORMING APPARATUS - A photosensitive layer in a multilayer electrophotographic photoconductor includes a charge-generation layer including a charge-generating material having, as a major component, a titanyl phthalocyanine crystal which satisfies the conditions (A) and (B) below and a base resin, and a charge-transport layer including a charge-transporting material, the charge-generating material having, as a major component, the titanyl phthalocyanine crystal which has absorption at a wavelength of a charge-neutralizing light and which satisfies the conditions (A) and (B) or an X-form metal-free phthalocyanine crystal which has absorption at the wavelength of the charge-neutralizing light, and a binder resin. (A) In a Cu—Kα characteristic X-ray diffraction spectrum, one peak is present at a Bragg angle 2θ±0.2°=27.2°. (B) In a differential scanning calorimetry, one peak is present in a range of 270° C. to 400° C. except for peaks attributed to vaporization of adsorption water.06-28-2012
20130052575ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, PROCESS CARTRIDGE INCLUDING THE SAME, AND IMAGE FORMING APPARATUS INCLUDING THE SAME - The present invention provides an electrophotographic photoconductor including an intermediate layer having sufficient electron transportability and blocking property and capable of suppressing image defects such as fogging and dots. The electrophotographic photoconductor according to the present invention includes a conductive support, a photosensitive layer disposed on the conductive support, and an intermediate layer disposed between the conductive support and the photosensitive layer, wherein the intermediate layer comprises metal oxide particles and a binder resin. The metal oxide particles are surface-treated with an alkoxysilane oligomer represented by the following Formula (1):02-28-2013
20130052574ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE-FORMING APPARATUS, AND ELECTROPHOTOGRAPHIC CARTRIDGE - The invention can provide an electrophotographic photoreceptor comprising a photosensitive layer containing a specific charge transport material and a specific copolymerized polycarbonate resin, and an image-forming apparatus and an electrophotographic cartridge which use the electrophotographic photoreceptor.02-28-2013
20130052573NOVEL REACTIVE COMPOUND, CHARGE TRANSPORTING FILM, PHOTOELECTRIC CONVERSION DEVICE, ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND METHOD OF PRODUCING THE SAME, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - Provided is a reactive compound represented by the following General Formula (I):02-28-2013
20130052572COMPOUND, CHARGE TRANSPORTING FILM, PHOTOELECTRIC CONVERSION DEVICE, AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR USING THE COMPOUND, METHOD OF PRODUCING ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - Provided is a compound represented by the following Formula (I):02-28-2013
20130052571NOVEL COMPOUND, CHARGE TRANSPORTING FILM, PHOTOELECTRIC CONVERSION DEVICE, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - Provided is a compound represented by the following General Formula (I):02-28-2013
20130052570CHARGE-TRANSPORTING FILM, PHOTOELECTRIC CONVERSION DEVICE, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A charge-transporting film includes a polymer of a compound represented by Formula (I):02-28-2013
20130137025ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD OF PRODUCING PHTHALOCYANINE CRYSTAL, METHOD OF PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC APPARATUS, AND PHTHALOCYANINE CRYSTAL - Provided is an electrophotographic photosensitive member including a support and a photosensitive layer formed on the support, in which the photosensitive layer includes a phthalocyanine crystal containing a compound satisfying the following formulae (A) and (B) in itself: 8.9≦δP≦10.7 (A) and −3.2≦L≦−1.5 (B) (in the formula (A), δP represents a polar term of Hansen Solubility Parameters, and in the formula (B), L represents an energy level (eV) of an LUMO (lowest unoccupied molecular orbital) obtained as a result of structural optimization calculation based on density functional calculation B3LYP/6-31G).05-30-2013
20090042116METHOD FOR PRODUCING alpha-FORM TITANYLPHTHALOCYANINE AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR COMPRISING alpha-FORM TITANYLPHTHALOCYANINE - The present invention relates to a method for producing an α-form titanylphthalocyanine represented by the formula (1):02-12-2009
20130059242PHOTORECEPTOR, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A photoreceptor including an electroconductive substrate; a photosensitive layer on the electroconductive substrate; and a protection layer on the photosensitive layer, wherein the protection layer includes a radical polymerizable compound having three or more radical polymerizable groups without a charge transportable group, a monofunctional radical polymerizable compound having a specific charge transportable group and a non-radical polymerizable compound having a specific charge transportable group.03-07-2013
20110014556CHARGE ACCEPTANCE STABILIZER CONTAINING CHARGE TRANSPORT LAYER - The disclosed embodiments are directed to electrophotographic photoreceptors imaging members. More particularly, the imaging members of this disclosure comprise a charge transport layer comprising a charge transport molecule and a charge stabilizing compound to suppress the effects of corona effluents and provide stabilized charge acceptance during prolonged cycling, thereby improving print quality.01-20-2011
20130059243PHOTORECEPTOR, COATING LIQUID FOR FORMING OUTERMOST LAYER OF PHOTORECEPTOR, AND IMAGE FORMING METHOD AND APPARATUS, AND PROCESS CARTRIDGE USING THE PHOTORECEPTOR - An electrophotographic photoreceptor including an electroconductive substrate; a photosensitive layer located overlying the electroconductive substrate; and an outermost layer located overlying the photosensitive layer, wherein the outermost layer includes filler and a crosslinked resin having a residual group of a polycarboxylic acid compound and a group having the following formula (1):03-07-2013
20130065169ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD OF PRODUCING ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - An electrophotographic photoreceptor includes a conductive substrate; and a photosensitive layer on the conductive substrate, wherein a layer having an outermost surface of the photoreceptor contains a polymer that is formed by polymerizing a crosslinkable charge transport material having an aromatic group and a —CH03-14-2013
20130164662IMAGE HOLDING MEMBER FOR IMAGE FORMING APPARATUS, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An image holding member for an image forming apparatus includes a support and a photosensitive layer disposed on the support and containing a compound represented by following formula (I), wherein R06-27-2013
20130164663IMAGE HOLDING MEMBER FOR IMAGE FORMING APPARATUS, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - Provided is an image holding member for an image forming apparatus including a support; and a photosensitive layer disposed on the support and containing a compound represented by the following formula (I):06-27-2013
20090136858ELECTROPHOTOGRAPHIC TRANSFER PAPER - The present invention is an electrophotographic transfer paper where at least one side of the base paper is given a coating layer with a pigment and an adhesive agent to form coated paper and where the aforementioned adhesive contains a branched poly(meth)acrylamide copolymer having a cationic groups and/or anionic groups and also has a weight average molecular weight of 50,000 to 1,000,000. The electrophotographic transfer paper in the present invention has superior high-speed throughput performance despite low basis weight and a low coating weight, therefore, good for high-speed copy machine and printer properties, especially, when it contained a printability improver in the coating layer, it has a good ink adhesion property and surface strength required in offset printing.05-28-2009
20120231379FLUORINE-CONTAINING RESIN PARTICLE DISPERSION, METHOD FOR PREPARING FLUORINE-CONTAINING RESIN PARTICLE DISPERSION, COATING LIQUID WHICH CONTAINS FLUORINE-CONTAINING RESIN PARTICLES, METHOD FOR PREPARING COATING FILM WHICH CONTAINS FLUORINE-CONTAINING RESIN PARTICLES, COATING FILM WHICH CONTAINS FLUORINE-CONTAINING RESIN PARTICLES, MOLDED BODY, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD FOR PREPARING ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - Provided is a fluorine-containing resin particle dispersion including: fluorine-containing resin particles, a resin which is not dissolved in at least one solvent in a group of hydroxyl group-containing solvents including an alcohol-based solvent having 1 to 10 carbon atoms, containing no aromatic ring in the molecule structure, and a water-based medium, and which is adhered on the surface of the fluorine-containing resin particles, and at least one solvent, in which the resin is not dissolved, in the group of hydroxyl group-containing solvents, in which the fluorine-containing resin particles having the resin adhered on the surface thereof are dispersed.09-13-2012
20120237862CHEMICALLY RESISTIVE AND LUBRICATED OVERCOAT - Embodiments provide novel imaging members used in electrostatography. More particularly, there is provided flexible electrophotographic imaging members which exhibit an extended functional life. These imaging members include an improved protective overcoat layer comprising: (1) a polymer blend of a low surface energy copolymer and a chemically resistive copolymer, (2) a chemically resistive copolymer and a slip agent, and (3) a chemically resistive copolymer and the dispersion of a low surface energy Polyhedral Oligomeric Silsesquioxane (POSS) nanoparticles to effect surface contact friction reduction for enhancing wear resistance and for suppressing copy printout defect caused by chemical attack.09-20-2012
20110300474ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS, AND PROCESS FOR PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - An electrophotographic photosensitive member having a surface layer containing a polymeric product obtained by polymerizing a specific adamantane compound, a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member, and a process for producing the electrophotographic photosensitive member.12-08-2011
20120107735ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member comprises a conductive support, an intermediate layer provided on the conductive support, and a photosensitive layer provided on the intermediate layer, in which at least one of the intermediate layer and the photosensitive layer comprises a compound represented by the following formula (1):05-03-2012
