Arylamine Containing Patents (Class 430/58.65)
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Patent number: 11674057Abstract: The present invention relates to a heat-crosslinkable adhesive composition comprising: —from 20% to 84% by weight of composition (A); —from 15% to 79% by weight of a compatible tackifying resin (B), —from 0.01% to 5% by weight of a crosslinking catalyst (C). The invention also relates to a self-adhesive item obtained by preheating said composition, coating on a support layer, then crosslinking by heating.Type: GrantFiled: July 26, 2018Date of Patent: June 13, 2023Assignee: BOSTIK SAInventor: David Goubard
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Patent number: 11655197Abstract: A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides.Type: GrantFiled: December 3, 2020Date of Patent: May 23, 2023Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Albert Epshteyn, Andrew P. Purdy
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Patent number: 11553753Abstract: A pressure sensing insole according to an embodiment of the present invention includes: a first electrode layer including a first conductive region; a first adhesive layer disposed on the first electrode layer and including an insulating region; an intermediate layer disposed on the first adhesive layer; a second adhesive layer disposed on the intermediate layer and including an insulating region; and a second electrode layer disposed on the second adhesive layer and including a second conductive region.Type: GrantFiled: November 8, 2016Date of Patent: January 17, 2023Assignee: LG INNOTEK CO., LTD.Inventors: Won Keun Cho, Bi Yi Kim, Jeong Han Kim, Yong Hwa Park, Hyun Gyu Park, Hyun Jin Jo, In Hee Cho
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Patent number: 10720472Abstract: An X-ray detector, particularly a pixelated flat panel X-Ray detector using semiconducting perovskites as direct converting layer, has a top electrode, a photoactive layer containing at least one perovskite, and a bottom electrode, wherein the X-ray detector additionally has an electron blocking interlayer and/or a hole blocking interlayer containing an adhesion promoting additive, which can be one or more of saccharides and derivatives thereof, amino resins, epoxy resins, natural resins, and acrylic based adhesives.Type: GrantFiled: October 18, 2018Date of Patent: July 21, 2020Assignee: Siemens Healthcare GmbHInventors: Rene Fischer, Alberto Gregori, Judith Elisabeth Huerdler, Cindy Montenegro Benavides, Sandro Francesco Tedde
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Patent number: 9983494Abstract: An image forming apparatus includes an electrophotographic photoreceptor having an overcoat layer and a cleaning unit that includes a cleaning blade, a tip of which contacts with the electrophotographic photoreceptor, wherein the toner contains a toner particle which contains a binder resin containing a crystalline polyester resin, a colorant and a release agent, and an external additive, and the toner satisfies the following Expression: 2?tan ?P1?2.5, wherein tan ?P1 represents a maximum value of a mechanical loss tangent existing in a range where a complex elastic modulus is from 1×106 Pa to 1×108 Pa, which is measured at an angular frequency of 6.28 rad/sec and a strain amount of 0.3%.Type: GrantFiled: February 7, 2017Date of Patent: May 29, 2018Assignee: FUJI XEROX CO., LTD.Inventors: Yusuke Fukuda, Masataka Kuribayashi, Naoki Ota, Takafumi Koide, Katsuyuki Kitajima, Yasuhisa Morooka
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Patent number: 9678446Abstract: A electrophotographic photoconductor is provided. The electrophotographic photoconductor includes a conductive support, an undercoat layer overlying the conductive support, and a photosensitive layer overlying the undercoat layer. The undercoat layer includes a metal oxide particle, binder resin, and a compound having a urea group.Type: GrantFiled: November 19, 2015Date of Patent: June 13, 2017Assignee: Ricoh Company, Ltd.Inventors: Toshihiro Ishida, Eiji Kurimoto, Tetsuro Suzuki, Tomoharu Asano, Daisuke Nii
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Patent number: 9494881Abstract: A triarylamine derivative is represented by general formula (1) shown below. In general formula (1), each R1 independently represents a halogen atom, an optionally substituted alkyl group having a carbon number of 1-6, an optionally substituted alkoxy group having a carbon number of 1-6, or an optionally substituted aryl group having a carbon number of 6-12. Each k independently represents an integer of 0-4, and each m independently represents an integer of 1-3. Each R2 independently represents a halogen atom, an optionally substituted alkyl group having a carbon number of 1-6, an optionally substituted alkoxy group having a carbon number of 1-6, or an optionally substituted aryl group having a carbon number of 6-12. Each p independently represents an integer of 0-4.Type: GrantFiled: November 27, 2015Date of Patent: November 15, 2016Assignee: KYOCERA Document Solutions Inc.Inventors: Hideki Okada, Fumio Sugai, Kensuke Kojima
