Class / Patent application number | Description | Number of patent applications / Date published |
430066000 | Product having overlayer on radiation-conductive layer | 57 |
20080199794 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD OF MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member having excellent electrophotographic properties while being prevented from the generation of blade turn-up, a method of manufacturing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member are provided. The surface layer of the electrophotographic photosensitive member contains a polymer having a specific repeating structural unit. | 08-21-2008 |
20080199795 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD OF MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member having excellent electrophotographic properties, a method of manufacturing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member are provided. The surface layer of the electrophotographic photosensitive member includes a polymer having a specific repeating structural unit and fluorine-atom-containing resin particles. The fluorine-atom-containing particles in the surface layer are dispersed so as to be provided with particle sizes almost up to those of primary particles. | 08-21-2008 |
20080220354 | Photoconductor, Photoconductor Cartridge and Image-Forming Apparatus - The surface of a photoconductor is coated with a surface protection layer comprising a cured material of a fluorine-containing photo-curing composition containing fluorinated alkyl group-containing (meth)acrylate and a photopolymerization initiator, and the surface protection layer has a fluorine atom content of 8.5 to 20% by mass. | 09-11-2008 |
20080220355 | IMAGE CARRIER, LUBRICANT-MOLDED BODY, LUBRICANT APPLICATION DEVICE, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE - An image carrier includes a photosensitive layer which carries a latent image, and a lubricant-coated layer formed on a surface of the photosensitive layer, and the lubricant-coated layer is made of a mixture containing a melaminecyanurate, and a polyimide or a silicone resin. | 09-11-2008 |
20080227008 | ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, ELECTROPHOTOGRAPHIC PROCESS CARTRIDGE CONTAINING THE SAME AND ELECTROPHOTOGRAPHIC APPARATUS CONTAINING THE SAME - An object of the present invention is to provide an electrophotographic photoconductor having an extremely low increase in friction coefficient and wear, while also having superior cleanability even after long-term or large-volume printing, and to provide an electrophotographic apparatus for forming an image using a polymerization toner without providing a unit for externally supplying a lubricant to a photoconductor. Namely, the present invention provides an electrophotographic photoconductor having a photosensitive layer and a crosslinked resin surface layer over a conductive substrate, wherein the crosslinked resin surface layer at least contains trimethylolpropane triacrylate, a dimethylpolysiloxane having a radically polymerizable functional group, and lubricating fine particles. | 09-18-2008 |
20080254379 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - The present invention provides an electrophotographic photoreceptor, a process cartridge and an image forming apparatus including the same, wherein the electrophotographic photoreceptor prevents the generation of excessive residual potential, which usually occurs on a photoreceptor having a protective layer composed of an inorganic material, and achieves both of high durability and favorable electrical characteristics. | 10-16-2008 |
20080268357 | Phthalocyanine Composition and Photoconductive Material, Electrophotographic Photoreceptor Cartridge, and Image-Forming Apparatus Each Employing the Composition - A phthalocyanine composite with high sensitivity and low environmental dependence is provided. | 10-30-2008 |
20080286672 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD FOR MANUFACTURING THE SAME, AND IMAGE-FORMING APPARATUS USING SAME - The invention relates to an electrophotographic photoreceptor in which protrusions from the surface of the photoreceptor are partly or completely covered by a resin. The effect of such resin covering is to reduce toner deposition, thereby reducing or eliminating spotting defects in images formed using the electrophotographic photoreceptor. The invention further relates to an image-forming apparatus incorporating such an electrophotographic photoreceptor. | 11-20-2008 |