20110300475Electrophotographic Photoconductor and Image-Forming Apparatus - An electrophotographic photoconductor includes a photosensitive layer on a conductive base, in which 1) the photosensitive layer includes a charge-generating layer including a charge-generating material, and a charge-transport layer including a charge-transport material and a binder resin, the charge-generating layer and the charge-transport layer being stacked, in that order, on the conductive base, and the charge-transport layer having a yield strain of about 5%-25%, or 2) the photosensitive layer includes a charge-generating material, a charge-transport material, and a binder resin in the same layer and has a yield strain of about 5%-25%, corresponding to the yield strain measured using a 10 mm×30 mm rectangular, sample having a thickness of 30 μm with both 10-mm sides held at an initial load of 1 N, a strain rate of 0.5 %/min, and a temperature of 30°C., in which the electrophotographic photoconductor is used as an image-bearing member.12-08-2011
20110287351ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor having a photosensitive layer on a conductive support, wherein the photosensitive layer comprises a pigment containing an adduct of titanyl phthalocyanine and 2,3-butanediol, and a ratio of an absorbance at a wavelength of 780 nm of the photosensitive layer (referred to as Abs780) divided by an absorbance at a wavelength of 700 nm of the photosensitive layer (referred to as Abs700) is 0.8 to 1.1, the ratio being referred to as Abs780/Abs700, and Abs780 and Abs700 each being calculated from a relative reflectance spectrum of the electrophotographic photoreceptor, wherein the relative reflectance spectrum is determined using an aluminum conductive support using a reflectance spectrum of the aluminum conductive support as a base line.11-24-2011
20110143273ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention relates to an electrophotographic photosensitive member obtained by providing an intermediate layer and a photosensitive layer on a conductive support in the stated order, the electrophotographic photosensitive member being characterized in that the intermediate layer contains a specific polyolefin resin and a specific organic electron-transporting substance, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member.06-16-2011
20110287350ELECTROPHOTOGRAPHIC APPARATUS AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - An electrophotographic apparatus and an electrophotographic photosensitive member for use in the electrophotographic apparatus are provided. The number of intermediate layers between a photoconductive layer and a surface layer is an odd number more than 2, and the refractive index monotonically decreases from the photoconductive layer toward the surface layer. The refractive index of an odd-numbered intermediate layer is in a predetermined range of the geometrical mean of the refractive indices of the two layers adjacent to the odd-numbered intermediate layer, and the product of the refractive index and the thickness is in a specific range of an odd multiple of λ/4n. The sum of the products of the refractive indices and the thicknesses of one or more intermediate layers disposed between at least two odd-numbered intermediate layers is in a range of −π/2<θ<π/2 in the terms of phases.11-24-2011
20110294053ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE-FORMING APPARATUS, AND ELECTROPHOTOGRAPHIC CARTRIDGE - When an abutting pressure of the cleaning blade on a photoreceptor is increased, a chattering occurs due to the so-called a stick-slip phenomenon that the blade repeatedly undergoes sticking to the outermost surface of the photoreceptor and slipping thereon. As a result, a possibility of noise generation becomes higher and there is a possibility that toner particles might pass through during slipping to cause a cleaning failure, resulting in a streaky image defect. There is also a higher possibility that the so-called a filming phenomenon might occur, in which a component of the toner sticks to the photoreceptor surface by the action of the blade pressure and becomes difficult to remove, so as to lead to persistent image defects. Furthermore, since the photoreceptor is rotated with toners in the state of being strongly pressed thereagainst, the image defects are apt to be caused due to peripheral-direction scratches. An electrophotographic photoreceptor is provided in which the outermost layer of the photoreceptor contains a specific charge-transporting material and a specific binder resin.12-01-2011
20110207038SLIPPERY SURFACE IMAGING MEMBERS - A flexible imaging member comprising a slippery charge transport layer including a novel low surface energy polymer binder and a charge transport compound in the layer. In specific embodiments, the novel low surface energy polymer binder in the charge transport layer is a bisphenol A polycarbonate containing short polysiloxane segments present in the polycarbonate backbone—thus eliminating the light scattering effect to render optical clarity—and the charge transport compound is a diamine hole transporting species. The imaging member does include an anticurl back coating to maintain flatness.08-25-2011
20120189948CHARGE TRANSPORT FILM, ORGANIC ELECTRONIC DEVICE, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - Provided is a charge transport film including an enethiol resin having a charge transporting skeleton, and having a sulfur atom content of from 2.0% by mass to 15% by mass.07-26-2012
20110217641ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND IMAGE FORMING METHOD - Reduced can be interferential streaks produced in a halftone image when using a photoreceptor support (also called a drawn tube) having been subjected to tool bit cutting processing, and provided can be an electrophotographic photoreceptor capable of obtaining high quality in response to the light printing field or the like and an image forming method employing the electrophotographic photoreceptor. Also disclosed is an electrophotographic photoreceptor possessing a cylindrical support and provided thereon, a photosensitive layer, the cylindrical support possessing a processing profile regularly fanned along a central axis, provided on a circumferential surface of the cylindrical support, wherein the processing profile satisfies Formula 1: Formula 1 ΔL≧10 μm, where ΔL, represents a difference between a processing period width and another processing period width in a central axis direction of the cylindrical support in an image region.09-08-2011
20110217640ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE-FORMING APPARATUS - An electrophotographic photoconductor includes a base, an undercoat layer that contains a metal oxide and an electron-accepting material and has a thickness of about 3 μm or more and about 15 μm or less, and a photosensitive layer containing a polymer having a repeating unit represented by general formula (1)09-08-2011
20110195354ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - The present invention provides an electrophotographic photoreceptor including a photosensitive layer on a conductive substrate, an outermost layer of the electrophotographic photoreceptor including a cured film of a composition which includes at least one charge transporting compound (a) having a charge transporting skeleton and at least two structural units represented by R—O—CO—CR′═CH—R″ in the same molecule, and at least one polycarbonate resin; a ratio (I08-11-2011
20090142679CONDUCTIVE MEMBER, PROCESS CARTRIDGE USING THE CONDUCTIVE MEMBER, AND IMAGE FORMING DEVICE USING THE PROCESS CARTRIDGE - A conductive member includes a conductive supporting body, an electrostatic resistance adjusting layer formed on the conductive supporting body, and a space holding member, which is formed on each of both end portions of the electric resistance adjusting layer, has a material different from a material of the electric resistance adjusting layer, and constantly maintains a space between the electric resistance adjusting layer and the image carrier, wherein the electric resistance adjusting layer comprises a resin composition including thermoplastic resin containing at least polyamide elastomer and polyolefin block polymer and plural types of salt containing at least one type of salt selected from perchlorate and at least one type of salt selected from fluorine-containing organic anion salt.06-04-2009
20110200924ELECTROPHOTOGRAPHIC PHOTORECEPTOR, AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE USING THE PHOTORECEPTOR - An electrophotographic photoreceptor, including an electroconductive substrate; a photosensitive layer; a crosslinked surface layer comprising α-alumina and tin oxide, wherein a first one-dimensional data array obtained from measuring a concavo-convex shape of the surface of the photoreceptor is subjected to a wavelet conversion to be separated into 6 frequency components, the one-dimensional data array of the lowest frequency component is further thinned so as to have 1/40 data arrays to obtain a second one-dimensional data array, the second one-dimensional data array is further subjected to the wavelet conversion to be separated into additional 6 frequency components, and wherein when relationships between respective arithmetic average roughness (WRa) (y-axis) of the 12 frequency components and the frequency components (x-axis) are graphed, at least WRa (214 to 551 μm) and WRa (26 to 106 μm) have a folding point or a maximum point.08-18-2011
20110200925IMAGE BEARING MEMBER, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - An image bearing member including an electroconductive substrate, and a photosensitive layer provided overlying the electroconductive substrate, the photosensitive layer containing at least one charge transport materials selected from the group consisting of a naphthalene tetracarboxylic acid diimide-isoindol derivative represented by the following chemical structure 1, a naphthalimide-isoindol derivative represented by the following chemical structure 2, and a triphenyl amine-isoindol derivative represented by the following chemical structure 3,08-18-2011
20110171570ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD OF PRODUCING SAME, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - The invention provides an electrophotographic photoreceptor having at least: a substrate; a photosensitive layer provided on the substrate; and an overcoat layer provided on the photosensitive layer. The overcoat layer of the photoreceptor includes at least: a cross-linked component that is obtained by cross-linking of at least one selected from a guanamine compound or a melamine compound and a charge-transporting material having at least one substituent group selected from —OH, —OCH07-14-2011
20110207039ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, CURED FILM, AND ORGANIC ELECTROLUMINESCENT DEVICE - An electrophotographic photoreceptor is disclosed, in which an outermost surface layer of the electrophotographic photoreceptor is made of a cured film of a composition including a compound represented by the following Formula (M1) and a charge transporting material having a chain polymerizable functional group:08-25-2011
