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Akira Hirano

Akira Hirano, Tokyo JP

Patent application numberDescriptionPublished
20110076605ELECTROPHOTOGRAPHIC 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

Akira Hirano, Kanagawa JP

Patent application numberDescriptionPublished
20090068576Gallium 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
20100167192ELECTROPHOTOGRAPHIC 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
20100167193ELECTROPHOTOGRAPHIC 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
20100233601ELECTROPHOTOGRAPHIC 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
20100248101ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - An electrophotographic photoreceptor comprising: 09-30-2010

Akira Hirano, Yokohama-Shi JP

Patent application numberDescriptionPublished
20090028043Method for relieving failure, and packet communication device - When a failure occurs on a path set between two packet communication devices, a protection path is set and the communication is recovered without having the effect of the path failure on devices other than the two packet communication devices. When a packet communication device detects a failure in a transmission line or a path between the device itself and a correspondent packet communication device to restore the communication, at least one of a topology modification notice pending step, in which the fact that the connection with the correspondent packet communication device being disconnected is not reported to the packet communication devices other than the correspondent packet communication device for a prescribed time, and a path restoration step, in which path setting signaling is performed to trigger cooperation of the path communication device and the correspondent packet communication device to set the protection path within the prescribed time, is executed together with a virtual interface setting modification step in which a virtual interface used for the path disconnected by the failure is set to the protection path.01-29-2009
20100172653Optical Transmission System, Optical Transmitter for Optical Transmission System, and Optical Receiver for Optical Transmission System - An optical transmission system is provided in which the optimum operating point of a Mach-Zehnder interferometer, matched to the optical frequency of the light source on the transmitting side, can be set. The optical receiver (07-08-2010