20080311499 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, AND PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS USING THE PHOTORECEPTOR - An electrophotographic photoreceptor, including an electroconductive substrate; a photosensitive layer, located overlying the electroconductive substrate; and a crosslinked resin surface layer, located overlying the photo sensitive layer, wherein the crosslinked resin surface layer includes a crosslinked body of trimethylolpropanetriacrylate, isocyanate including a radical polymerizable functional group and a heat or a light-curable charge transport material. | 12-18-2008 |
20080318147 | ELECTROPHOTOGRAPHIC TONER, AND IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS EMPLOYING THE SAME - An objective is to provide an electrophotographic photoreceptor having a protective layer in which no unevenness is generated in a coated layer even though a coating solution containing a large addition amount of metal oxide is coated, mechanical strength of a protective layer is high; productivity is high with long life of the coating solution because of no sedimentation of metal oxide, electrical resistivity and mechanical strength are satisfactory, and metal oxide generating no coated layer defect together with no light scattering caused by dispersion failure is dispersed, and also to provide an image forming method and an image forming apparatus employing the electrophotographic photoreceptor. Also disclosed is an electrophotographic photoreceptor possessing a conductive support, at least a photosensitive layer and a protective layer, wherein the protective layer comprises rutile type titanium dioxide and anatase type titanium dioxide. | 12-25-2008 |
20090004587 | IMAGING MEMBER - A layer on the reverse side of an imaging member provides excellent crack resistance to the imaging layer(s) on the front side. The crack-deterring backing layer can be a laminated self-adhesive, such as tape, or a coating. Because the crack-deterring backing layer is on the reverse side, it does not affect the electrical properties of the imaging member. Overcoat layers may be used whose function is limited to improved scratch resistance. | 01-01-2009 |
20090042117 | CONDUCTIVE MEMBER, AND PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS INCLUDING THE CONDUCTIVE MEMBER - A conductive member for use in an image forming apparatus, a process cartridge including the conductive member as a charging member, an image forming apparatus including the process cartridge, a charging member, and a process cartridge and an image forming apparatus including the charging member. The conductive member includes a surface coated with a powder lubricant. The charging member includes a conductive member and a powder lubricant applied to a surface of the conductive member. | 02-12-2009 |
20090081569 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE BODY - Provided is an electrophotographic photosensitive body having a photosensitive layer on a conductive base, in which at least the outermost layer thereof contains particles having a double structure composed of a core member and a shell member having a lager rubber hardness than the core member. The electrophotographic photosensitive body has excellent mechanical strength such as wear resistance, abrasion resistance, and scratch resistance as well as excellent electrophotographic characteristics such as cleaning property for a long time period. | 03-26-2009 |
20090092916 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor includes an electrically conductive substrate, an organic photosensitive layer and a surface layer laminated in this order. The surface layer includes at least gallium (Ga) and oxygen (O) as constituent elements thereof, and has a thickness of 0.2 μm to 1.5 μm, and a microhardness of 2 GPa to 15 GPa. | 04-09-2009 |
20090130576 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD OF MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member having excellent electrophotographic properties, a method of manufacturing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member are provided. The surface layer of the electrophotographic photosensitive member includes a polymer having a specific repeating structural unit and fluorine-atom-containing resin particles. The fluorine-atom-containing particles in the surface layer are dispersed so as to be provided with particle sizes almost up to those of primary particles. | 05-21-2009 |