20110207040IMAGE HOLDING MEMBER FOR IMAGE FORMING APPARATUS, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An image holding member for an image forming apparatus includes: a substrate; and a photosensitive layer on the substrate, the photosensitive layer containing a compound including a partial structure represented by the following Formula (II-2)08-25-2011
20120094223IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE - An image forming apparatus includes an electrophotographic photoconductor that includes an outermost surface layer containing a binder resin having a structural unit represented by general formula (A) below and a charge transporting material having a butadiene trimer structure in a single molecule, a charging unit that charges the electrophotographic photoconductor, an electrostatic latent image forming unit that forms an electrostatic latent image, a toner image forming unit that forms a toner image, and a transfer unit that transfers the toner image formed on the electrophotographic photoconductor onto a transfer-receiving body,04-19-2012
20100297543 INTERFACIAL LAYER AND COATING SOLUTION FOR FORMING THE SAME - The present embodiments are generally directed to an improved imaging member exhibiting various advantages over conventional imaging members. More specifically, the present embodiments are directed to an improved interfacial layer formed from an aqueous-based coating solution which exhibits improved formation and coating properties, such as increased homogeneity and adhesion, and methods for making the same. The aqueous-based coating solution is environment-friendly and avoids the need to use more expensive organic solvents which involve higher safety risks in the manufacturing process.11-25-2010
20110229810ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrophotographic photoconductor includes a base, a photosensitive layer formed on the base, and an overcoat layer formed on the photosensitive layer, wherein the overcoat layer includes gallium, oxygen, and hydrogen, and the intensity ratio (I09-22-2011
20110229808CURL-FREE IMAGING MEMBERS WITH A SLIPPERY SURFACE - Present embodiments are directed to the improvement of flexible imaging members used in electrophotography. More particularly, embodiments pertain to a structurally simplified curl-free flexible electrophotographic imaging member without the need for an anticurl back coating, having a functionally improved top outermost exposed slippery imaging layer which furthers extends service life, and provides a process for making and using the member.09-22-2011
20110229809IMAGE FORMING APPARATUS, AND PROCESSING CARTRIDGE - The present invention provides an image forming apparatus including: an electrophotographic photoreceptor; a charging unit; an electrostatic latent image forming unit that forms an electrostatic latent image; a developing unit that develops the electrostatic latent image formed at the electrophotographic photoreceptor by a developer to form a toner image, the developing unit storing the developer containing a toner having toner particles containing a crystalline resin and having a shape factor SF1 of from 100 to 150, a volume average particle diameter of from 3 to 6 μm, and fluorocarbon-based resin particles as an external additive; a transfer unit; and a cleaning unit that cleans the surface of the electrophotographic photoreceptor with a blade containing urethane rubber, the blade disposed applying a pressure to the electrophotographic photoreceptor surface of 0.20 mN/mm or more.09-22-2011
20090239165IMAGE FORMING APPARATUS USING AMORPHOUS SILICON PHOTOCONDUCTOR - An image forming apparatus is provided with an image forming unit including an amorphous silicon photoconductor. The amorphous silicon photoconductor includes a base and a photosensitive layer provided on the base. The photosensitive layer includes a highly resistive layer, a charge-injection inhibition layer, a photoconductive layer and a surface protecting layer successively laminated on the base. The thickness of the highly resistive layer is in the range of 1 μm to 4 μm. The thickness of the photosensitive layer is in the range of 15 μm to 25 μm and the absolute value of a solid light potential of the photosensitive layer is in the range of 20 to 100 V.09-24-2009
20120196213METHOD FOR PRODUCING PHOTORECEPTOR AND PROCESS CARTRIDGE AND IMAGE-FORMING APPARATUS INCLUDING PHOTORECEPTOR - A method for producing a photoreceptor includes forming at least a photosensitive layer as a coating layer on a surface of a substantially cylindrical photoreceptor; and polishing a surface of the coating layer formed on the photoreceptor in the layer formation by rotating the photoreceptor and moving a polishing member in a direction crossing a circumferential direction of the photoreceptor in contact with the surface of the coating layer on the photoreceptor.08-02-2012
20130122409ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - An electrophotographic photoconductor including: an electrically conductive substrate; and at least a photoconductive layer on the electrically conductive substrate, wherein the electrophotographic photoconductor includes an uppermost surface layer, and the uppermost surface layer includes an inorganic filler, an acidic disperser and a three-dimensionally crosslinked polymer, wherein the three-dimensionally crosslinked polymer is formed through polymerization among compounds each containing a charge transporting compound and three or more [(tetrahydro-05-16-2013
20110104600ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR AND IMAGE FORMING APPARATUS USING THE SAME - A function separation type electrophotographic photoconductor comprising: a conductive support; an undercoat layer formed on the conductive support; a charge generation layer formed on the undercoat layer; and a charge transfer layer formed on the charge generation layer, the undercoat layer containing at least a binder resin and metal oxide microparticles subjected to surface treatment with anhydrous silicon dioxide, the charge transfer layer containing at least a binder resin and an enamine compound represented by the following general formula (1):05-05-2011
20100151366ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - According to an aspect of the invention, an electrophotographic photoreceptor including a conductive substrate and a photosensitive layer provided on a surface of the conductive substrate is provided. In the electrophotographic photoreceptor, an outermost layer of the photosensitive layer containing a crosslinked product formed from at least one charge transporting material having at least one substituent selected from the group consisting of —OH, —OCH06-17-2010
20110059393IMAGE BEARING MEMBER, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - An image bearing member including an electroconductive substrate, a photosensitive layer overlying the electroconductive substrate, and a protection layer overlying the photosensitive layer, the photosensitive layer containing a diamine compound represented by the chemical structure 1, more of the diamine compound being disposed on the photosensitive layer side than the surface side relative to the midpoint in a depth direction of the protection layer:03-10-2011
20120196214ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - Provided is an electrophotographic photoreceptor including a substrate and an outermost layer containing a cured film of a composition containing a compound having a chain polymerizable functional group and a charge transporting skeleton in the same molecule, and at least one chain transfer agent selected from a compound having 4 or more primary thiol groups and a compound having 2 or more secondary thiol groups.08-02-2012
20120196215THIOL GROUP-CONTAINING CHARGE TRANSPORTING MATERIAL, THIOL GROUP-CONTAINING CHARGE TRANSPORTING MATERIAL-DISSOLVING SOLUTION, PHOTOELECTRIC CONVERSION DEVICE, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - Provided is a thiol group-containing charge transporting material represented by the following general formula (1):08-02-2012
20110111334LIGHT SHOCK RESISTANT OVERCOAT LAYER - Embodiments pertain to a novel imaging member, namely, an imaging member or photoreceptor comprising an overcoat layer which comprises light-absorbing material that improves print quality. The light-absorbing material reduces the intrinsic light shock suffered by conventional overcoat layers without negatively impacting electrical properties of the overcoat layer.05-12-2011
20110117484ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member includes a photoconductive layer, an intermediate layer, and a surface layer. When Si+C atom density in the surface layer is represented by D05-19-2011
20130137021ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD OF PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member has a surface layer that contains a polymer produced by the polymerization of a charge transporting substance having two or more methacryloyloxy groups per molecule. The surface layer contains a quinone derivative at a concentration of 5 ppm or more and 1500 ppm or less of the total mass of the polymer. The quinone derivative is a compound represented by the following formula (1) or a compound represented by the following formula (2) or both.05-30-2013
20130137023ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - In order to provide an electrophotographic photosensitive member with which a ghost is suppressed even under a low temperature and low humidity environment, and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member, the electrophotographic photosensitive member has a support, an undercoat layer formed on the support, and a photosensitive layer formed on the undercoat layer and comprising a charge generating material and a hole transporting material, wherein the undercoat layer comprises a particular amine compound.05-30-2013
20130137024ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD OF PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - In an electrophotographic photosensitive member having a surface layer containing a polymer obtainable by polymerization of a compound having a chain-polymerizable functional group, the compound having a chain-polymerizable functional group includes a compound represented by formula (1).05-30-2013
20100330473ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - The invention provides an electrophotographic photoreceptor having a surface protection layer that satisfies the following requirements: (1) including a crosslinked substance of at least one selected from a guanamine compound or a melamine compound, and at least one charge transporting material having at least one substituent selected from —OH, —OCH12-30-2010
20110014557PHOTORECEPTOR OUTER LAYER - The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. Embodiments pertain to an improved electrophotographic imaging member incorporating an outer layer having a nano- to micron-scale pattern imprinted into its surface to lower friction with the cleaning blade and improve print quality and performance. Embodiments also pertain to methods for making the improved imaging member.01-20-2011