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Patent number: 9366978Abstract: 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 ?m to 12 ?m and the polymeric dopant can be present in the top coating at a concentration of 0.1 wt % to 10 wt %.Type: GrantFiled: June 25, 2012Date of Patent: June 14, 2016Assignee: Hewlett-Packard Development Company, L.P.Inventors: Krzysztof Nauka, Zhang-Lin Zhou, Hou T. Ng
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Patent number: 9147846Abstract: A pyrene compound and an organic light emitting diode device including the same are disclosed. The organic light emitting diode device includes at least two stacks provided between a first electrode and a second electrode, and a charge generation layer provided between the stacks and including an N type charge generation layer and a P type charge generation layer, wherein the N type charge generation layer is made of the pyrene compound.Type: GrantFiled: December 21, 2012Date of Patent: September 29, 2015Assignee: LG DISPLAY CO., LTD.Inventors: Shinhan Kim, Jeongdae Seo, Hyoseok Kim, Youngkwan Jung, Eunju Jeon
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Patent number: 9122183Abstract: An electrophotographic photoreceptor, including an electroconductive substrate; a photosensitive layer overlying the electroconductive substrate; and a surface layer overlying the photosensitive layer, wherein the surface layer includes a resin having no charge transportability; and an inorganic particulate material, wherein the inorganic particulate material is a zinc oxide doped with a boron group, and wherein the electrophotographic photoreceptor has a surface specific resistivity (R1) not less than 1013 ?/cm2 when the surface layer has an electric field intensity of 1×104 V/cm, and a ratio (R1/R15) of the surface specific resistivity (R1) to a surface specific resistivity (R15) when the surface layer has an electric field intensity of 1.5×105 V/cm of from 100 to 5,000.Type: GrantFiled: March 5, 2013Date of Patent: September 1, 2015Assignee: Ricoh Company, Ltd.Inventors: Tetsuya Toshine, Hiroshi Ikuno, Naohiro Toda, Takafumi Iwamoto, Kazuhiro Egawa, Toshihiro Ishida
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Patent number: 9040215Abstract: To provide an amine compound, represented by General Formula (I) below: [In General Formula (I), R1 and R2 represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aromatic hydrocarbon group, which may be identical or different; m and n are an integer of 1 or 0; Ar1 represents a substituted or unsubstituted aromatic hydrocarbon group; Ar2 and Ar3 represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aromatic hydrocarbon group; and Ar1 and Ar2 or Ar2 and Ar3 may bind to each other to form a substituted or unsubstituted heterocyclic group including a nitrogen atom.Type: GrantFiled: January 29, 2013Date of Patent: May 26, 2015Assignee: Ricoh Company, Ltd.Inventors: Tomoyuki Shimada, Masayoshi Nomura, Ryota Arai
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Patent number: 9029053Abstract: An electrophotographic photoreceptor, an electrophotographic photoreceptor cartridge, and an image forming apparatus, which are excellent in electrical characteristics such as a responsivity and at the same time, excellent in the crack resistance, are provided. Two kinds of charge transport substances each having a specific structure and a polyester resin having a specific structure are combined, whereby the crack resistance can be improved.Type: GrantFiled: February 7, 2013Date of Patent: May 12, 2015Assignee: Mitsubishi Chemical CorporationInventor: Akiteru Fujii
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Patent number: 9023562Abstract: An electrophotographic photoreceptor includes a conductive substrate; and a photosensitive layer provided on the conductive substrate that includes an organic photoconductive material and charge transport materials including a styryl compound represented by structural formula (I) below and a triphenylamine compound represented by structural formula (II) below: wherein the charge transport materials have a mixing ratio of from 8.33 to 16.67 mass % of the styryl compound to from 91.67 to 83.33 mass % of the triphenylamine compound.Type: GrantFiled: October 10, 2013Date of Patent: May 5, 2015Assignee: Fuji Electric Co., Ltd.Inventors: Takashi Ueno, Yuji Ogawa, Keiichi Kurokawa