20090136861 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE-FORMING APPARATUS, AND ELECTROPHOTOGRAPHIC CARTRIDGE - An electrophotographic photoreceptor having high sensitivity and low residual potential is provided. The electrophotographic photoreceptor includes an undercoat layer containing metal oxide particles and a binder resin on an electroconductive substrate, and a photosensitive layer disposed on the undercoat layer, wherein the metal oxide particles have a volume average particle diameter of 0.1 μm or less and a 90% cumulative particle diameter of 0.3 μm or less which are measured by a dynamic light-scattering method in a liquid of the undercoat layer dispersed in a solvent mixture of methanol and 1-propanol at a weight ratio of 7:3; and the photosensitive layer contains crystalline phthalocyanine showing at least one distinct main diffraction peak at a Bragg angle (2θ±0.2°) of 27.0° to 29.0° in an X-ray diffraction spectrum. | 05-28-2009 |
20090214970 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, COATING LIQUID FOR UNDERCOAT LAYER OF ELECTROPHOTOGRAPHIC PHOTORECEPTOR, AND METHOD FOR PRODUCING THE SAME - A coating liquid for an undercoat layer of an electrophotographic photoreceptor which is formed by sequentially stacking the undercoat layer and a photosensitive layer on an electrically conductive support, wherein the coating liquid comprises titanium oxide microparticles and silicon nitride microparticles as an inorganic compound, a binder resin and an organic solvent. | 08-27-2009 |
20090220877 | PHOTOCURABLE COMPOSITION, OVERPRINT, AND PRODUCTION PROCESS THEREFOR - A process for producing an overprint is provided, the process including a step of preparing a printed material by printing on a printing substrate, a step of coating the printed material with a photocurable composition, and a step of photocuring the photocurable composition, the photocurable composition comprising (A) a polymerizable group-containing photopolymerization initiator and (B) a polymerizable compound. There are also provided an overprint produced by the process for producing an overprint, and a photocurable composition that includes (A) a polymerizable group-containing photopolymerization initiator and (B) a polymerizable compound. | 09-03-2009 |
20090233198 | PHOTOCURABLE COMPOSITION, OVERPRINT, AND PRODUCTION PROCESS THEREFOR - A process for producing an overprint is provided that includes a step of preparing a printed material by printing on a printing substrate, a step of coating the printed material with a photocurable composition, and a step of photocuring the photocurable composition,
| 09-17-2009 |
20090239167 | Electrophotographic Photoreceptor - This invention provides an electrophotographic photoreceptor having improved resistance to soiling by a human body-derived substance and a high image stability. The electrophotographic photoreceptor comprises an electroconductie substrate and a photosensitive layer provided on the substrate and is characterized in that the photosensitive layer contains, as a binder resin, a polycarbonate resin comprising constituent units represented by the following formula (A) and the following formula (B), wherein R | 09-24-2009 |
20090246665 | METAL OXIDE OVERCOATED PHOTOCONDUCTORS - A photoconductor containing a photogenerating layer, and at least one charge transport layer, and a top polymeric overcoat layer in contact with, and contiguous to the charge transport layer, and which overcoat layer includes an indium tin oxide. | 10-01-2009 |
20090269689 | IMAGING MEMBER - An imaging member with a unique overcoat composition adapted for forming protective, scratch-resistant overcoats is disclosed. The overcoat composition comprises a binder component that includes particular proportions of a acrylated polyol and propylene glycol. The overcoat composition also comprises a transport agent and a crosslinking agent. | 10-29-2009 |
20090280420 | ORGANIC PHOTORECEPTOR, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, AND IMAGE FORMING UNIT - An organic photoreceptor comprising a conductive support having thereon at least an intermediate layer and a photosensitive layer, wherein a skewness Rsk of a cross sectional curve of a surface of the conductive support meets the condition of −811-12-2009 | |
20090286175 | ORGANIC PHOTORECEPTOR, IMAGE FORMING APPARATUS, PROCESS CARTRIDGE, AND COLOR IMAGE FORMING APPARATUS - An organic photoreceptor comprising a photosensitive layer on a conductive substrate and a protective layer on the photosensitive layer, wherein the protective layer is a surface layer prepared via reaction curing of a compound having a radical polymerizable, curable functional group using a polymerization initiators and the content of the polymerization initiator detected in the photosensitive layer is at most 5,000 ppm. | 11-19-2009 |