20100248100ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE-FORMING DEVICE, AND PROCESS CARTRIDGE - An electrophotographic photoreceptor includes a conductive support and, on the conductive support, at least a photosensitive layer, the electrophotographic photoreceptor comprising a surface layer that may be the same as or different from the photosensitive layer and that includes fluororesin particles and a fluorinated alkyl group-containing copolymer containing a repeating unit represented by the following Structural Formula A, and the content of quaternary ammonium salt in the surface layer being 50 ppm or less, wherein, in Structural Formula A, l represents a positive number of 1 or more; p represents 0 or a positive number of 1 or more; t represents a positive number of from 1 to 7; R09-30-2010
20110045391ORGANIC PHOTORECEPTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - An organic photoreceptor, comprises: a conductive support; a photosensitive layer provided on the conductive support; and a protective layer provided on the photosensitive layer, wherein the protective layer contains alumina particles which contain 2 to 50 ppm of phosphorus atoms and is subjected to a surface treatment with a compound A having a reactive functional group and a curable compound B, and the protective layer is a cured layer including a cured product material formed by at least the compound A on the surfaces of the alumina particles and the curable compound B.02-24-2011
20090053633P-TERPHENYL COMPOUND MIXTURE AND ELECTROPHOTOGRAPHIC PHOTORECEPTORS MADE BY USING THE SAME - An object of the invention is to provide: a p-terphenyl compound mixture useful as a charge-transporting agent which has improved solubility in organic solvents to thereby diminish a cracking phenomenon, which poses problems concerning photoreceptor characteristics, and can realize an electrophotographic photoreceptor having high sensitivity and high durability; and an electrophotographic photoreceptor employing the compound mixture. The invention relates to: a p-terphenyl compound mixture which includes two symmetric p-terphenyl compounds respectively represented by the following general formula (1) and general formula (2) and an asymmetric p-terphenyl compound represented by the following general formula (3) which has both a group of substituents of the compound represented by general formula (1) and a group of substituents of the compound represented by general formula (2); and an electrophotographic photoreceptor containing the compound mixture.02-26-2009
20100015538ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING APPARATUS USING THE SAME, AND PROCESS CARTRIDGE - The present invention provides an electrophotographic photoconductor which includes at least a photosensitive layer and a surface protective layer over a support, wherein the surface protective layer contains a filler, a charge transporting material and a specific compound; and the photosensitive layer contains at least a charge transporting material; the charge transporting material contained in the photosensitive layer has an oxidation potential lower than the oxidation potential of the charge transporting material contained in the surface protective layer and is a specific compound.01-21-2010
20110129768ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD FOR PRODUCING THE SAME, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - According to aspects of the present invention, an electrophotographic photosensitive member includes a surface layer comprising a cured resin obtained by polymerizing a compound having at least one polymerizable functional group. Aspects of the present invention provide an electrophotographic photosensitive member whose surface layer comprises a compound (urea derivative) having a certain structure, a method for producing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus including the electrophotographic photosensitive member.06-02-2011
20110086299LIGHT SHOCK RESISTANT PROTECTIVE LAYER - Embodiments pertain to a novel imaging member, namely, an imaging member or photoreceptor comprising a removable protective outer layer which comprises light-absorbing material which substantially prevents any light absorption by the overcoat layer. Thus, the light-absorbing material reduces the intrinsic light shock suffered by conventional overcoat layers without negatively impacting electrical properties of the overcoat layer while improving print quality.04-14-2011
20110086300PHOTORECEPTOR SURFACE LAYER COMPRISING SECONDARY ELECTRON EMITTING MATERIAL - Presently disclosed embodiments relate to an improved electrophotographic imaging member or photoreceptor comprising a surface layer on the photoreceptor, where the surface layer comprises secondary electron emitting materials that act as a robust electrically active layer. Photoreceptors incorporating such materials into or on the surface will exhibit an increase photoreceptor life and also a reduction the operating voltage of bias charge roll (BCR) charging systems while maintaining excellent charge uniformity.04-14-2011
20090214967ELECTROPHOTOGRAPHIC PHOTORECEPTOR, AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE USING THE SAME - The present invention provides an electrophotographic photoreceptor having at least a photosensitive layer and a surface layer provided at a surface of the photosensitive layer The surface layer contains a first layer which is provided at the photosensitive layer side and has a refractive index of n08-27-2009
20110076602ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR AND IMAGE FORMING APPARATUS INCLUDING THE SAME - An electrophotographic photoconductor that is usable in an exposure light source having a wavelength of 405±20 nm, the electrophotographic photoconductor comprising a photosensitive layer including a charge generation layer and a charge transfer layer stacked in order on a conductive substrate, 03-31-2011
20110070536OXIDE MATERIAL, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING DEVICE - An oxide material including gallium, zinc and oxygen, a ratio of the number of atoms of zinc to the number of atoms of gallium (number of atoms of zinc/number of atoms of gallium) being from about 0.01 to about 0.6 and a ratio of the number of atoms of oxygen to the sum of the number of atoms of gallium and the number of atoms of zinc (number of atoms of oxygen/(number of atoms of gallium+number of atoms of zinc)) being from about 1.0 to about 1.6, is disclosed. An electrophotographic photoreceptor including a layer which includes the oxide material is also disclosed. An electrophotographic photoreceptor including a substrate; and a photosensitive layer including gallium, oxygen and zinc is also disclosed.03-24-2011
20110076603ORGANIC PHOTORECEPTOR, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE - An object of the invention is to provide an image forming apparatus and process cartridge both employing the organic photoreceptor by improving an abrasion resistance of the organic photoreceptor up to the same level as an amorphous silicone photoreceptor, the image blur and image flow problem liable to generate in high temperature and high moisture condition, and to provide an organic photoreceptor capable of obtaining a precise and a high quality dot image by short wavelength laser exposure. Provided is an organic photoreceptor having a conductive substrate, provided thereon at least a photo receiving layer and a protective layer in this order, wherein the protective layer comprises at least a resin layer obtained by a reaction between a chain polymerizable compound having a charge transportable structure represented by Formula (1) and a chain polymerizable compound without having a charge transportable structure.03-31-2011
20110070537ELECTROPHOTOGRAPHIC PHOTORECEPTOR - An image forming method employing a photoreceptor and a polymerization toner, wherein the photoreceptor comprises a photosensitive layer provided on a surface of a cylindrical electroconductive substrate, a surface of the photoreceptor has a shape composed of plural lower portions and plural higher portions, a surface roughness of a top surface of the higher portions is 0.01 to 0.5 μm, and a volume based median particle diameter of the polymerization toner is 3 to 8 μm.03-24-2011
20110151364ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS - Provided is an electrophotographic photoreceptor exhibiting not only excellent durability together with high sensitivity but also excellent image reproduction, which is suitable for an image forming method by which imagewise exposure is performed employing a light source having an emission wavelength peak being in the range of 350-500 nm to form a high density electrostatic latent image on a photoreceptor, and also provided are an image forming method employing the electrophotographic photoreceptor, and an image forming apparatus thereof. Also disclosed is an electrophotographic photoreceptor possessing a conductive support and provided thereon, a charge generation layer and a charge transport layer, wherein the charge generation layer possesses a pyranthrone pigment, and the charge transport layer possesses at least one of compounds represented by Formula (1) or Formula (2) described below:06-23-2011
20100310976PHOTOCONDUCTIVE DEVICE, AND TERAHERTZ WAVE GENERATION AND DETECTION APPARATUSES EACH USING THE PHOTOCONDUCTIVE DEVICE - A photoconductive device includes: a photoconductive layer configured to generate carriers upon irradiation with excitation light, a first electrode arranged on the photoconductive layer, a second electrode arranged on the photoconductive layer with a gap between the first and second electrodes, and a third electrode arranged in a region over which an electric field caused by voltages applied to the first and second electrodes or an electric field caused by irradiation with a terahertz wave extends. A depletion layer of the photoconductive layer is controllable by a voltage applied to the third electrode.12-09-2010
20100297544FLEXIBLE IMAGING MEMBERS HAVING A PLASTICIZED IMAGING LAYER - The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structural simplification, and material reformulation for making and using the same. More particularly, the embodiments pertain to the incorporation of a plasticizer into the charge transport layer such that an anticurl back coating is no longer needed for reduction or elimination of the layered photoreceptor curling.11-25-2010
20110151363UNDERCOAT LAYER AND IMAGING MEMBERS COMPRISING SAME - Disclosed are undercoat layers comprising a metal oxide, a polymer, and a citrate of Formula (I):06-23-2011