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Patent number: 8993203Abstract: An electrophotographic photoreceptor, an electrophotographic photoreceptor cartridge, and an image forming apparatus, which are excellent in electrical characteristics such as a responsivity and at the same time, excellent in the crack resistance, are provided. Two kinds of charge transport substances each having a specific structure and a polycarbonate resin having a specific structure are combined, whereby the electrical characteristics such as responsivity and the crack resistance can be improved at the same time.Type: GrantFiled: February 7, 2013Date of Patent: March 31, 2015Assignee: Mitsubishi Chemical CorporationInventor: Akiteru Fujii
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Publication number: 20150064614Abstract: A photoreceptor includes a substrate a charge generating layer disposed on the substrate and a charge transport layer disposed on the charge generating layer, the charge transport layer includes a hole transport molecule, a fluorinated diol, and a leveling agent, the charge transport layer is substantially free of a polymer binder and catalyst, and has a post-discharge voltage of less than about 10 volts.Type: ApplicationFiled: September 4, 2013Publication date: March 5, 2015Applicant: XEROX CORPORATIONInventors: Gregory McGuire, Sarah J. Vella, Adrien P. Cote, Yvan Gagnon, Brynn Dooley
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Patent number: 8951702Abstract: A charge transport material having reduced photodeterioration is disclosed to be an ethylene compound having an ethylene double bond site, having a structure in which four different substituents are substituted at the ethylene double bond site, and having general formula (I) below where R1, R2 and R3 are each independently a hydrogen atom, a halogen atom, an alkyl group of 1 to 6 carbons or an alkoxyl group of 1 to 6 carbons; R4 is phenyl or tolyl; and Ar is one group selected from the group consisting of naphthyl, biphenyl, anthryl, xylyl, and phenanthryl. An electrophotographic photoreceptor and process for producing the electrophotographic photoreceptor also are disclosed. The electrophotographic photoreceptor includes a conductive substrate; and a photosensitive layer provided on the conductive substrate that includes the charge transport material.Type: GrantFiled: July 9, 2009Date of Patent: February 10, 2015Assignee: Fuji Electric Co., Ltd.Inventors: Fengqiang Zhu, Yoichi Nakamura, Ikuo Takaki, Seizo Kitagawa, Shinjirou Suzuki
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Patent number: 8927183Abstract: A photoreceptor including an electroconductive substrate; a photosensitive layer, which is located overlying the electroconductive substrate and which includes a charge generation material, a charge transport material having no radical polymerizability, a binder resin having no radical polymerizability, and a crosslinked polymer including a unit obtained from a first radically polymerizable monomer having three or more functional groups and no charge transport structure and a unit obtained from a second radically polymerizable monomer having a charge transport structure; and an outermost layer, which is located on the photosensitive layer and which includes a crosslinked polymer including a unit obtained from a third radically polymerizable monomer having three or more functional groups and no charge transport structure and a unit obtained from a fourth radically polymerizable monomer having a charge transport structure. An image forming method and apparatus, and a process cartridge using the photoreceptor.Type: GrantFiled: May 28, 2008Date of Patent: January 6, 2015Assignee: Ricoh Company, Ltd.Inventors: Yoshiaki Kawasaki, Akihiro Sugino, Mitsuaki Hirose
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Patent number: 8883383Abstract: A photoreceptor charge transport layer comprising a film-forming material or binder with a fluoroacyl arylamine charge transport molecule is described.Type: GrantFiled: November 21, 2012Date of Patent: November 11, 2014Assignee: Xerox CorporationInventors: Adrien P Cote, Richard A Klenkler, Amanda L Bongers, Gregory M McGuire
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Patent number: 8808951Abstract: An object of the present invention is to provide an electrophotographic photosensitive body having improved electrophotographic characteristics such as sensitivity and residual potential and also having excellent durability. The present invention provides an electrophotographic photosensitive body having a layer containing at least one specific p-terphenyl compound and at least one polycarbonate resin represented by the general formula (I): in a mass ratio of the p-terphenyl compound to the polycarbonate resin within the range of 2:8 to 7:3.Type: GrantFiled: June 5, 2013Date of Patent: August 19, 2014Assignee: Hodogaya Chemical Co., Ltd.Inventors: Katsumi Abe, Atsushi Takesue, Takehiro Nakajima, Makoto Koike, Shinya Nagai
