Class / Patent application number | Description | Number of patent applications / Date published |
430580350 |
Organic nitrogen in charge transport layer
| 201 |
430590100 |
And specified charge generator layer
| 13 |
430580200 |
Organosilicon or organogermanium in charge transport layer
| 10 |
430590600 |
With specified binder resin in transport layer
| 8 |
430580250 |
Cyclic ketone, cyclodicyanomethylene, or cyclomethylenemalonate in charge transport layer
| 6 |
430580100 |
Inorganic charge transport layer | 5 |
20080261135 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor comprising a conductive support and a photosensitive layer provided on or above the conductive support, the photosensitive layer having an outermost layer comprising a cured product of a composition comprising a curable resin, a surfactant containing a fluorine atom, and a charge transporting organic compound having a specific structure. | 10-23-2008 |
20080305415 | Photoconductors containing fillers - A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, at least one charge transport layer comprised of at least one charge transport component, and an overcoating layer in contact with and contiguous to the top charge transport layer, and which overcoating is comprised of a polymer, an optional overcoating charge transport component, and needle shaped particles with an aspect ratio of from 2 to about 200. | 12-11-2008 |
20080305416 | Photoconductors containing fillers in the charge transport - A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, at least one charge transport layer comprised of at least one charge transport component and needle shaped particles with an aspect ratio of, for example, from 2 to about 200. | 12-11-2008 |
20090029275 | Photoconductor Formulation Containing Boron Nitride - The present disclosure relates to incorporation of boron nitride in the charge transport layer of a photoconductor. The boron nitride may have an aspect ratio of greater than 1.0, a D50 mean particle size of less than about 10.0 μm and be present at about 5.0% (wt) or less in the charge transport layer. The cartridge may also include toner particles wherein the toner particles have a size range of about 1-25 μm and an average degree of circularity of about 0.90-1.0. The photoconductor containing boron nitride when used in an electrophotographic printer may then provide acceptable dark decay and/or photoinduced decay (PID) curves relative to photoconductors that do not contain boron nitride along with improved resistance to toner filming. | 01-29-2009 |
20150355562 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC IMAGE FORMING METHOD AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - An electrophotographic photoreceptor includes: a conductive holder; and at least a charge producing layer and a charge transport layer disposed on the conductive holder in order. The charge transport layer contains at least a binder resin, a charge transport agent and a p-type metal oxide particle. | 12-10-2015 |
430580150 |
Sulfur containing hetero ring in charge transport layer | 5 |
20080206662 | Asymmetric arylamine compounds and processes for making the same - Novel asymmetric arylamine compounds useful as hole transport molecules (HTMs) incorporated into imaging members, such as layered photoreceptor devices, and improved chemical processes for making the same. The arylamine compounds increase the charge mobility through the photoreceptor to effectuate an increase in machine speed. The chemical processes utilize a tandem Ullmann-Buchwald reaction sequence. | 08-28-2008 |
20090068577 | NAPHTHALENETETRACARBOXYLIC ACID DIIMIDE DERIVATIVE AND ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR HAVING THE SAME - The present invention provides a naphthalenetetracarboxylic acid diimide derivative represented by the following general formula (1): | 03-12-2009 |
20090104552 | PHOTORECEPTOR FOR ELECTROPHOTOGRAPHY - An object of the present invention is to provide an electrophotographic photoreceptor which is not impaired in electrophotographic properties such as charge potential and residual potential and which is also excellent in repetition stability. The invention relates to an electrophotographic photoreceptor including a conductive support having thereon a photosensitive layer containing a zirconium compound represented by the following general formula (1): | 04-23-2009 |
20090269688 | CHARGE-TRANSPORTING VARNISH - A charge-transporting varnish comprising a phenylamino-N,N′-diphenylquinonediimine derivative represented by the formula (1) as a charge-transporting substance. It becomes possible to provide a charge-transporting varnish comprising an oxidized oligoaniline, which has a high solubility in various organic solvents and also has a good filtration property because the varnish has no aggregation property. | 10-29-2009 |
