Entries |
Document | Title | Date |
20080233499 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member having a charge generation layer containing a phenanthrene compound, a phenanthroline compound or an acenaphthene compound. Also disclosed are a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member. | 09-25-2008 |
20080292980 | ORGANIC PHOTORECEPTOR, IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE - Disclosed is an organic photoreceptor comprising on an electrically conductive support a light-sensitive layer and a surface layer, wherein the surface layer comprises a resin formed by curing a photocurable compound containing at least one polar group and at least one photocurable-functional group and a particulate metal oxide having a water absorption of 0.1 to 10%. There are also disclosed an image forming apparatus and a process cartridge. | 11-27-2008 |
20080305414 | Single layered photoconductors containing needle shaped particles - A photoconductor that, for example, includes a supporting substrate, and a single layer thereover comprised of at least one photogenerating pigment, at least one charge transport component, needle shaped particles with, for example, an aspect ratio of from 2 to about 200, and an optional electron transport compound. | 12-11-2008 |
20090053634 | Image Forming Apparatus - To provide a toner excellent in the image stability, whereby the image quality can be improved while suppressing soiling of image white parts, residual images (ghosts), fading (blotted image follow-up properties), etc., cleaning properties are good, and even when a high speed printing machine is used, it is possible to reduce a problem of soiling, etc. | 02-26-2009 |
20090068576 | Gallium phthalocyanine crystal, production process thereof, photoreceptor, process cartridge and image forming apparatus - A gallium phthalocyanine crystal has a peak of spectral absorption spectrum within a wavelength range of from about 760 nm to about 773 nm or within a wavelength range of from about 790 nm to about 809 nm. | 03-12-2009 |
20090117478 | Polycarbonate Resin and Electrophotographic Photosensitive Body Using Same -
An electrophotographic photosensitive body which has both good image stability and wear resistance under high temperature and high humidity conditions can be obtained by using a novel polycarbonate resin, which contains a structural unit represented by the general formula (I) below and having a long-chain unsaturated hydrocarbon group having a double bond, as a binder resin for a charge transport layer of an electrophotographic photosensitive body. In the formula (I), R | 05-07-2009 |
20090297960 | Triarylmethanes and Processes for Making the Same - Triarylmethane compounds used as antioxidants in overcoat layers to alleviate printing defects and an improved chemical process for the synthesis of these triarylmethane compounds using an acetal derivative of an aldehyde which significantly reduces reaction time and results with the formation of substantially no byproducts. | 12-03-2009 |
20100021835 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention provides an electrophotographic photosensitive member in which a photoconductive layer is an amorphous layer that contains a silicon atom as a main component, and a surface layer contains an aluminum atom, a zinc atom and an oxygen atom so as to satisfy Expression (1) and Expression (2): | 01-28-2010 |
20100112470 | NEGATIVELY-CHARGEABLE ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, IMAGE FORMING PROCESS AND ELECTROPHOTOGRAPHIC APPARATUS - Provided are a negatively-chargeable electrophotographic photosensitive member, an image forming process and an electrophotographic apparatus. The electrophotographic photosensitive member has, between its cylindrical substrate and photoconductive layer, a first lower-part layer formed of a non-single crystal material containing silicon atoms and a second lower-part layer formed of a non-single crystal material containing silicon atoms, and has, on its photoconductive layer, an upper-part layer formed of a non-single crystal material containing silicon atoms. The first lower-part layer is a layer containing a periodic-table Group 13 element, and the upper-part layer has a region capable of retaining electrification charges. | 05-06-2010 |
20100119963 | PHOTOCONDUCTORS AND PROCESSES THEREOF - The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to an improved photoreceptor that exhibits little to no response to injected charges and demonstrates excellent ghosting properties. | 05-13-2010 |
20100129743 | UNDERCOAT LAYERS AND METHODS FOR MAKING THE SAME - The presently disclosed embodiments are directed to layers that are useful in imaging apparatus members and components, for use in electrostatographic, including digital, apparatuses. More particularly, the present embodiments provide a robust undercoat layer comprising TiSi in which the TiO | 05-27-2010 |