20090297970 | TONER COMPOSITION FOR PREVENTING IMAGE BLOCKING - Images produced by electrophotography are often subjected to harsh conditions, such as high temperature and high relative humidity conditions. Prints when subjected to face-to-face stacking under these conditions tend to stick and are difficult to separate without damage. Ethylene-bis-stearamide is incorporated in a protective toner formulation employing a toner binder having a higher glass transition temperature than that of the conventional CYMK colored image toners employed to provide a protective layer in fused images. Further, ethylene-bis-stearamide does not interfere with typical oil release additives used in fuser rollers. By combining ethylene-bis-stearamide with polyalkane waxes having a weight average molecular weight of equal to or greater than 2000 and a poly dispersity of less than 2.0, addition protection can be realized. | 12-03-2009 |
20090297971 | Image forming unit and image forming apparatus - An image forming unit includes a photosensitive member for forming a static latent image upon exposure and a developer image with developer. The photosensitive member includes a surface layer formed of a binder resin having a static frictional coefficient equal to or less than 0.535, and having a maximum surface roughness equal to or greater than 0.32 μm. | 12-03-2009 |
20090297972 | IMAGE FORMING METHOD - An electrophotographic image forming method is disclosed. The method includes electrically charging a photoreceptor, imagewise exposing the photoreceptor so that a latent image is formed on the photoreceptor, supplying a lubricant on a surface of the photoreceptor, and developing the latent image with a toner so that a toner image is formed on the photoreceptor, transferring the toner image and cleaning the photoreceptor, in which the photoreceptor has an electro-conductive substrate, a photosensitive layer and a protective layer containing inorganic particles, a ratio RSm/D | 12-03-2009 |
20100021836 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - In an electrophotographic photosensitive member having a photoconductive layer and, provided on the photoconductive layer, a surface layer constituted of a hydrogenated amorphous silicon carbide, the ratio of the number of atoms of carbon atoms (C) to the sum of the number of atoms of silicon atoms (Si) and number of atoms of carbon atoms (C), C/(Si+C), in the surface layer is from or more to 0.75 or less, and the sum of atom density of the silicon atoms and atom density of the carbon atoms in the surface layer is 6.60×10 | 01-28-2010 |
20100021837 | METHOD FOR MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - The present invention provides a method for manufacturing an electrophotographic photosensitive member including: forming a first surface layer and a second surface layer of the electrophotographic photosensitive member by supplying a source gas into a reaction vessel so that C | 01-28-2010 |
20100035169 | CROSSLINKED SILOXANE OUTMOST LAYER HAVING AROMATIC SILICON-CONTAINING COMPOUNDS FOR PHOTORECEPTORS - An aromatic silicon-containing compound has the formula: | 02-11-2010 |
20100081073 | Titanyl phthalocyanin crystal, method for preparing the same and electrophotographic photoconductor - According to the present invention, a titanyl phthalocyanin crystal excellent in storage stability in organic solvents, a method for preparing the same and an electrophotographic photoconductor using the same are provided. In the titanyl phthalocyanin crystal, the method for preparing such a titanyl phthalocyanin crystal and the electrophotographic photoconductor using the same, the titanyl phthalocyanin crystal is characterized by having the maximum peak at a Bragg angle 2 θ±0.2°=27.2° in a CuKα characteristic X-ray diffraction spectrum and one peak within the range of 270 to 400° C. other than a peak accompanied by the vaporization of adsorbed water in a differential scanning calorimetric analysis. | 04-01-2010 |
20100167192 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - The invention provides an electrophotographic photoreceptor having at least a conductive substrate and a photosensitive layer formed on the conductive substrate wherein the outermost surface layer of the photoreceptor is composed of a cured material containing at least one compound represented by the formula (I) and a surfactant that contains, in the molecule thereof, at least one structure selected from (A) a structure that is obtained by polymerizing an acrylic monomer having a fluorine atom, (B) a structure having a carbon-carbon double bond and a fluorine atom, (C) an alkyleneoxide structure, and (D) a structure having a carbon-carbon triple bond and a hydroxy group. In formula (I), Q is an organic group having a valency of n and having hole transportability, R is a hydrogen atom or an alkyl group, L is a divalent organic group, n is 1 or more, and j is 0 or 1. | 07-01-2010 |