20100068638 | ZINC DITHIOL CONTAINING PHOTOCONDUCTORS - A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, a zinc dithiol containing charge transport layer, a zinc dithiol containing photogenerating layer, or where the charge transport layer and the photogenerating layer both include a zinc dithiol. | 03-18-2010 |
Entries |
Document | Title | Date |
20080261136 | Electrophotographic photoreceptor, process cartridge and image-forming apparatus - An electrophotographic photoreceptor includes a conductive substrate; and a photosensitive layer that includes a phthalocyanine pigment, a charge-transporting substance and at least one kind of lignophenol derivative. | 10-23-2008 |
20080299473 | METHOD OF MANUFACTURING ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE-FORMING APPARATUS, AND PROCESS CARTRIDGE - An aspect of the present invention provides a method of manufacturing an electrophotographic photoreceptor. The method includes forming at least one layer selected from the group consisting of an undercoat layer, a photosensitive layer, and a protective layer, by jetting by an inkjet method a first coating liquid and a second coating liquid from liquid drop discharging heads which are different from each other, and mixing the first coating liquid and the second coating liquid on a conductive substrate. The first coating liquid and the second coating liquid react with each other when they are mixed. | 12-04-2008 |
20090029276 | PHOTORECEPTOR - An electrophotographic imaging member includes a substrate, a photo generating layer, and an optional overcoating layer, wherein the photo generating layer includes a cyclic triphenylamine derivative material. | 01-29-2009 |
20090087764 | PHOTOCONDUCTORS CONTAINING TEREPHTHALATE ESTERS - The present invention is an electrophotographic photoconductor having a photosensitive layer on a conductive substrate. The photosensitive layer contains terephthalate esters additives. | 04-02-2009 |
20090136859 | SOL GEL OVERCOATS INCORPORATING ZINC ANTIMONATE NANOPARTICLES - The present invention is directed to an electrophotographic element that comprises: an electrically conducting layer, a charge generating layer overlying the electrically conducting layer, and a charge transport layer overlying the electrically conducting layer. The charge transport layer, which can be an overcoat overlying the charge generating layer, includes the reaction product in an aqueous medium of a mixture comprising a silsesquioxane polymer and a amine-free surface treated zinc antimonate and an acid scavenger. | 05-28-2009 |
20090197191 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR HAVING EXCELLENT STABILITY IN TERMS OF ELECTRICAL PROPERTIES AND INTERLAYER ADHESION STRENGTH AND ELECTROPHOTOGRAPHIC IMAGING APPARATUS EMPLOYING THE SAME - An electrophotographic photoreceptor including an undercoat layer and a photosensitive layer that are sequentially formed on an electrically conductive substrate, wherein the undercoat layer has a structure in which metal oxide particles and dialkylcitrate-chelated zirconate represented by Formula 1, illustrated below, are dissolved or dispersed in a binder resin, and an electrophotographic imaging apparatus including the electrophotographic photoreceptor: | 08-06-2009 |
20090253056 | LOW FRICTION ELECTROSTATOGRAPHIC IMAGING MEMBER - Present embodiments pertain to an improved electrostatographic imaging member having low contact friction surfaces to ease sliding mechanical interaction and suppressing abrasion/wear failure and methods of preparing thereof. The improved imaging member has layers comprising slippery polyhedral oligomeric silsequioxane molecules that enhance the physical and mechanical functions and reduce the layers surface contact friction of the imaging member to extend service life. | 10-08-2009 |
20090253057 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND IMAGE FORMATION DEVICE PROVIDED WITH THE SAME - An electrophotographic photoreceptor comprising a conductive support and a photosensitive layer obtained by laminating at least a charge generation layer and a charge transport layer containing a charge transport material in this order on the conductive support, the photosensitive layer being provided with a surface protective layer on the surface thereof, wherein the protective layer contains at least filler particles which exhibit a dispersed state defined by Rf given by the following equations (1) and (2): | 10-08-2009 |
20100015539 | OVERCOAT LAYER IN PHOTORECEPTIVE DEVICE - The presently disclosed embodiments are directed to an improved low wear overcoat for an imaging member having a substrate, a charge transport layer, and an overcoat layer positioned on the charge transport layer, and a process for preparing the same, where the overcoat layer includes an aromatic polyol binder, a hole transport molecule, and a melamine formaldehyde curing resin. | 01-21-2010 |
