| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 430070000 | Radiation-conductive composition contains carbocyclic ring only | 24 |
| 20090047589 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR - Disclosed is an electrophotographic photoreceptor which is excellent in wear resistance and electrical characteristics. Specifically disclosed is an electrophotographic photoreceptor containing a polyester resin in a photosensitive layer provided on an electroconductive substrate. The polyester resin is composed of a copolymer represented by the general formula 1 below, which has a viscosity average molecular weight (Mv) of 10,000-300,000 and contains a diphenyl ether 4,4′-dicarboxylic acid component and a bivalent phenol component. | 02-19-2009 |
| 20090208860 | ORGANIC PHOTORECEPTOR AND IMAGE FORMING APPARATUS - An object of the present invention is to form a high density electrostatic latent image on an organic photoreceptor via image exposure using a semiconductor laser or a light-emitting diode of an oscillation wavelength of 350-500 nm; and to provide an organic photoreceptor exhibiting improved sensitivity and repetition characteristics or improved dot reproducibility deterioration, and an image forming apparatus employing the organic photoreceptor. In an organic photoreceptor having a charge generating layer and a charge transporting layer on a conductive support, an organic photoreceptor wherein a charge generating layer incorporates a binder resin and a Br substituted pyranthrone-based compound and the spectral spectrum of the charge generating layer has maximum absorption values each in the region of 430-445 nm, 500-510 nm, and 530-545 nm. | 08-20-2009 |
| 20100233603 | POLYCARBONATE POLYMER, COATING LIQUID, AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE BODY - A polycarbonate polymer includes: a monomer unit represented by a formula (1A) below; and a monomer unit represented by a formula (2). A haze of a solution that is obtained by dissolving the polycarbonate polymer in THF (tetrahydrofuran) at a concentration of 10 mass % is 5% or less (according to JIS K7105, optical path length of 10 mm). | 09-16-2010 |
| 20110294055 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND IMAGE-FORMING APPARATUS - It is to provide a sheet-shaped electrophotographic photoreceptor which has an uncoated area, is good in mechanical adhesiveness between the photosensitive layer and the sheet-shaped conductive substrate but excellent ease of peeling with a solvent, and is further good in electrical properties. The electrophotographic photoreceptor comprises a sheet-shaped conductive substrate and a photosensitive layer provided thereon, wherein the electrophotographic photoreceptor contains a photosensitive layer-uncoated area within the sheet surface, and the photosensitive layer contains a copolycarbonate resin having an extremely restricted specific structure. | 12-01-2011 |
| 20130040234 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, MANUFACTURING METHOD THEREFOR AND ELECTROPHOTOGRAPHIC DEVICE - An electrophotographic photoreceptor includes a conductive substrate; and a photosensitive layer provided on the conductive substrate and containing a resin binder that is a polycarbonate resin having structural units represented by General Formulae (1) and (2). The electrophotographic photoreceptor reduces the amount of wear and provides good images while maintaining a low frictional resistance on the surface of a photoreceptor drum from the beginning until after printing. A method for manufacturing such an electrophotographic photoreceptor includes applying a coating liquid containing at least such a resin binder onto a conductive substrate to thereby form a photosensitive layer. An electrophotographic device is disclosed that is equipped with such an electrophotographic photoreceptor. | 02-14-2013 |
| 20150010859 | POLYCARBONATE COPOLYMER - A polycarbonate copolymer including a repeating unit represented by the following formula (1) and having a copolymerization molar ratio represented by Ar | 01-08-2015 |
| 20150056547 | METHOD OF PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, AND EMULSION FOR A CHARGE TRANSPORTING LAYER - A method of producing an electrophotographic photosensitive member includes: preparing a solution including a charge transporting substance, and at least one compound selected from the group consisting of a fluorine-atom-containing polyacrylate, a fluorine-atom-containing polymethacrylate, a polycarbonate having a siloxane bond, a polyester having a siloxane bond, a polystyrene having a siloxane bond, a silicone oil, a polyolefin, an aliphatic acid, an aliphatic acid amide and an aliphatic acid ester; preparing an emulsion by using the solution and water; forming a coat of the emulsion on a support; and heating the coat to form a charge transporting layer. | 02-26-2015 |