20100167193 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, MANUFACTURING METHOD OF ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESSING CARTRIDGE, AND IMAGE FORMING APPARATUS - The invention provides an electrophotographic photoreceptor having comprising at least an electrically conductive substrate and a photo-sensitive layer provided on the conductive substrate, the outermost layer is being a cured film of comprising a composition containing at least one compound (a) having a triphenylamine structure and four or more methacryloyl groups in one and the same molecule. | 07-01-2010 |
20100216065 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - An electrophotographic photoreceptor is provided with a conductive support; a photosensitive layer provided on the conductive support; and a surface layer provided on the photosensitive layer, wherein the surface layer contains a reaction product of surface-treated inorganic fine particles which are applied with a surface treatment with a metal oxide and a surface treatment with a compound having a polymerizable functional group. | 08-26-2010 |
20100221652 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor includes a conductive substrate, and at least a photosensitive layer on the conductive substrate, a layer located at a surface of the photosensitive layer side of the electrophotographic photoreceptor contains fluorine containing resin particles and a fluoro graft polymer having a fluoroalkyl group having 1 to 7 carbon atoms, and an area for a polystyrene equivalent molecular weight of 700,000 or more is from about 5% to about 20% of the total area in a gel permeation chromatography (GPC) chart for the fluoro graft polymer. | 09-02-2010 |
20100239967 | OVERCOAT LAYER COMPRISING METAL OXIDES - The presently disclosed embodiments are directed generally to an improved electrostatographic imaging member in which the overcoat layer is inorganic and based on the incorporation of metal oxides, such as aluminum oxide, in specific amounts. The imaging members having such an overcoat layer exhibit improved wear resistance and life extension without any adverse impacts on performance. | 09-23-2010 |
20100248104 | POLYANILINE DIALKYLSULFATE COMPLEXES CONTAINING INTERMEDIATE TRANSFER MEMBERS - An intermediate transfer media, such as a belt, that includes a polyaniline dialkylsulfate complex. | 09-30-2010 |
20100248105 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - The present invention provides an electrophotographic photoreceptor that includes: at least a photosensitive layer on a conductive support; a surface layer that contains fluororesin particles and a fluorocarbon comb graft polymer containing a repeating unit derived from a macromonomer and a repeating unit derived from a monomer having a fluoroalkyl group having 1 to 8 carbon atoms; wherein the surface layer contains phosphorus in an amount of about 5 ppm or less, and a process cartridge and electrophotographic apparatus, which use the photoreceptor. | 09-30-2010 |
20100266941 | CONDUCTIVE ROLLER - A conductive roller including a plurality of protrusion and a plurality of recessed grooves is manufactured by cylindrically extrusion-molding a thermoplastic elastomer composition that includes an elastomer composition a salt of an anion having a fluoro group and a sulfonyl group and lithium; an ethylene oxide-propylene oxide-allyl glycidyl ether copolymer; at least one material selected from the group consisting of an ethylene-acrylic ester-maleic anhydride copolymer and an ethylene-acrylic ester-glycidyl methacrylate copolymer; and not less than 1.5 parts by mass and not more than 16 parts by mass of acrylic-modified polytetrafluoroethylene with respect to 100 parts by mass of the rubber content. The difference in elevation between the highest points of the protrusions and the lowest points of the recessed grooves is not less than 100 μm, and the pitch between the highest points of the protrusions adjacent to one another in the peripheral direction is not more than 800 μm. | 10-21-2010 |
20100291480 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE BODY - An object of the present invention is to provide an electrophotographic photosensitive body having improved electrophotographic characteristics such as sensitivity and residual potential and also having excellent durability. The present invention provides an electrophotographic photosensitive body having a layer containing at least one specific p-terphenyl compound and at least one polycarbonate resin represented by the general formula (I): | 11-18-2010 |