20100151367 | TITANYL PHTHALOCYANINE WITH IMPROVED MILLING PROPERTIES - The invention is directed to mixtures of PcTiO and a minor amount of another, substituted titanyl phthalocyanine and the synthesis of mixtures of PcTiO and a minor amount of another, substituted titanyl phthalocyanine. The invention is further directed towards milled pigment compositions of such mixtures, and to use of such milled pigment compositions in an electrophotographic element. | 06-17-2010 |
20100279214 | POLYARYL ETHER COPOLYMER CONTAINING INTERMEDIATE TRANSFER MEMBERS - A polyaryl ether intermediate transfer media, such as a belt, and a multi layered intermediate transfer media, that includes a supporting substrate, like a polyimide and deposited on the substrate a polyaryl ether. | 11-04-2010 |
20110104601 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention relates to an electrophotographic photosensitive member obtained by providing, on a conductive support, a conductive layer containing conductive particles having a volume-average particle diameter of 0.1 μm or more, an intermediate layer, and a photosensitive layer in the stated order in which the conductive layer contains a polyolefin resin containing a specific repeating structural unit at a specific ratio, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member. | 05-05-2011 |
20120231380 | HYDROXYGALLIUM PORPHYRAZINE DERIVATIVE MIXTURE AND ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR - A hydroxygallium porphyrazine derivative mixture including: a plurality of different hydroxygallium porphyrazine derivatives each represented by the following General Formula (A-2): | 09-13-2012 |
20120251934 | ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, ELECTROPHOTOGRAPHIC METHOD, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photoconductor including: an electrically conductive substrate; and at least a photoconductive layer thereon, wherein the photoconductive layer contains a diazapentadiene derivative represented by general formula (1): | 10-04-2012 |
20130157182 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR - Disclosed is an electrophotographic photoreceptor including a conductive supporting body, a photosensitive Layer and a protective layer. In the electrophotographic photoreceptor, at least the photosensitive layer and the protective layer are sequentially layered, on the conductive supporting body, and the protective layer includes P-type semiconductor particles. | 06-20-2013 |
20130330663 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, AND METHOD FOR PRODUCING ELECTROPHOTOGRAPHIC PHOTORECEPTOR - An electrophotographic photoreceptor is disclosed. The electrophotographic photoreceptor includes a resin substrate including a carbon nanotube; and a photosensitive layer located overlying the substrate. In addition, a method for producing an electrophotographic photoreceptor is disclosed. The method includes forming a resin substrate by molding a resin forming material including a carbon nanotube; and forming a photosensitive layer overlying the resin substrate. | 12-12-2013 |
20130344424 | ORGANIC PHOTOCONDUCTORS AND METHODS OF MANUFACTURING THE SAME - Organic photoconductors and methods of manufacturing the same are disclosed. An example method to manufacture an organic photoconductor involves applying a liquid solution to a surface of a cylindrically-shaped substrate while rotating the substrate about its axis, the substrate comprising a surface layer and the liquid solution comprising a matrix polymer species and a dopant species dissolved in a solvent. The example method further involves rotating the substrate while the solvent evaporates to provide a substantially evenly distributed seamless residue film comprising the matrix polymer species and the dopant species, and cross-linking the matrix polymer species of the residue film. | 12-26-2013 |
20130344425 | COATING FOR EXTENDING LIFETIME OF AN ORGANIC PHOTOCONDUCTOR - A doped protective coating for extending a lifetime of an organic photoconductor is provided. The coating includes an in-situ cross-linked polymer matrix and a substantially uniformly distributed dopant therein. The dopant comprises a charge transport molecular species. A process for coating the organic photoconductor and a coated organic photoconductor are also disclosed. | 12-26-2013 |
20140199620 | ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - An electrophotographic photoconductor, including: an electroconductive substrate; and at least a photoconductive layer and a surface layer in this order over the electroconductive substrate, wherein the surface layer includes a resin having no charge transport properties, and first inorganic fine particles, and wherein the first inorganic fine particles are inorganic fine particles having surfaces modified with at least one of a primary amino group and a secondary amino group, and a volume resistivity of the first inorganic fine particles is 1×10 | 07-17-2014 |