| 430071000 | Polycyclo ring system | 4 |
| 20100055589 | PROCESS FOR MAKING CNT/PFA COMPOSITE COATINGS FOR FUSER APPLICATIONS - Exemplary embodiments provide nanotube-containing coating compositions and methods for making and using the coating compositions. In an exemplary embodiment, the coating composition can include a plurality of nanotubes (e.g., carbon nanotubes (CNTs)) dispersed stably and uniformly in a polymer matrix containing fluoropolymers. The coating composition can further include stabilizers to allow a stable and/or uniform dispersion of the plurality of nanotubes in the fluoropolymers. The nanotube coating composition can be coated on an article surface to improve mechanical robustness, and electrical and thermal conductivity of the coated article The coated article can be used as a fuser member, a fixing member, a pressure roller, or a release agent donor member in an electrostatographic printing machine or process. | 03-04-2010 |
| 430072000 | Substituted | 3 |
| 20110287354 | POLYCARBONATE RESIN, COATING LIQUID CONTAINING SAME, AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE BODY - Provided are: a urethane-based polycarbonate resin, including a repeating unit represented by the general formula [1], and a repeating unit represented by the general formula [2], in which the urethane-based polycarbonate resin has high wear resistance by virtue of a strong hydrogen bond between urethane groups; and an electrophotographic photoconductor, including a photosensitive layer provided on a conductive substrate, in which the electrophotographic photoconductor includes the above-mentioned polycarbonate resin as a component of the photosensitive layer, has high wear resistance, and maintains an excellent electrophotographic characteristic over a longtime period: [Chem. 1] (Ar | 11-24-2011 |
| 20130316279 | Organic Semiconductor Composition - A composition according to the present invention contains at least a triarylamine compound and at least one bicyclic compound selected from the group consisting of those of the general formulas [1] to [4], wherein the triaryl amine compound is dissolved in the at least one bicyclic compound | 11-28-2013 |
| 20140220484 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND COPYING MACHINE USING SAME, AND DOPE FOR FORMING PHOTOSENSITIVE LAYER OF SAME - In an electrophotographic photoreceptor having a photosensitive layer on a conductive support, a binder resin that constitutes the photosensitive layer includes a polymer containing a skeleton derived from dehydroabietic acid in the main chain. An electrophotographic photoreceptor which accelerates conversion to natural materials from the viewpoint of manufactured product quality or production suitability, since the binder resin of the photosensitive layer has satisfactory solvent solubility. | 08-07-2014 |
| 430073000 | Containing amino or substituted amino group | 13 |
| 20090311616 | ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR - An electrophotographic photoconductor including an electroconductive support and a photoconductive layer provided thereon, wherein the photoconductive layer includes a charge generating material, an electron transporting material and a hole transporting material, the electron transporting material being a diphenoquinone compound represented by formula (1) described herein, the hole transporting material being a compound represented by formula (2) described herein. | 12-17-2009 |
| 20100015542 | P-TERPHENYL COMPOUND AND PHOTOSENSITIVE BODY FOR ELECTROPHOTOGRAPHY USING SUCH COMPOUND - The present invention provides p-terphenyl compounds represented by the following general formula (1) and (2): | 01-21-2010 |
| 20100028792 | DEVELOPER BEARING MEMBER AND PROCESS FOR PRODUCING SAME, DEVELOPMENT APPARATUS AND DEVELOPMENT METHOD - A developer bearing member is provided which can charge a toner stably and uniformly during the period from the initial stage to the terminal stage of extensive operation even in various environments. The developer bearing member includes a substrate and an electrically conductive resin coating layer formed on the surface thereof. The electrically conductive resin coating layer is formed from a resin composition containing a phenolic resin having in its structure at least one of an —NH | 02-04-2010 |
| 20140141365 | Charge Transport Layer Comprising Fluoroacyl Arylamine - A photoreceptor charge transport layer comprising a film-forming material or binder with a fluoroacyl arylamine charge transport molecule is described. | 05-22-2014 |
| 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 |