20100330481 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - There is provided an electrophotographic photoreceptor comprising, in this order a substrate; a photosensitive layer; and a protective layer including oxygen and gallium, the protective layer including a first region and a second region that is present closer to the substrate than the first region and has a ratio of the number of atoms of oxygen to the number of atoms of gallium (oxygen/gallium) larger than that in the first region. | 12-30-2010 |
20110039197 | ORGANIC PHOTORECEPTOR AND PREPARATION METHOD THEREOF - An organic photoreceptor is disclosed, comprising, on an electrically conductive support, a photosensitive layer and a protective layer containing metal oxide particles produced by a plasma method, and the protective layer being formed by curing a composition containing the metal oxide particles and a curable compound. There is also disclosed a preparation method f of the organic photoreceptor. | 02-17-2011 |
20110045393 | ORGANIC PHOTORECEPTOR AND MANUFACTURING METHOD THEREOF - Disclosed is an organic photoreceptor, which is composed of a photosensitive layer and a protective layer, provided on an electric conductive support, and the protective layer contains a composition obtained by hardening reaction of γ-alumina particles treated with a compound having a reactive functional group with a hardenable compound. A manufacturing method thereof is also disclosed. | 02-24-2011 |
20110123914 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention provides an electrophotographic photosensitive member including a photoconductive layer, an intermediate layer made of hydrogenated amorphous silicon carbide on the photoconductive layer, and a surface layer made of hydrogenated amorphous silicon carbide on the intermediate layer, wherein a ratio (C/(Si+C); C2) in the surface layer is 0.61 to 0.75, and a sum of atom density of silicon and carbon is 6.60×10 | 05-26-2011 |
20110123915 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - The invention is an electrophotographic photosensitive member comprising a substrate, a photoconductive layer, an intermediate layer and a surface layer sequentially formed, wherein the intermediate contains silicon, carbon and hydrogen, a distribution of a hydrogen ratio which is a ratio of the number of hydrogen to the number of silicon, carbon and hydrogen in the intermediate has a maximum region, a largest hydrogen ratio in the intermediate is larger than a hydrogen ratio in the surface, the hydrogen ratio in the surface is 0.30 to 0.45, a distribution of a carbon ratio which is a ratio of the number of carbon to the number of silicon and carbon in the intermediate has a maximum and a minimum region, a carbon maximum region is 0.53 to 0.63, a carbon minimum region is 0.47 or more, and the maximum hydrogen region in the intermediate is partially superimposed on the minimum carbon region. | 05-26-2011 |
20110129770 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention provides an electrophotographic photosensitive member including: a conductive substrate; a photoconductive layer on the conductive substrate; and a surface layer made of hydrogenated amorphous silicon carbide on the photoconductive layer, wherein (C/(Si+C)) in the surface layer is 0.61 to 0.75 (both inclusive), Si+C atom density in the surface layer is 6.60×10 | 06-02-2011 |
20110318681 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR - An electrophotographic photoreceptor is disclosed, comprising, on an electrically conductive substrate, a photosensitive layer and a surface layer provided sequentially in that order, in which the surface layer is a layer formed by polymerizing a polymerizable compound (I) containing seven to ten functional groups and exhibiting a reactive group equivalent of not more than 140 and not less than 100. | 12-29-2011 |
20120064444 | IMAGE BEARING MEMBER - An image bearing member including an electroconductive substrate, a photosensitive layer provided overlying the electroconductive substrate, and a furan derivative represented by the following chemical structure 1, | 03-15-2012 |
20120141930 | Low Torque Overcoat for Imaging Device - An overcoat containing a copolymer of a first propylene monomer and a second hydrophilic monomer provides superior wear resistance and low torque to a photoreceptor. | 06-07-2012 |
20120164568 | Charge Transport Layer Containing Symmetric Charge Transport Molecules and High Tg Resins for Imaging Device - A photoreceptor charge transport layer containing a film-forming material or binder with a higher T | 06-28-2012 |