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Patent number: 8802339Abstract: 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 methacrylate functional charge transport molecule, and a photoinitiator. The urethane acrylate functional charge transport molecule is a reaction product of hydroxyl functional charge transport molecule and a monomer having an isocyanate group and an acrylate group. 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.Type: GrantFiled: December 31, 2012Date of Patent: August 12, 2014Assignee: Lexmark International, Inc.Inventor: Scott Daniel Reeves
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Patent number: 8753789Abstract: An electrophotographic photosensitive member comprises a charge-transporting layer which is a surface layer of the electrophotographic photosensitive member; wherein the charge-transporting layer has a matrix-domain structure having: a matrix comprising: at least one resin selected from the group consisting of a polycarbonate resin C and a polyester resin D; and at least one charge-transporting substance selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (1?), and a domain comprising a polycarbonate resin A.Type: GrantFiled: August 18, 2011Date of Patent: June 17, 2014Assignee: Canon Kabushiki KaishaInventors: Harunobu Ogaki, Kazunori Noguchi, Atsushi Okuda, Shio Murai, Kazuhisa Shida, Takashi Anezaki
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Patent number: 8741512Abstract: Provided is an additive for an electrophotographic photoreceptor which is represented by Formula (I): wherein, A represents an m-valent organic group derived from arylamine represented by Formula (II) or Formula (III); T represents a divalent hydrocarbon group having from 1 to 10 carbon atoms; Rf represents a branched hydrocarbon group having from 3 to 10 carbon atoms in which at least one hydrogen atom is substituted with a fluorine atom; l represents 0 or 1; and m represents an integer of 1 to 4: wherein, Ar1, Ar2, and Ar3 each independently represent a substituted or unsubstituted aryl group having from 6 to 20 carbon atoms; Ar4, Ar5, Ar6, and Ar7 each independently represent a substituted or unsubstituted aryl group having from 6 to 20 carbon atoms; and X represents a divalent organic group represented by Formula (IV), Formula (V), or Formula (VI):Type: GrantFiled: September 12, 2012Date of Patent: June 3, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Masahiro Iwasaki, Yuko Yamano, Yukimi Kawabata
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Patent number: 8715896Abstract: A photoconductor containing an optional supporting substrate layer, a photogenerating layer, a polyalkylene glycol benzoate containing charge transport layer, and a top overcoat layer in contact with and contiguous to the charge transport layer, and which overcoat layer includes charge transport compounds and melamine resins.Type: GrantFiled: January 28, 2011Date of Patent: May 6, 2014Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 8669028Abstract: An electrophotographic photoreceptor is provided, which includes: a substrate; a photosensitive layer; and a surface protective layer, in this order, in which the protective layer contains a crosslinked product of a curable charge transporting material in a content of from about 90 to 98% by weight, and fluorinated resin particles in a content of from about 2 to 10% by weight, and the protective layer satisfies Formula (1): 0.5?b/a?1, wherein, “a” represents a ratio of fluorine atoms to the sum of carbon atoms, oxygen atoms, and fluorine atoms present in a region of the protective layer ranging from the photosensitive layer side surface thereof to a point corresponding to about ? of the thickness thereof, and “b” represents the ratio in a region of the protective layer ranging from the outer surface thereof to a point corresponding to about ? of the thickness thereof.Type: GrantFiled: March 21, 2011Date of Patent: March 11, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Yukimi Kawabata, Yuko Yamano, Kazuyuki Tada, Kenji Ikeda, Mitsuhide Nakamura