| 20150037716 | METHOD OF PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, AND EMULSION FOR A CHARGE TRANSPORTING LAYER - The present invention provides a method of producing an electrophotographic photosensitive member in which the amount of an organic solvent to be used for a coating solution for a charge transporting layer is reduced, and the stability of the coating solution for a charge transporting layer after preservation for a long time is improved, enabling formation of a charge transporting layer having high uniformity. The method includes: preparing a solution containing a charge transporting substance, a resin having a carbonyl group, and at least one compound selected from the group consisting of a compound represented by the formula (A), a compound represented by the formula (B), a compound represented by the formula (C), a compound represented by the formula (D), and a compound represented by the formula (E); dispersing the solution in water to prepare an emulsion; forming a coat by using the emulsion; and heating the coat to form a charge transporting layer. | 02-05-2015 |
| 20150099219 | 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 a 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. | 04-09-2015 |
| 20150378268 | TRIARYLAMINE DERIVATIVE AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - A triarylamine derivative is represented by general formula (I). In general formula (I), R | 12-31-2015 |
| 20160033885 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - An electrophotographic photosensitive member includes a photosensitive layer containing a charge generating material, a charge transport material, and a binder resin. The photosensitive layer is a multi-layer type photosensitive layer or a single-layer type photosensitive layer. The multi-layer type photosensitive layer includes a charge generating layer that contains the charge generating material and a charge transport layer that contains the charge transport material and the binder resin, and in which the charge transport layer is located on the charge generating layer. The single-layer type photosensitive layer contains the charge generating material, the charge transport material, and the binder resin. The charge transport material is an enamine derivative represented by general formula (1). In general formula (1), R | 02-04-2016 |
| 430074000 | Alkyl amino group | 4 |
| 20080286673 | Single layer type electrophotographic photoconductor and image forming device - The present invention provides a single layer type electrophotographic photoconductor which exhibits the small number of generated black spots in a formed image and exhibits the excellent sensitivity characteristic even when the photoconductor is used for a long time or a photoconductor drum is rotated at a high speed and an image display device which includes the single layer type electrophotographic photoconductor. In the single layer type electrophotographic photoconductor which includes a photoconductive layer containing a binding resin, a hole transporting agent and an charge generating agent, the photoconductor contains a water-repellant polycarbonate resin as the binding resin, and a contact angle of pure water (measured temperature: 25° C.) with respect to the photoconductive layer is set to 100° or more. | 11-20-2008 |
| 20110195355 | CHARGE-TRANSPORTING VARNISHES - Provided are charge-transporting varnishes that can form satisfactory thin films and can provide organic EL elements that can exhibit excellent emission efficiency and luminance characteristics when used for EL elements that have a structure on a substrate. The charge-transporting varnishes comprise quinone diimine derivatives represented by general formula (1) that are oligoaniline derivatives or oxides thereof, electron-accepting dopant substances or hole-accepting dopant substances, and at least one kind of silane compound. | 08-11-2011 |
| 20120225376 | INTERMEDIATE TRANSFER BELT AND METHOD FOR PRODUCING THE SAME - An object is to provide an intermediate transfer belt and a method for producing the same which inhibits fine toner dots in white area in an environment of low temperature and low humidity and further, inhibits roughness of image with long-term use. An intermediate transfer belt for an electrophotographic image forming apparatus comprising a polyimide having a dispersed conductive filler, wherein the polyimide contains a unit structure represented by Formula (1); | 09-06-2012 |
| 20140363760 | POLYCARBONATE COPOLYMER, AND COATING LIQUID AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE BODY USING SAME - Provided are a polycarbonate copolymer, comprising: a repeating unit A represented by the following general formula (1); a repeating unit B represented by the following general formula (2); and a repeating unit C represented by the following general formula (3), in which: the polycarbonate copolymer has a presence ratio represented by Ar | 12-11-2014 |