20090317733Quinone Compound, Electrophotographic Photoconductor and Electrophotographic Apparatus - Disclosed is a compound having excellent electron transporting ability, which is useful for electrophotographic photosensitive bodies or organic EL devices. Specifically disclosed is a novel quinone compound having a structure represented by general formula (I). Also disclosed is a highly sensitive, positive charge type electrophotographic photosensitive body for copying machines and printers, wherein the novel organic material is used as a charge-transporting material in a photosensitive layer. Also specifically disclosed is an electrophotographic photosensitive body having a photosensitive layer formed on a conductive base and containing a charge-generating material and a charge-transporting material, wherein the photosensitive layer contains at least one of the above-described compounds. Further disclosed is an electrophotographic apparatus using such a positive charge type electrophotographic photosensitive body.12-24-2009
20120202146ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - Provided is an electrophotographic photoreceptor including: a functional layer containing: a polymer of a first compound having a chain polymerizable functional group and a charge transporting skeleton in one molecule, and at least one second compound selected from a compound including at least one kind of the repeating unit represented by formula (AA) and having a weight average molecular weight of 10000 or less, a compound including at least one kind of the repeating unit represented by formula (BB) and having a weight average molecular weight of 10000 or less, a phthalic ester, a trimellitic ester, a fatty acid ester, a polyhydric alcohol ester, and a polyhydric alcohol ether.08-09-2012
20110020740IMAGE FORMING APPARATUS - An image forming apparatus including a latent image bearing member, a charging device, a latent electrostatic image formation device, a development device, a transfer device, and a lubricant supplying device, the latent image bearing member satisfying (I), (II) and (III):01-27-2011
20110020739ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND IMAGE FORMING APPARATUS INCLUDING THE SAME - A photoreceptor comprising an undercoat layer between a conductive support and a photosensitive layer, wherein the undercoat layer contains at least metal oxide microparticles coated with anhydrous silicon dioxide and a first binder resin, the photosensitive layer is a monolayered photosensitive layer containing at least a charge generation material and a charge transport material or a multilayered photosensitive layer formed of a charge generation layer containing a charge generation material and a charge transport layer containing a charge transport material stacked in this order or in an inverse order, and the charge generation material contains a crystal type oxotitanylphthalocyanine having peaks in an X-ray diffraction spectrum with Cu—Kα characteristic X-rays (0.15418 nm) at Bragg angles (2θ±0.2°) of 7.3°, 9.4°, 9.6°, 11.6°, 13.3°, 17.9°, 24.1° and 27.2°, in which a peak bundle formed by overlapping the peaks at 9.4° and 9.6° is a largest peak, and the peak at 27.2° is a second largest peak; and an X-type metal-free phthalocyanine having peaks in the X-ray diffraction spectrum at Bragg angles (2θ±0.2°) of 7.5°, 9.1°, 16.7°, 17.3° and 22.3°.01-27-2011
20110053064OVERCOAT LAYER COMPRISING CORE-SHELL FLUORINATED PARTICLES - The presently disclosed embodiments are directed generally to an improved electrophotographic imaging member in which the overcoat layer incorporates core-shell fluorinated nano- or micro-particles encapsulated in a melamine shell to reduce torque and cleaning failures during the photoreceptor cleaning process.03-03-2011
20110256474IMAGING MEMBERS HAVING STRESS/STRAIN FREE LAYERS - The presently disclosed embodiments relate in general to electrostatography comprising improved features in the flexible imaging member that enhance function when used in the electrostatographic imaging system. These embodiments pertain, more particularly, to a structurally simplified curl-free flexible electrostatographic imaging member belt containing a stress/strain free ground strip layer and stress/strain free imaging layer(s) to improve dynamic belt cyclic motion quality and extend service life.10-20-2011
20100255413IMAGING MEMBER - An imaging member is disclosed having a surface layer comprising a heat-sensitive material whose surface compatibility to printing agents, such as toners and inks, can be substantially reversed in response to small changes in temperature. The imaging member is suitable for use in lithographic and printing applications, permitting reversible switching between compatibility states of printing agents, such as between hydrophilic and hydrophobic states or oleophilic and oleophobic states, and enabling rapid production of images on a recording medium. The heat-sensitive material comprises an acrylamide polymer and a silicon material.10-07-2010
20100330474ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC PHOTORECEPTOR CARTRIDGE, AND IMAGE-FORMING APPARATUS - Subjects for the invention are: to provide an electrophotographic photoreceptor which has excellent electrical characteristics and which, even when repeatedly used over long, can stably form high-quality satisfactory images having high resolution; and to provide an electrophotographic photoreceptor cartridge and an image-forming apparatus each employing the electrophotographic photoreceptor. The invention provides an electrophotographic photoreceptor for use in an image-forming apparatus comprising a charging unit which charges an electrophotographic photoreceptor, an exposure unit which exposes the charged electrophotographic photoreceptor to light to form an electrostatic latent image on the electrophotographic photoreceptor, and a developing unit which develops the electrostatic latent image, wherein the electrophotographic photoreceptor comprises a conductive substrate and a photosensitive layer and the photosensitive layer contains a compound represented by the following formula (1). The photoreceptor is further characterized in that the exposure unit has an LED, or that the electrostatic latent image has a resolution of 1,200 dpi or higher, or that the electrostatic latent image is developed with a toner and the toner has an average degree of circularity as determined with a flow type particle image analyzer of 0.94-1.00, or that the image-forming apparatus is of the full-color tandem type. The invention further provides an electrophotographic photoreceptor cartridge and an image-forming apparatus each employing the electrophotographic photoreceptor.12-30-2010
20100330475IMAGE FORMING APPARATUS, PROCESS CARTRIDGE, AND IMAGE BEARING MEMBER - An image forming apparatus including an image bearing member having an electroconductive substrate on which are provided at least a photosensitive layer and a protection layer, in that sequence, a charging device that charges the surface of the image bearing member to form a latent electrostatic image thereon, a development device that develops the latent electrostatic image with a development agent containing toner to obtain a developed toner image, a cleaning device that removes toner remaining on the surface of the image bearing member and a lubricant material applicator that applies a lubricant material to the surface of the image bearing member, the protection layer containing a cured resin and a filler and the surface form of the protection layer having an arithmetical mean waviness Wa of from 0.05 to 0.3 μm and an average length WSm of profile elements of from 0.5 to 1.5 mm, which are obtained from a waviness profile obtained by filtering a coarse component with a λc profile filter of 0.25 mm and filtering a wavelength component longer than a waviness with a λf profile filter of 2.5 mm.12-30-2010
20100330472ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE - There is provided an electrophotographic photoreceptor including a conductive substrate; an intermediate layer; a photosensitive layer; and a surface layer, in this order, the surface layer including two or more charge transporting materials each including a reactive substituent and respectively having mutually different ionization potentials, in an amount of 90% by weight or more relative to the total solid content of the surface layer, and the content ratio X of each of the two or more charge transporting materials satisfying the following Formula (1). X(n) represents a content ratio (weight %) of a charge transporting material that has the n12-30-2010
20110136050ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR AND IMAGE FORMING APPARATUS INCLUDING THE SAME - An electrophotographic photoconductor that is exposed by an exposure light source having a wavelength of 405±20 nm, the electrophotographic photoconductor comprising: 06-09-2011
20110136049IMAGING MEMBERS COMPRISING FLUOROKETONE - Improved electrophotographic imaging members which pertain to the incorporation of a fluoroketone into the charge transport layer to achieve a structurally simplified flexible electrophotographic imaging member that remains flat without the need for an anticurl back coating layer. The imaging member is both more slippery and has a reduced coefficient of friction, thus extending service life.06-09-2011
20100196810ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor, includes: a conductive support; and a photosensitive layer provided on or above the conductive support, the photosensitive layer including an outermost surface layer at the farthest location from the conductive support, wherein the outermost surface layer contains: coated insulating inorganic particles obtained by subjecting insulating inorganic particles having a specific surface area of not more than about 300 m08-05-2010
20120034555ANTI-STATIC AND SLIPPERY ANTI-CURL BACK COATING - The presently disclosed embodiments relate generally to the formulation of an anticurl back coating layer that renders imaging apparatus flexible members and components their desirable flatness, for use in electrostatographic, including digital apparatuses. More particularly, the embodiments pertain to an imaging member comprising an anticurl back coating layer formulated to comprise a polymer blend of an anti-static polymer and a low surface energy A-B diblock copolymer polymer and an adhesion promoter. The embodiments provide an imaging member belt with the anticurl back coating that is electrically conductive and also substantially reduces its surface contact friction to help suppress/eliminate tribo-electrical charge build-up at the backside of the imaging member belt under normal machine imaging member belt operational conditions in the field.02-09-2012
20110117483ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - Aspects of the present invention provide an electrophotographic photosensitive member in which an intermediate layer contains metal oxide particles, an organic resin, and a specific compound (fluorenone derivative), and a process cartridge and an electrophotographic apparatus including the electrophotographic photosensitive member.05-19-2011