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Patent number: 8663882Abstract: To provide an electrophotographic photoreceptor excellent in electric characteristics and various characteristics, capable of forming a uniform photosensitive layer and excellent in repetitive characteristics, an image forming apparatus using it and an electrophotgraphic cartridge. A lamination type electrophotographic photoreceptor comprising an electroconductive substrate and a photosensitive layer formed thereon, characterized in that the photosensitive layer contains a compound represented by the following formula (1), the ratio of the weight of the compound represented by the formula (1) to the weight content of all binder resins contained in the photosensitive layer is from 0.15 to 0.Type: GrantFiled: September 28, 2006Date of Patent: March 4, 2014Assignee: Mitsubishi Chemical CorporationInventors: Teruyuki Mitsumori, Masayuki Hiroi, Hiroaki Takamura
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Patent number: 8663883Abstract: A charge-transporting film includes a polymer of a compound represented by Formula (I): (Ra)n-Fa-Xa-Fa?-(Ra?)n???(I) wherein Fa and Fa? independently represent a charge-transporting sub-unit including an aromatic ring, Ra and Ra? independently represent a —CH?CH2 directly bonded to the aromatic ring of the charge-transporting sub-unit or a group represented by Formula (a), Xa represents an alkylene group or a bivalent group in which an alkylene group and a group selected from —O—, —S—, and ester are combined, n and n? independently represent an integer of 0 or more (wherein n and n? are not simultaneously 0), and L represents a linking group which is represented by *—(CH2)n?—O—CH2— and which is bonded to the aromatic ring of the charge-transporting sub-unit, wherein n? is 1 or 2 and the linking group is bonded to the aromatic, ring of the charge-transporting sub-unit with *.Type: GrantFiled: February 8, 2012Date of Patent: March 4, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Wataru Yamada, Katsumi Nukada, Takatsugu Doi, Yuko Iwadate, Tomoya Sasaki
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FLUORINATED STRUCTURED ORGANIC FILM PHOTORECEPTOR LAYERS CONTAINING FLUORINATED SECONDARY COMPONENTS
Publication number: 20140045108Abstract: A imaging member, such as a photoreceptor, having an outermost layer that is a structured organic film (SOF) comprising a plurality of segments and a plurality of linkers including a first fluorinated segment, a second electroactive segment and fluorinated secondary components.Type: ApplicationFiled: August 10, 2012Publication date: February 13, 2014Applicant: XEROX CORPORATIONInventors: Sarah J. VELLA, Matthew A. HEUFT, Adrien P. COTE, Paul GERROIR -
Patent number: 8647798Abstract: A photoreceptor including an electroconductive substrate; a photosensitive layer on the electroconductive substrate; and a protection layer on the photosensitive layer, wherein the protection layer includes a radical polymerizable compound having three or more radical polymerizable groups without a charge transportable group, a monofunctional radical polymerizable compound having a specific charge transportable group and a non-radical polymerizable compound having a specific charge transportable group.Type: GrantFiled: July 24, 2012Date of Patent: February 11, 2014Assignee: Ricoh Company, Ltd.Inventors: Tomoharu Asano, Hiroshi Ikuno, Akihiro Sugino, Hideo Nakamori, Mitsuaki Hirose
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Publication number: 20140023963Abstract: An organic photoconductor includes: a conductive substrate; a charge generation layer on the conductive substrate; and a charge transport layer on the charge generation layer. An overcoat layer is formed on the charge transport layer. The overcoat layer is a latex polymer in which a charge transport material is dispersed.Type: ApplicationFiled: July 19, 2012Publication date: January 23, 2014Inventors: Zhang-Lin Zhou, Krzystof Nauka, Lihua Zhao, Hou T. Ng
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Publication number: 20140004453Abstract: An electrophotographic photosensitive member has a laminated body, and a hole transporting layer formed on the laminated body, wherein the laminated body is a laminated body having a conductive support, an electron transporting layer and a charge generating layer. When an impedance is measured by forming a circular-shaped gold electrode having a thickness of 300 nm and a diameter of 10 mm on a surface of the charge generating layer of the laminated body by sputtering, and applying an alternating electric field of 100 mV and 0.1 Hz between the conductive support and the gold electrode, the laminated body of the electrophotographic photosensitive member satisfies the following expression (1): R_opt/R_dark?0.Type: ApplicationFiled: June 28, 2013Publication date: January 2, 2014Inventors: Kenichi Kaku, Michiyo Sekiya, Kunihiko Sekido, Atsushi Okuda, Nobuhiro Nakamura, Yota Ito, Hiroyuki Tomono, Yuka Ishiduka
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Patent number: 8609310Abstract: 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).Type: GrantFiled: August 14, 2009Date of Patent: December 17, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Hitoshi Takimoto, Akira Hirano, Takatsugu Doi, Wataru Yamada, Katsumi Nukada
