Patent application number | Description | Published |
20080220356 | Electrophotographic photoreceptor, process cartridge and image-forming apparatus - An electrophotographic photoreceptor including a photosensitive layer provided including a first functional layer including a compound represented by the following Formula (I). In Formula (I), F represents an n-valent organic group having hole transportation ability; R | 09-11-2008 |
20080254380 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor includes a conductive support and a photosensitive layer. The photosensitive layer is disposed on the conductive support, and includes a layer that includes, in the same layer, at least a charge generating material and a compound having a triple bond and a hydroxy group. | 10-16-2008 |
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 |
20090004583 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND FILM FORMING COATING SOLUTION - According to the invention, there is provided an electrophotographic photoreceptor comprising a conductive substrate and a photosensitive layer provided on a surface of the conductive substrate, an outermost layer of the photosensitive layer containing a crosslinked product composed of a guanamine compound and at least one charge transporting material having at least one substituent selected from the group consisting of —OH, —OCH | 01-01-2009 |
20090238602 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor including a conductive substrate and a photosensitive layer provided on a surface of the conductive substrate, 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, —OCH | 09-24-2009 |
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 |
20100233601 | ELECTROPHOTOGRAPHIC 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 |
20100248101 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor comprising:
| 09-30-2010 |
20110076605 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD FOR PRODUCING ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor includes an electroconductive substrate and a photosensitive layer formed thereon, the photosensitive layer including a sub-layer that constitutes an outermost surface of the photosensitive layer, the sub-layer including an organic solvent having a boiling point of from about 65° C. to about 250° C. in an amount of from about 5,000 ppm to about 50,000 ppm, and the sub-layer including a polymer of a charge transporting material having a polymerizable group. | 03-31-2011 |
20110195354 | ELECTROPHOTOGRAPHIC 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 (I | 08-11-2011 |
20110207039 | ELECTROPHOTOGRAPHIC 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 |
20110207041 | ELECTROPHOTOGRAPHIC 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 |
20110215303 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE IMAGE FORMING APPARATUS, AND CURED FILM - An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer provided on the conductive substrate, and an outermost surface layer of the electrophotographic photoreceptor includes a cured film of a composition containing a charge transporting material having a chain polymerizable functional group and at least one selected from a nitroso compound, a nitrone compound or a nitro compound. | 09-08-2011 |
20110229809 | IMAGE 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 |
20110318676 | ELECTROPHOTOGRAPHIC 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/cm | 12-29-2011 |
20110318677 | ELECTROPHOTOGRAPHIC 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 |
20120021345 | PHOTOELECTRIC 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, R | 01-26-2012 |
20120100472 | ELECTROPHOTOGRAPHIC 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 1.0×10 | 04-26-2012 |
20120196214 | ELECTROPHOTOGRAPHIC 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 |
20120196215 | THIOL 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 |
20120202146 | ELECTROPHOTOGRAPHIC 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 |
20120231379 | FLUORINE-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 |
20130052570 | CHARGE-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 |
20130052571 | NOVEL 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 |
20130052572 | COMPOUND, 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 |
20130052573 | NOVEL 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 |
20130260295 | COMPOSITION FOR FORMING CHARGE TRANSPORTING FILM, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - Provided is a composition for forming a charge transporting film, including a solvent having a dielectric constant of 5.0 or more, at least one kind of compound selected from a group consisting of the following compounds (I-a), (I-b), (I-c), and (I-d) and a compound represented by the following Formula (II), fluorine-containing resin particles, and a fluorine-containing dispersant, | 10-03-2013 |
20140072341 | CHARGE TRANSPORTING FILM, PHOTOELECTRIC CONVERSION DEVICE, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A charge transporting film includes a cured film of a composition containing at least one selected from reactive compounds represented by the following Formula (I): | 03-13-2014 |
20140072906 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - Provided is an electrophotographic photoreceptor including a conductive substrate; a charge generating layer provided on the conductive substrate; a charge transporting layer provided on the charge generating layer; and an outermost surface layer provided on the charge transporting layer, wherein the charge transporting layer includes a charge transporting material and a polycarbonate copolymer having a solubility parameter as calculated by a Feders method of from 11.40 to 11.75, and the outermost surface layer includes a charge transporting material, fluorine-containing resin particles, and a fluorine-containing dispersant. | 03-13-2014 |
20140072907 | ELECTROPHOTOGRAPHIC 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 outermost surface layer includes a cured film of a composition containing inorganic particles having polymerizable groups and at least one selected from the reactive compounds represented by the following formulae (I) and (II): | 03-13-2014 |
20140079435 | NOVEL 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): | 03-20-2014 |
20140205939 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor includes a conductive substrate, and a photosensitive layer provided on the conductive substrate, and an outermost surface layer of the electrophotographic photoreceptor is constituted with a polymerized product or crosslinked product of a composition including at least one selected from reactive compounds represented by the formulae (I) and (II) and a non-reactive charge transporting material, a content of the non-reactive charge transporting material in the composition is from 5% by weight to 40% by weight based on the weight of the outermost surface layer, and a content of the reactive compound before the reaction in the outermost surface layer is 3% by weight or less based on the weight of the outermost surface layer. | 07-24-2014 |
20140255834 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor includes an electroconductive substrate, a photosensitive layer provided on the electroconductive substrate, and an outermost surface layer, wherein the outermost surface layer is a layer constituted with a cured product of a composition including at least one of non-charge transporting compounds represented by formulae (I) and (II), and at least one non-reactive charge transporting material: | 09-11-2014 |
20140255835 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor includes an electroconductive substrate; a photosensitive layer that is provided on the electroconductive substrate; and an outermost surface layer, wherein the outermost surface layer is a layer made of a cured product of a composition that contains position isomer mixture of at least one kind among non-charge transporting compounds represented by Formulae (I) and (II) and at least one kind among non-reactive charge transporting materials. | 09-11-2014 |
20140295337 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor includes a conductive substrate; a charge generating layer provided on the conductive substrate; a charge transporting layer provided on the charge generating layer, which is configured to include a charge transporting material and a polycarbonate; and an outermost surface layer provided on the charge transporting layer, which is constituted with a cured film formed of a composition including a chain polymerizable compound having at least a charge transporting skeleton and a chain polymerizable functional group in the same molecule, and has an A value represented by the following equation (1) being from 0.1 to 0.3, and a B value represented by the following equation (2) being 0.02 or less, each of which is determined by an Attenuated total reflection Fourier transform infrared spectroscopy: | 10-02-2014 |
20140321882 | COMPOSITION FOR FORMING CHARGE TRANSPORTING FILM, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - Provided is a composition for forming a charge transporting film, including a solvent having a dielectric constant of 5.0 or more, at least one kind of compound selected from a group consisting of the following compounds (I-b), (I-c), and (I-d), fluorine-containing resin particles, and a fluorine-containing dispersant, the following compounds (I-b), (I-c), and (I-d) further represented by a compound represented by the following Formula (V) | 10-30-2014 |
20150071693 | STRIPPING MECHANISM, IMAGE-FORMING UNIT, AND IMAGE-FORMING APPARATUS - A stripping mechanism includes a substantially sheet-shaped stripping member that has a first surface and a second surface opposite the first surface, that is elastically deformed with part of the first surface in contact with an image carrier which rotates and carries an image, and that strips a recording medium from the image carrier; and an opposing member that is disposed downstream of the stripping member in a direction in which the image carrier moves, that extends toward the image carrier, and that is opposite the first surface of the stripping member. | 03-12-2015 |