20110305981IMAGING MEMBERS HAVING IMPROVED IMAGING LAYERS - The presently disclosed embodiments are directed to imaging members used in electrostatography. More particularly, the embodiments pertain to electrophotographic imaging members which have imaging layer(s) formulated to comprise of a novel A-B diblock copolymer binder consisting of two segmental blocks of a bisphenol polycarbonate and a phthalic acid which provides chemical vapor contaminant resistive property. The present embodiments provide superior copy printout quality.12-15-2011
20080292979TRANSPARENT CONDUCTIVE MATERIALS AND COATINGS, METHODS OF PRODUCTION AND USES THEREOF - Transparent conductive materials, articles and films are described herein a) that are easily and efficiently produced, b) can be produced prior to application or in situ, c) are easily applied to surfaces and substrates or formed into articles, d) can be produced and used with materials and methods that are generally accepted by the flat panel display (FPD) industry, along with other industries that produce and utilize microelectronics, e) can be tailored to be photoimageable and patternable using accepted photolithography techniques, f) have superior optical properties and have superior film forming properties, including better adhesion to other adjacent layers, the ability to be laid down in very or ultra thin layers and the ability to remain transparent when laid down as thicker layers. Methods of producing and using these transparent conductive materials are also disclosed.11-27-2008
20110045390ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member having a support and a photosensitive layer formed on the support, wherein the photosensitive layer contains a boron complex which is a product of the reaction of a compound having a phenolic hydroxyl group and a carbonyl group with a boron halide. Also disclosed are a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member.02-24-2011
20120040283IMAGING MEMBERS FOR INK-BASED DIGITAL PRINTING COMPRISING STRUCTURED ORGANIC FILMS - An imaging member for ink-based digital printing having an outermost layer including a structured organic film (SOF) having a plurality of segments and a plurality of linkers arranged as a covalent organic framework, wherein the structured organic film may be multi-segment thick.02-16-2012
20120040282IMAGING DEVICES COMPRISING STRUCTURED ORGANIC FILMS - An imaging member for a xerographic liquid immersion development machine having an outermost layer including a solvent resistant structured organic film (SOF) having a plurality of segments and a plurality of linkers arranged as a covalent organic framework, wherein the structured organic film may be multi-segment thick.02-16-2012
20110318678ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member is configured such that the average value Hx_ave of the content of hydrogen atoms in a central portion area of a photoconductive layer in a cylindrically axial direction thereof, the content Hx of the hydrogen atoms at an arbitrary point in the central portion area, the average value Hy_ave of the content of the hydrogen atoms in an end area of the photoconductive layer in the cylindrically axial direction thereof, and the content Hy of the hydrogen atoms at an arbitrary point in the end area satisfy 10≦Hx_ave≦30, Hx12-29-2011
20110318677ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrophotographic photoconductor includes a conductive substrate and an outermost surface layer formed on the conductive substrate and containing a binder resin and a copolymer derived from a reactive monomer having charge transport property and a reactive monomer having no charge transport property, the copolymer having a side chain with 4 or more carbon atoms in a constitutional unit derived from the reactive monomer having no charge transport property.12-29-2011
20110318675IMAGING MEMBERS HAVING AN ENHANCED CHARGE BLOCKING LAYER - The presently disclosed embodiments are directed to layer(s) that are useful in imaging apparatus members and components, for use in electrophotography, including digital, apparatuses. More particularly, the present embodiments provide the negatively charged electrophotographic imaging members with a novel cross-linked charge blocking undercoat layer, which is created to comprise of a binary composition of melamine and formaldehyde or a triple composition consisting of a hydroxyl functional acrylic polyol binder and a methylolation of melamine-formaldehyde, and methods for making the same. The charge blocking layer provides stabilized cyclic photo-electrical properties, enhanced mechanical adhesion bonding, and improved copy print out quality for service life extension.12-29-2011
20110318676ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, METHOD FOR PREPARING THE SAME, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrophotographic photoconductor includes a conductive substrate and an outermost surface layer on the conductive substrate. The outermost surface layer contains a copolymer (a) derived from a reactive monomer having charge transport property and a reactive monomer having no charge transport property, and a polymer prepared by polymerizing, in the presence of the copolymer (a), a reactive monomer (b) that has a solubility parameter (SP value) different from a solubility parameter (SP value) of the reactive monomer having no charge transport property by about 2 (cal/cm12-29-2011
20120045715SLIPPERY AND CONDUCTIVITY ENHANCED ANTICURL BACK COATING - The presently disclosed embodiments relate generally to the formulation of an anticurl back coating layer that renders imaging apparatus flexible members and components their desirable flatness, for use in electrostatographic, including digital apparatuses. More particularly, the embodiments pertain to an imaging member comprising an anticurl back coating layer formulated to comprise conductive carbon nanotubes dispersion in a polymer blend comprising three film-forming thermoplastic polymers to: (a) render electrical conductivity effect for tribo-electrical charge elimination (b) impart static dissipation capability, and (c) provide surface energy lowering effect for contact friction reduction to ease imaging member belt drive as well as cutting tribo-electrical charge build-up under normal imaging member belt operational conditions in the field.02-23-2012
20120003576ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - The charge generation layer of an electrophotographic photosensitive member is made to contain a specific amine compound in order to provide an electrophotographic photosensitive member that can output images that are practically free from an image flaw or have less image flaws attributable to a ghost phenomenon under low temperature and low humidity environment and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member.01-05-2012
20120003575IMAGING MEMBERS HAVING A CHEMICAL RESISTIVE OVERCOAT LAYER - The presently disclosed embodiments are directed to imaging members used in electrostatography. More particularly, the embodiments pertain to electrophotographic imaging members which have an added-on protective overcoat layer formulated to comprise of a novel A-B diblock copolymer comprising two segmental blocks of a bisphenol polycarbonate and an organic acid terminal which provides chemical vapor contaminant resistive property. The overcoat layer may further be formulated to include small quantity of charge transport compound. The present embodiments provide superior copy printout quality.01-05-2012
20120003574ELECTROPHOTOGRAPHY PHOTORECEPTOR, METHOD OF MANUFACTURING THE SAME, AND ELECTROPHOTOGRAPHY DEVICE USING THE SAME - A positive-charging electrophotography photoreceptor includes a laminated structure having a conductive supporting member, a charge transport layer formed of at least a hole transport material and a first binder resin, and a charge generation layer formed of at least a charge generation material, hole transport material, electron transport material, and second binder resin. The charge transport layer is disposed between the conductive supporting member and the charge generation layer. The content of the charge generation material in the charge generation layer is in a range exceeding 0.7 wt % and less than 3.0 wt % of the charge generation layer.01-05-2012
20120009513ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - To provide an electrophotographic photoconductor, containing: a conductive support; a photosensitive layer provided above the conductive support; and a hardened protective layer provided above the photosensitive layer, wherein the hardened protective layer contains a hardened product of a radical polymerizable compound containing an adamantane skeleton.01-12-2012
20120115076ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD FOR PRODUCING THE SAME, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - A charge generating layer of an electrophotographic photosensitive member contains a charge generating substance, polyvinyl acetal, and a fluorenone derivative.05-10-2012
20100124712IMAGE FORMING APPARATUS - The image forming apparatus includes a photoreceptor bearing an electrostatic image; a developing device developing the electrostatic image with a developer including a toner to form a toner image on the photoreceptor; a transferring device transferring the toner image onto a receiving material; and a cleaning device having a cleaning blade cleaning the surface of the photoreceptor. The photoreceptor includes an electroconductive substrate, a photosensitive layer and an outermost layer having projected portions thereon. The outermost layer and projected portions include the same crosslinked charge transport material. The outermost layer has a surface roughness property such that the number of projected portions having height greater than Rz/2 is from 40 to 90 in a length of 12 mm, wherein Rz represents ten-point mean roughness of the outermost layer. The tip of the cleaning blade is contacted with the photoreceptor at a linear pressure of from 80 g/cm to 150 g/cm.05-20-2010
20120058422PHOTORECEPTOR FOR ELECTROPHOTOGRAPHY, PROCESS FOR PRODUCING THE SAME, AND ELECTROPHOTOGRAPHIC APPARATUS - Provided is a photoreceptor for electrophotography, a process for producing the photoreceptor, and an electrophotographic apparatus that includes the photoreceptor. The photoreceptor has a photosensitive layer which contains a resin binder that is a copolymerized polyallylate resin. An electrophotographic apparatus having a photoreceptor drum that includes this photoreceptor has a reduced surface frictional resistance throughout the printing period from the beginning to after printing, thus reducing the amount of surface wear while producing satisfactory images.03-08-2012
20120156600ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR AND IMAGE FORMING APPARATUS USING THE SAME - An electrophotographic photoconductor comprising a charge generation layer containing a charge generation material and a charge transfer layer containing a charge transfer material laminating in this order on a conductive support with an undercoat layer interposed between the charge generation layer and the conductive support, or comprising a monolayer type photosensitive layer containing a charge generation material and a charge transport material being formed on a conductive support with an undercoat layer interposed between the monolayer type photosensitive layer and the conductive support, wherein 06-21-2012