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Publication number: 20130288170Abstract: An electrophotographic photoreceptor includes a conductive substrate; a single-layer photosensitive layer that is provided on the conductive substrate and includes a binder resin, a charge generation material, a hole transport material, and an electron transport material, wherein a half decay exposure during positive charging is less than or equal to 0.18 ?J/cm2, and a half decay exposure during negative charging is 2 to 12 times the half decay exposure during positive charging.Type: ApplicationFiled: December 13, 2012Publication date: October 31, 2013Applicant: FUJI XEROX CO., LTD.Inventors: Yohei SAITO, Koji BANDO, Shinya YAMAMOTO, Masahiro IWASAKI, Takayuki YAMASHITA, Jiro KORENAGA, Yuko YAMANO
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Publication number: 20130288171Abstract: The present disclosure is drawn to electrostatic printing. In an example, a coated photoconductive substrate can comprise a photoconductive substrate, the photoconductive substrate including a substrate having a charge generation layer and charge transport layer adhered thereto; and a top coating adhered to the photoconductive substrate. The top coating can comprise a cross-linkable polymer, a cross-linker, and a charge transport material, where the charge transport material is dispersed throughout the top coating and may be present in the top coating in an amount ranging from 20 wt % to 50 wt %.Type: ApplicationFiled: April 30, 2012Publication date: October 31, 2013Inventors: Sivapackia Ganapathiappan, Krzysztof Nauka, Hou T. Ng
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Patent number: 8507163Abstract: A method of manufacturing an image bearing member including forming a charge generation layer overlying an electroconductive substrate, forming a charge transport layer overlying the charge generation layer, the charge transport layer including a charge transport material having a molecular weight of from 600 to 900 and a binder resin, and forming a protection layer overlying the charge transport layer by applying a liquid application containing a polymerizable compound having a charge transport structure, a polymerizable compound having no charge transport structure, a filler, a polycarboxylic acid compound, and cyclopentanone and curing the polymerizable compound having a charge transport structure, and the polymerizable compound having no charge transport structure.Type: GrantFiled: December 11, 2009Date of Patent: August 13, 2013Assignee: Ricoh Company, Ltd.Inventors: Nozomu Tamoto, Hideo Nakamori, Mitsuaki Hirose
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Patent number: 8486594Abstract: An object of the invention is to provide: a p-terphenyl compound mixture useful as a charge-transporting agent which has improved solubility in organic solvents to thereby diminish a cracking phenomenon, which poses problems concerning photoreceptor characteristics, and can realize an electrophotographic photoreceptor having high sensitivity and high durability; and an electrophotographic photoreceptor employing the compound mixture. The invention relates to: a p-terphenyl compound mixture which includes two symmetric p-terphenyl compounds respectively represented by the following general formula (1) and general formula (2) and an asymmetric p-terphenyl compound represented by the following general formula (3) which has both a group of substituents of the compound represented by general formula (1) and a group of substituents of the compound represented by general formula (2); and an electrophotographic photoreceptor containing the compound mixture.Type: GrantFiled: January 24, 2007Date of Patent: July 16, 2013Assignee: Hodogaya Chemical Co., Ltd.Inventors: Shinya Nagai, Atsushi Takesue, Makoto Koike, Katsumi Abe, Takehiro Nakajima
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Patent number: 8486595Abstract: An image bearing member including an electroconductive substrate, a photosensitive layer overlying the electroconductive substrate, and a protection layer overlying the photosensitive layer, the photosensitive layer containing a diamine compound represented by the chemical structure 1, more of the diamine compound being disposed on the photosensitive layer side than the surface side relative to the midpoint in a depth direction of the protection layer: where X represents a substituted or non-substituted arylene group, or a compound represented by a chemical structure 2: where R represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, where A1, A2, A3, and A4 independently represent an alkyl group having 1 to 4 carbon atoms, a substituted or non-substituted aryl group, or —CH2(CH2)mZ, where Z represents a substituted or non-substituted aryl group, a substituted or non-substituted cycloalkyl group, and a substituted or non-substitutedType: GrantFiled: September 10, 2010Date of Patent: July 16, 2013Assignee: Ricoh Company, Ltd.Inventors: Nozomu Tamoto, Mitsuaki Hirose, Hideo Nakamori