20100068635 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, AND IMAGE FORMING METHOD, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE USING THE ELECTROPHOTOGRAPHIC PHOTORECEPTOR - A photoreceptor including a layer including a crosslinked material obtained by polymerizing at least a vinyl group-containing triarylamine compound, a radically polymerizable monomer which has at least three radically polymerizable groups in a molecule and has no charge transport structure, and an optional radically polymerizable polycarbonate. An image forming apparatus including the photoreceptor, a charger configured to charge the photoreceptor, a light irradiating device configured to irradiate the charged photoreceptor to form an electrostatic latent image; a developing device configured to develop the electrostatic latent image with a developer including a toner to form a toner image, and a transferring device configured to transfer the toner image onto a receiving material. | 03-18-2010 |
20100167191 | Electrophotographic Photoreceptor Having a Spectral Marker and Electrophotographic Printer Using the Same - A photoreceptor comprising a spectral marker and an electrophotographic printer using the same wherein the presence of the spectral marker is detected by the spectral marker detector, which enables photoreceptor authentication and thickness determinations, thereby permitting adjustment and optimization of component operating parameters within the electrophotographic printer. | 07-01-2010 |
20100227264 | Photoreceptor, Method Of Manufacturing Same, Image Formation Method, Image Forming Apparatus, And Process Cartridge - A photoreceptor including an electroconductive substrate, a photosensitive layer located overlying the electroconductive substrate, and a surface layer located overlying the photosensitive layer, the surface layer including a cross-linked material of a radical polymerizable monomer having at least 3 functional groups with no charge transport structure and a radical polymerizable compound having a charge transport structure, the surface layer having a sulfur concentration of 50 ppmw or lower. | 09-09-2010 |
20100239966 | COATING DISPERSION FOR OPTICALLY SUITABLE AND CONDUCTIVE ANTI-CURL BACK COATING LAYER - The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrostatographic, including digital, apparatuses. More particularly, the embodiments pertain to an improved electrostatographic imaging member incorporating a carbon nano tube dispersion into a high molecular weight polycarbonate and an anti-static copolymer with polyester, polycarbonate, and polyethylene glycol units in a formulation for the anti-curl back coating layer which provides a conductively suitable and stable dispersion coating solution for making an optically suitable anti-curl back coating layer. | 09-23-2010 |
20100273100 | COATING FOR OPTICALLY SUITABLE AND CONDUCTIVE ANTI-CURL BACK COATING LAYER - The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrostatographic, including digital, apparatuses. More particularly, the embodiments pertain to an improved electrostatographic imaging member incorporating a thermoplastic material pre-compounded to impart conductivity to the anti-curl back coating layer and may also contain an adhesion promoter which provides a conductively and optically anti-curl back coating layer. The conductive anti-curl back coating of the present disclosure may be formulated to have a single layer, dual layers, or triple layers. | 10-28-2010 |
20110039196 | DIGITAL ELECTROSTATIC LATENT IMAGE GENERATING MEMBER - Embodiments pertain to a novel imaging member, namely, an electrostatic latent image generating member that can generate an electrostatic latent image digitally without using a raster output scanner (ROS), photoreceptor and charger. The imaging member facilitates the charge injection process between an organic conjugated polymer and N,N′-diphenyl-N,N′bis(3-methylphenyl)-[1,1′-biphenyl]-4,4′diamine charge transport layer. | 02-17-2011 |
20110076604 | POLYESTER-BASED PHOTORECEPTOR OVERCOAT LAYER - The presently disclosed embodiments are directed generally to an improved electrostatographic imaging member in which the overcoat layer comprises cross-linkable polyester resins. The overcoat layer not only provides wear resistance, but it also provides higher charge transport efficiency and therefore better photoelectrical properties. In addition, the polyesters can cross-link with a variety of resins and thus provide good adhesion as well. | 03-31-2011 |
20110183244 | RELEASABLE UNDERCOAT LAYER AND METHODS FOR USING THE SAME - Embodiments relate generally to an imaging member that facilitates removal of the imaging member coating layers disposed over the imaging member and environmentally or “green” methods for using the same. More specifically, the present embodiments disclose an electrophotographic photoreceptor that includes a specifically formulated undercoat layer that allows easy removal of the photoreceptor layers disposed on top of the undercoat layer. The present embodiments provide a simple yet efficient method for reclaiming recycling or remanufacturing electrophotographic photoreceptors. | 07-28-2011 |