20120301818 | PROTECTIVE COATINGS FOR BIAS CHARGE ROLLERS - Exemplary embodiments provide materials and methods for an electrostatic charging member including a conductive substrate; a base layer disposed over the conductive substrate, the base layer comprising an elastomeric material and a semiconductive material; and a protective outer layer disposed over the base layer, the protective outer layer comprising a polymeric resin and a plurality of conductive particles, wherein the outer protective layer has a surface resistivity ranging from about 10 | 11-29-2012 |
20130316277 | ORGANIC PHOTORECEPTOR - The invention provides a means for improving the abrasion resistance and the scratch resistance of a protection layer by increasing the surface hardness of the protection layer of an organic photoreceptor. The invention is an organic photoreceptor constituted by laminating on an electroconductive substrate, a photosensitive layer and a protection layer successively, wherein the protection layer comprises a charge transport substance represented by the following general formula (1), a resin component obtained by curing a curable compound and tin oxide treated with a surface preparation agent having a reactive organic group, and a silica particle; | 11-28-2013 |
20140170544 | ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR AND METHOD FOR PRODUCING THE SAME - An electrophotographic photoconductor including: an electroconductive substrate; a photoconductive layer; and a surface layer, the photoconductive layer and the surface layer being laid over the electroconductive substrate, wherein the surface layer is a crosslinked layer which is cured by irradiating with light energy a composition containing a radical polymerizable monomer having no charge transporting structure, a radical polymerizable compound having a charge transporting structure and a photopolymerization initiator, and wherein the radical polymerizable compound having a charge transporting structure has a ratio Ae/As of 0.7 or higher where Ae denotes absorbance at an absorption peak wavelength λ after the radical polymerizable compound having a charge transporting structure is irradiated with light energy and As denotes absorbance at an absorption peak wavelength λ before the radical polymerizable compound having a charge transporting structure is irradiated with light energy. | 06-19-2014 |
20140186757 | Wear resistant urethane hexaacrylate materials for photoconductor overcoats - An overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a urethane resin having at least six radical polymerizable functional groups. The at least six radical polymerizable functional groups may include acrylate group, methacrylate group, styrenic group, allylic group, vinylic group, glycidyl ether group, epoxy group, or combinations thereof. This overcoat layer has an improved wear resistance, thus protecting the organic photoconductor drum from damage and extending its useful life. | 07-03-2014 |
20140186758 | Photo Conductor Overcoat Comprising Radical Polymerizable Charge Transport Molecules and Hexa-Functional Urethane Acrylates - An overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from an (UV) ultraviolet curable composition including a urethane resin having at least six radical polymerizable functional groups and a charge transport molecule having at least one radical polymerizable functional group. The amount of the urethane resin having at least six radical polymerizable functional groups in the curable composition is about 35 percent to about 65 percent by weight. The amount of the charge transport molecules having at least one radical polymerizable functional group in the curable composition is about 35 percent to about 65 percent by weight. This overcoat layer improves wear resistance of the organic photoconductor drum without negatively altering the electrophotographic properties, thus protecting the organic photoconductor drum from damage and extending its useful life. | 07-03-2014 |
20140322638 | ALCOHOL-SOLUBLE HOLE TRANSPORT MATERIALS FOR ORGANIC PHOTOCONDUCTOR COATINGS - An alcohol-soluble organic coating including a hole transport material formed on a surface of organic photoconductor is provided. The coating comprises a cationic alternate fluorene-based copolymer with phosphonium salt terminal groups embedded in an in-situ cross-linked polymer. | 10-30-2014 |
20160054668 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, AND METHOD AND APPARATUS OF FORMING ELECTROPHOTOGRAPHIC IMAGE - The electrophotographic photoreceptor of the present invention includes a conductive support, a photosensitive layer disposed on the conductive support, and a surface protective layer disposed on the photosensitive layer. The surface protective layer contains a binder resin and a fine particulate material containing at least one compound selected from MgCu | 02-25-2016 |