20120156599ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR AND IMAGE FORMING APPARATUS INCLUDING THE SAME - An electrophotographic photoconductor, comprising:06-21-2012
20120064442ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD FOR PRODUCING ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - An electrophotographic photoreceptor is provided, which includes: a substrate; a photosensitive layer; and a surface protective layer, in this order, in which the protective layer contains a crosslinked product of a curable charge transporting material in a content of from about 90 to 98% by weight, and fluorinated resin particles in a content of from about 2 to 10% by weight, and the protective layer satisfies Formula (1): 0.5≦b/a≦1, wherein, “a” represents a ratio of fluorine atoms to the sum of carbon atoms, oxygen atoms, and fluorine atoms present in a region of the protective layer ranging from the photosensitive layer side surface thereof to a point corresponding to about ⅔ of the thickness thereof, and “b” represents the ratio in a region of the protective layer ranging from the outer surface thereof to a point corresponding to about ⅓ of the thickness thereof.03-15-2012
20110104599ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - The electrophotographic photosensitive member includes a support; an intermediate layer, a charge generation layer and a charge transport layer which are provided on a conductive support in this order, in which the intermediate layer contains an ethylene-acrylic acid binary copolymer and a polyolefin resin in which repeating structural units are contained in a particular ratio.05-05-2011
20110104597ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - Provided is an electrophotographic photosensitive member having a conductive support, an intermediate layer provided on the conductive support, and a photosensitive layer provided on the intermediate layer in which the intermediate layer contains a polyolefin resin containing a specific component at a specific mass ratio, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member.05-05-2011
20110104598ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER,PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - The electrophotographic photosensitive member contains a support; and a first intermediate layer, a second intermediate layer and a photosensitive layer which are provided on the support in this order, in which the second intermediate layer contains a polyolefin resin and a metal oxide particle having a volume-average particle diameter of 20 nm or less, and the first intermediate layer contains a metal oxide particle, and the volume-average particle diameter of the metal oxide particle contained in the first intermediate layer is 10 times or more to 200 times or less as large as the volume average particle diameter of the metal oxide particle contained in the second intermediate layer.05-05-2011
20110183243ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND ELECTROPHOTOGRAPHIC IMAGING APPARATUS INCLUDING THE PHOTORECEPTOR - The disclosure provides an electrophotographic photoreceptor and an electrophotographic imaging apparatus including the photoreceptor, wherein the electrophotographic photoreceptor comprises: a conductive substrate; a charge generating layer formed on the conductive substrate; a charge transport layer formed on the charge generating layer; and an overcoat layer formed on the charge transport layer, wherein the ratio (R2/R1) of the surface resistance value (R2) of the overcoat layer to the surface resistance value (R1) of the charge transport layer is from about 0.01 to about 1.5.07-28-2011
20110183242ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor includes: a conductive substrate; a photosensitive layer including a charge-generating layer containing a charge-generating material and a charge-transporting layer containing a charge-transporting material, the charge-transporting layer having a hole mobility of about 5.0×1007-28-2011
20110183241PROTECTIVE PHOTORECEPTOR OUTER LAYER - Embodiments pertain to a novel imaging member, namely, an imaging member or photoreceptor comprising a protective outer layer which comprises light-absorbing composition that substantially prevents any light absorption by the overcoat layer. The composition comprises a low strength thermal plastic resin and a high optical density yellow dye. Thus, the light-blocking protective layer reduces the intrinsic light shock suffered by conventional overcoat layers without negatively impacting electrical properties of the overcoat layer and while improving print quality.07-28-2011
20100248101ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor comprising: 09-30-2010
20120077116ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND IMAGE FORMING APPARATUS - An organic photoreceptor comprising a cylindrical support having thereon at least a charge generation layer and a charge transport layer, the cylindrical support having a corrugation processing profile along a central axis direction of the cylindrical support provided on a circumferential surface of the cylindrical support, wherein the corrugation processing profile meets Formula 1:03-29-2012
20110045392CHARGE-CARRIER TRANSPORT LAYER FOR AN ELECTRO-OPTICAL COMPONENT, METHOD FOR ITS PRODUCTION AND ELECTRO-OPTICAL COMPONENT - A charge-carrier transport layer for an electro-optical component includes an organic charge-carrier transport material. A plurality of first particles having a diameter ranging from 1 nm to 100 nm is incorporated in the organic charge-carrier transport material and contains a first transparent oxide. A plurality of second particles having a diameter between 100 nm and 1000 nm is also incorporated into the organic charge-carrier transport material and contains a second transparent oxide. The index of refraction of the plurality of second particles differs from the index of refraction of the organic charge-transport material.02-24-2011
20110236810ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - The electrophotographic photoreceptor includes a substrate and a photosensitive layer disposed on the substrate, wherein a surface layer of the electrophotographic photoreceptor contains fluorine-containing polymer particles and a dispersion aid for the fluorine-containing polymer particles, and the surface layer has convex portions with diameters of from 200 μm to 500 μm spaced at an average interval of from 600 μm to 950 μm.09-29-2011
20100233601ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor has at least an electroconductive substrate, and a photosensitive layer formed on or above the electroconductive substrate, wherein an outermost layer of the photoreceptor is a cured membrane of a composition containing at least one compound (a) having in a single molecule thereof a charge transporting skeleton and a chain polymerizable functional group, and at least one thermopolymerizable or photopolymerizable silicone polymeric radical polymerization initiator (b).09-16-2010
20100203435ELECTROPHOTOGRAPHIC PHOTORECEPTOR, AND PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS USING THE SAME - Disclosed is an electrophotographic photoreceptor including: an electroconductive substrate; a photosensitive layer arranged on or above the electroconductive substrate; and a surface layer arranged on or above the photosensitive layer, and containing about 90% or more by atom of gallium (Ga), oxygen (O) and hydrogen (H), and having an atomic number density of about 7.8×1008-12-2010
20120100473ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE FOR IMAGE FORMING APPARATUS - An electrophotographic photoreceptor including an electroconductive substrate, a photosensitive layer, and a cured protection layer, wherein the cured protection layer comprises a cured material of a tri- or more functional radical polymerizable compound and a filler exposed from the surface of the cured protection layer which comprises a bump along the surface of the filler, and wherein the cured protection layer has a thickness (T) larger than a diameter (2r) of the filler therein and the following relationships (a) is satisfied:04-26-2012
20120100472ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - To provide an electrophotographic photoreceptor including the outermost surface layer formed from a cured film of a composition containing a compound having a chain polymerizable functional group and a charge transportable skeleton in a molecule and a chain transfer agent having a sulfur atom in a molecule, in which the reaction rate of the compound having a chain polymerizable functional group and a charge transportable skeleton in a molecule is about 90% to about 100% and the charge mobility of the cured film at an electric field intensity of 1.0×1004-26-2012
20130017477ELECTROSTATIC IMAGING MEMBER AND METHODS FOR USING THE SAMEAANM McGuire; GregoryAACI OakvilleAACO CAAAGP McGuire; Gregory Oakville CAAANM Liu; YuAACI MississaugaAACO CAAAGP Liu; Yu Mississauga CAAANM Klenkler; Richard A.AACI OakvilleAACO CAAAGP Klenkler; Richard A. Oakville CA - Embodiments pertain to a novel imaging member, namely, an electrostatic latent image generating member, and methods for using the same, that can generate an electrostatic latent image through charge acceptance control and without the need for conventional post charging photodischarge, eliminating process steps and avoiding limitations in system speed due to the transit time of charge carriers after light exposure.01-17-2013
20130017478IMAGE-FORMING APPARATUS, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, AND PROCESS CARTRIDGEAANM Oda; YasuhiroAACI KanagawaAACO JPAAGP Oda; Yasuhiro Kanagawa JP - An image-forming apparatus includes an electrophotographic photoreceptor including an outermost layer having a crosslinked structure formed by dehydration condensation of a charge transport monomer containing a hydroxyl group and a developing unit that develops an electrostatic latent image on a surface of the electrophotographic photoreceptor with a developer containing a toner manufactured by dispersing particles for forming the toner in a solvent containing water and aggregating and heating the particles to form a toner image. The apparatus satisfies at least one of the following conditions: 01-17-2013
20110159419IMAGE BEARING MEMBER, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - An image bearing member including an electroconductive substrate, a charge generation layer, a charge transport layer and, a cross-linked type charge transport layer, the cross-linked type charge transport layer having a structure unit deriving from a first component, a second component, and a third component, the first component containing a copolymer having a cyclic structure and/or a structure represented by a Chemical structure 1 as a repeating unit,06-30-2011