20140308607 | CHARGING MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention relates to a charging member. The charging member comprises an electro-conductive substrate and an electro-conductive surface layer, wherein the surface layer includes a binder resin, an electro-conductive particle dispersed in the binder resin, and a resin particle that roughens the surface of the surface layer; the surface layer has a plurality of protrusions each derived from the resin particle in the surface thereof; the resin particle that forms the protrusion has a pore inside thereof; has a porosity Vt of porosity is 2.5% by volume or less as a whole; and has a region whose porosity V11 is from 5% by volume to 20% by volume, wherein the region is farthest away from the electro-conductive substrate in the resin particle, and assuming that the resin particle is a solid particle having no pores, the region corresponds to a 11% by volume-occupying region of the solid particle. | 10-16-2014 |
20150086915 | ORGANIC PHOTORECEPTOR AND PRODUCTION PROCESS THEREOF - Disclosed is an organic photoreceptor which provides stable, high evenness of in-plane image density over a long period of time, and a production process of the organic photoreceptor. The organic photoreceptor includes a conductive support, an organic photosensitive layer, and a surface layer made of a cured resin, which are stacked in this order. The surface layer is obtained by curing a composition containing a radical polymerizable compound for forming the cured resin, metal oxide fine particles having a surface treated with a silane coupling agent, and a silane compound represented by the following general formula (1), | 03-26-2015 |
20150118605 | Coated Photoconductors - The present disclosure is related to coated photoconductors. In an example, a coated photoconductor can comprise a photoconductor including a substrate having a charge generation layer and charge transport layer adhered thereto and a top coating adhered to the photoconductor. The top coating can comprise a cross-linkable polymer, a cross-linker, and a polymeric dopant having a weight average molecular weight of less than 500,000. Additionally, the top coating can have a thickness of 0.1 μm to 12 μm and the polymeric dopant can be present in the top coating at a concentration of 0.1 wt % to 10 wt %. | 04-30-2015 |
20150147689 | POLYCARBONATE COPOLYMER, COATING LIQUID USING SAME, AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR - A polycarbonate copolymer includes a repeating unit A represented by a formula (1) below and a repeating unit B represented by a formula (2) below, in which an abundance ratio represented by Ar | 05-28-2015 |
20150301462 | ELECTROPHOTOGRAPHIC PRINTER PHOTOCONDUCTOR BASED ON LIGAND-FREE SEMICONDUCTOR QUANTUM DOTS - A photoconductor and method of forming a photoconductor for an electrophotographic device 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 surface modified quantum dots. | 10-22-2015 |
20150309429 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD FOR MANUFACTURING THE SAME, AND ELECTROPHOTOGRAPHIC APPARATUS - A surface layer of the electrophotographic photosensitive member has a change region in which a ratio of the number of carbon atoms with respect to the sum of the number of silicon atoms and the number of carbon atoms gradually increases toward a surface side of the electrophotographic photosensitive member from a photoconductive layer side, wherein the change region has an upper charge injection prohibiting portion containing a Group 13 atom, and a surface-side portion which is positioned closer to the surface side of the electrophotographic photosensitive member than the upper charge injection prohibiting portion and does not contain the Group 13 atom, and the distribution of the Group 13 atom in a boundary portion between the surface-side portion and the upper charge injection prohibiting portion is precipitous. | 10-29-2015 |
20160109816 | PHTHALOCYANINE CRYSTAL, AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC PHOTORECEPTOR CARTRIDGE AND IMAGE-FORMING DEVICE USING THE SAME - Provided is an excellent phthalocyanine crystal having high sensitivity and little fluctuation in sensitivity for a humidity change in a use environment and applicable to the martial for solar battery, electronic paper, electrophotographic photoreceptor, etc. Namely, phthalocyanine crystal obtained by bringing a phthalocyanine crystal precursor into contact with an aromatic aldehyde compound to convert the crystal form. Also, provided is an electrophotographic photoreceptor that not only exhibits high sensitivity but also has little fluctuation in sensitivity for a humidity change in a use environment. Further, provided is an electrophotographic photoreceptor cartridge and an image-forming device, both of which can produce a stable quality images for a humidity change in a use environment by using the electrophotographic photoreceptor. | 04-21-2016 |