20110200926 | ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - An electrophotographic photoconductor including a layer comprising a cross-linked hardened material of a compound A with a compound B. Each of the compounds A and B has at least two alcohol groups, at least one of the compounds A and B has at least two methylol groups, at least one of the compounds A and B has at least three alcohol groups, and at least one of the compounds A and B has a charge transportable group. In other words, the compound A has X methylol groups, X being an integer of 2 or more, the compound B has Y alcohol groups, Y being an integer of 2 or more, at least one of the compounds A and B has a charge transportable group, and the following relations are satisfied:
| 08-18-2011 |
20110217642 | CHARGE TRANSPORT PARTICLES - A charge transport particle comprising a plurality of segments and a plurality of linkers arranged as a covalent organic framework, wherein at a macroscopic level the covalent organic framework is a particle that has electroactive added functionality. | 09-08-2011 |
20120003577 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND IMAGE FORMATION DEVISE COMPRISING SAME - An electrophotographic photoreceptor, comprising a conductive support, an undercoat layer and a photosensitive layer formed in sequence, the electrophotographic photoreceptor characterized in that a coating solution for undercoat layer formation for producing the electrophotographic photoreceptor contains at least a binder resin and metal oxide particles surface-treated with anhydrous silicon dioxide. | 01-05-2012 |
20120028179 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE FOR IMAGE FORMING APPARATUS USING THE PHOTORECEPTOR - An electrophotographic photoreceptor, including an electroconductive substrate; a charge generation layer; a hole transport layer; and a hole transportable protection layer being a three-dimensional crosslinked film formed by irradiating at least a radical polymerizable hole transportable compound with UV to be chain-polymerized, layered in this order, wherein the hole transportable protection layer comprises a silole compound having the following formula (1): | 02-02-2012 |
20120171601 | FURAN DERIVATIVE AND ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR - A furan derivative represented by the following General Formula ( | 07-05-2012 |
20130052576 | FLEXIBLE IMAGING MEMBERS COMPRISING IMPROVED GROUND STRIP - The presently disclosed embodiments relate generally to a flexible imaging member having a novel ground strip layer. The flexible imaging member may have a full flexible imaging member structure with an anticurl backing coating (ACBC) as well as a structurally simplified flexible imaging member being ACBC-free. | 02-28-2013 |
20140038093 | QUANTUM DOT PHOTOCONDUCTOR FOR AN ELECTROPHOTOGRAPHIC PRINTER - A photoconductor and method of forming a photoconductor comprising forming a charge generation material comprising a plurality of quantum dots, and forming an active region comprising one or more photoconductor layers comprising the charge generation material including the quantum dots is disclosed. | 02-06-2014 |
20140087297 | LOW STRAIN ANTI-CURL BACK COATING FOR FLEXIBLE IMAGING MEMBERS - Present embodiments relate generally to the flexible electrostatographic imaging members prepared to comprise a plasticized charge transport layer, plasticized ground strip layer, and a novel plasticized anti-curl back coating layer prepared to have internal stress/strain reduction, superb wear resistance property, and render the resulting flexible imaging members with absolute flatness to meet the functional requirement of electrostatographic imaging apparatuses. More particularly, the embodiments pertain to the reformulation of an anti-curl back coating layer comprising a novel high molecular weight film forming A-B diblock copolymer, a copolyester adhesion promoter, an organic or inorganic particles dispersion, and a plasticizer in the layer's material matrix. | 03-27-2014 |
20150111138 | Tough Wear Resistant Urethane Hexaacrylate Materials for 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. | 04-23-2015 |
20160161870 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD OF PRODUCING SAME, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photoreceptor is provided that can achieve reductions in the amount of wear in the photoreceptor surface while producing an excellent image on a long-term basis. Also provided are a method of producing the electrophotographic photoreceptor and an electrophotographic apparatus. The electrophotographic photoreceptor includes a conductive substrate; and a photosensitive layer provided on the conductive substrate and being composed of a resin having a molecular structure optimized using molecular dynamic calculations that is a helical structure, and having a value for a ratio r/I between the diameter (r) and helix pitch (I) of the helical structure that ranges from 0.04 to 1.0. | 06-09-2016 |