20110159418HYDROXYGALLIUM PHTHALOCYANINE COMPOSITE PIGMENT, ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR CONTAINING THE SAME, AND IMAGE FORMING DEVICE AND PROCESS CARTRIDGE FOR IMAGE FORMING DEVICE USING THE SAME - A hydroxygallium phthalocyanine composite pigment, which is a composite pigment wherein an azo compound expressed by the following general formula (a) is conjugated to a hydroxygallium phthalocyanine pigment, wherein the hydroxygallium phthalocyanine composite pigment has diffraction peaks at least at 7.5°, 9.9°, 12.5°, 16.3°, 18.6°, 25.1°, and 28.3° on an X-ray diffraction spectrum with Bragg angle of 2θ±0.2°, using Cu—Kα X-rays:06-30-2011
20080227006Stir-in pigment preparations for coloration of energy curable systems - A dry colorant composition is disclosed and contains (a) pigment; (b) inert carrier; and (c) rheological additive having the structure:09-18-2008
20120251933ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - An electrophotographic photoreceptor containing fluororesin particles in which the cross-section obtained by cutting a surface layer along the thickness direction satisfies the following (10-04-2012
20120251932ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - Provided is an electrophotographic photoreceptor having a conductive substrate and a photosensitive layer, such that the layer constituting the outermost surface of the photosensitive layer is formed by polymerizing a cross-linkable charge transporting material having a reactive hydroxyl group and a cross-linkable charge transporting material having a reactive alkoxy group, and the ionization potential of the outer surface of the layer constituting the outermost surface is higher by about 0.1 eV or more than the ionization potential of the inner surface of the layer constituting the outermost surface.10-04-2012
20130137022IMAGE BEARING MEMBER AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE USING THE SAME - An image bearing member includes a substrate, a photosensitive layer overlying the substrate, and a surface protective layer overlying the photosensitive layer and having a surface comprising multiple concave structures with a maximum diameter of from 1 μm to 3 μm and a maximum depth of from 10 nm to 50 nm. Any one of the concave structures has at least one other concave structure within 3 μm thereof.05-30-2013
20130137020ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD OF PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member includes a support and a photosensitive layer. The electrophotographic photosensitive member includes a surface layer that contains a polymer produced by the polymerization of a compound having a chain-polymerizable functional group. The compound having a chain-polymerizable functional group is a compound represented by the following formula (1).05-30-2013
20130101929ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - Provided is an electrophotographic photoreceptor including a conductive substrate and a photosensitive layer provided on the conductive substrate, wherein an uppermost surface layer thereof is constituted with a cured film of a composition that contains at least two kinds of reactive charge transporting materials selected from a first reactive charge transporting material having an —OH group as a reactive functional group and a second reactive charge transporting material having an —OCH04-25-2013
20130122408IMAGE FORMING APPARATUS - An image forming apparatus includes an electrophotographic photoreceptor having a photosensitive layer, and a surface protective layer that contains fluororesin particles and a fluorinated alkyl group-containing copolymer; a charging unit that charges the surface of the electrophotographic photoreceptor; an electrostatic latent image forming unit that forms an electrostatic latent image; a developing unit that accommodates a developer, and develops the electrostatic latent image with the developer to form a toner image; a transfer unit that transfers the toner image to a recording medium; and a cleaning unit that removes the remained developer, wherein when the electrophotographic photoreceptor is rotated 50,000 times by repeating the formation of an image having image sections and non-image sections and having an image density of 7%, and then the surface of the electrophotographic photoreceptor is analyzed by X-ray photoelectron spectroscopy, the zinc coating ratio is in the range of from 50% to 100%.05-16-2013
20130137019ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD FOR MANUFACTURING THE SAME, AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR UNIT, REPLACEABLE IMAGE-FORMING UNIT, AND IMAGE-FORMING APPARATUS INCLUDING THE SAME - An electrophotographic photoreceptor includes a substantially cylindrical support and a coating disposed on the support and including a photosensitive layer. The coating has lines due to polishing extending in a direction crossing a circumferential direction of a surface of the photoreceptor in at least part of a region outside an effective region available for image formation in an axial direction.05-30-2013
20110256475IMAGING MEMBERS HAVING A NOVEL SLIPPERY OVERCOAT LAYER - The presently disclosed embodiments relate in general to electrophotographic imaging members which include a protective overcoat layer comprising specific low surface energy polycarbonates of excellent optical clarity and having a slippery and adhesive surface to impact toner image transfer efficiency to receiving papers and effect contact friction reduction by which imaging members abrasion/wear resistance is enhanced. The present embodiments also disclose a process for making and using these members.10-20-2011
20100310975Electrophotographic Photoreceptor, And Image Forming Apparatus And Process Cartridge Therefor Using The Photoreceptor - An electrophotographic photoreceptor, including an electroconductive substrate; and a photosensitive layer overlying the substrate, wherein the photosensitive layer comprises a complex azo pigment comprising an azo compound having the following formula (a):12-09-2010
20130189610SHORT WAVELENGTH PHOTOCONDUCTIVE MEMBERS - There is provided a photoconductive member comprising a conductive support and disposed thereon a charge generating layer. The charge generating layer comprises a first polymer binder and a perylene-tetracarbonic acid amide pigment having blue wavelength photosensitivity of the following formula:07-25-2013
20120015290IMAGE HOLDING MEMBER FOR IMAGE FORMING APPARATUS, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An image holding member for an image forming apparatus is disclosed which the image holding member includes a support and a photosensitive layer disposed on or above the support, the photosensitive layer including a compound including a partial structure represented by the following Formula (A), wherein Ar represents a substituted or unsubstituted phenyl group, a substituted or unsubstituted monovalent polynuclear aromatic hydrocarbon group having from 2 to 10 aromatic rings, a substituted or unsubstituted monovalent condensed aromatic hydrocarbon group having from 2 to 10 aromatic rings, or a substituted or unsubstituted monovalent aromatic heterocyclic group; q represents 0 or 1; and Each n each independently represent an integer of from 0 to 7.01-19-2012
20120021346IMAGE BEARING MEMBER AND IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE USING SAME - An image bearing member having a substrate and a layer provided overlying the substrate, which has a cured material in which a compound comprising three or more methylol groups and a charge transport group is cross-linked.01-26-2012
20120021345PHOTOELECTRIC CONVERSION DEVICE, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - Provided is to provide a photoelectric conversion device including an organic compound layer which contains polymer (a) having partial structures represented by the following formulae (1) and (2) respectively. In the formula, R01-26-2012
20120028178PHOTORECEPTOR OUTER LAYER AND METHODS OF MAKING THE SAME - The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital apparatuses. Embodiments pertain to an improved electrophotographic imaging member used in customer replaceable units (CRU) comprising a very thin outer layer on the imaging member surface, where the outer layer comprises healing materials that act as a barrier against moisture and/or surface contaminants. The improved imaging member exhibits improved xerographic performance, such as reduced wear and deletions in high humidity conditions.02-02-2012
20120028177IMAGING MEMBERS COMPRISING CAPPED STRUCTURED ORGANIC FILM COMPOSITIONS - A imaging member, such as a photoreceptor, comprising a capped structured organic film comprising a plurality of segments and a plurality of linkers arranged as a covalent organic framework, wherein the structured organic film may be a multi-segment thick structured organic film.02-02-2012
20120028176IMAGING MEMBERS COMPRISING STRUCTURED ORGANIC FILMS - A photoreceptor comprising a composite structured organic film comprising a plurality of segments and a plurality of linkers arranged as a covalent organic framework, wherein the structured organic film includes a secondary component and may be a multi-segment thick structured organic film.02-02-2012
20130202994AMINE COMPOUND, ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - To provide an amine compound, represented by General Formula (I) below:08-08-2013
20120064443ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC IMAGE FORMING METHOD, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE FOR ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - An N-phenyl-diphenylisoindole derivative having the following formula (I):03-15-2012
20130209928ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC PHOTORECEPTOR CARTRIDGE AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor, an electrophotographic photoreceptor cartridge, and an image forming apparatus, which are excellent in electrical characteristics such as a responsivity and at the same time, excellent in the crack resistance, are provided. Two kinds of charge transport substances each having a specific structure and a polyester resin having a specific structure are combined, whereby the crack resistance can be improved.08-15-2013
20130209929ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC PHOTORECEPTOR CARTRIDGE AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor, an electrophotographic photoreceptor cartridge, and an image forming apparatus, which are excellent in electrical characteristics such as a responsivity and at the same time, excellent in the crack resistance, are provided. Two kinds of charge transport substances each having a specific structure and a polycarbonate resin having a specific structure are combined, whereby the electrical characteristics such as responsivity and the crack resistance can be improved at the same time.08-15-2013

Patent applications in class Radiation-sensitive composition or product

Patent applications in all subclasses Radiation-sensitive composition or product