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Patent number: 8481234Abstract: An image bearing member including an electroconductive substrate, a photosensitive layer provided overlying the electroconductive substrate, and a furan derivative represented by the following chemical structure 1, where Ar1 and Ar2 independently represent substituted or non-substituted aryl groups and R1 represents an alkylene group having one to six carbon atoms.Type: GrantFiled: September 7, 2011Date of Patent: July 9, 2013Assignee: Ricoh Company, Ltd.Inventors: Hongguo Li, Kazukiyo Nagai, Yoshiaki Kawasaki
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Patent number: 8481235Abstract: A photoconductor that includes, for example, a supporting substrate, an undercoat layer thereover that contains a metal oxide, a phenolic resin, and a pentanediol ester; a photogenerating layer; and at least one charge transport layer.Type: GrantFiled: August 26, 2010Date of Patent: July 9, 2013Assignee: Xerox CorporationInventors: Yuhua Tong, Jin Wu, Nancy L. Belknap, Helen R. Cherniack, Marc J. Livecchi
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Patent number: 8460844Abstract: A imaging member, such as a photoreceptor, comprising a structured organic film comprising a plurality of segments and a plurality of linkers arranged as a covalent organic framework, wherein the structured organic film may comprise at least one secondary component, such as an antioxidant.Type: GrantFiled: September 27, 2011Date of Patent: June 11, 2013Assignee: Xerox CorporationInventors: Matthew A. Heuft, Adrien P. Cote, Greg McGuire, Nan-Xing Hu, Yvan Gagnon
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Publication number: 20130137027Abstract: An organic photoconductor includes an inner charge generation layer for generating charges and an outer charge transport layer for facilitating charge transport. The charge transport layer comprises a semi-interpenetrating hole-transport polymer or oligomer network in which the polymer or oligomer is cross-linked. A process for forming a charge transport layer in an organic photoconductor is also provided.Type: ApplicationFiled: November 30, 2011Publication date: May 30, 2013Inventors: Zhang-Lin Zhou, Krzysztof Nauka, Hou T. Ng
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Patent number: 8450033Abstract: To provide a latent electrostatic image bearing member including: an outermost surface layer that comprises a compound represented by the following General Formula (1) and a crosslinked resin formed by crosslinking between an isocyanate compound and a reactive charge transporting substance having at least two hydroxyl groups. where R1 and R2 may be identical or different and each represent a substituted or unsubstituted alkyl group; and R3 represents one of alkyl and aryl groups which have at least one hydroxyl group.Type: GrantFiled: November 29, 2007Date of Patent: May 28, 2013Assignee: Ricoh Company, Ltd.Inventors: Akihiro Sugino, Nobuya Mori
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Patent number: 8450034Abstract: Provided is an electrophotographic photoreceptor exhibiting not only excellent durability together with high sensitivity but also excellent image reproduction, which is suitable for an image forming method by which imagewise exposure is performed employing a light source having an emission wavelength peak being in the range of 350-500 nm to form a high density electrostatic latent image on a photoreceptor, and also provided are an image forming method employing the electrophotographic photoreceptor, and an image forming apparatus thereof.Type: GrantFiled: December 3, 2010Date of Patent: May 28, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Masanori Yumita, Toyoko Shibata, Shinichi Hamaguchi
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Publication number: 20130101929Abstract: Provided is an electrophotographic photoreceptor including a conductive substrate and a photosensitive layer provided on the conductive substrate, wherein an uppermost surface layer thereof is constituted with a cured film of a composition that contains at least two kinds of reactive charge transporting materials selected from a first reactive charge transporting material having an —OH group as a reactive functional group and a second reactive charge transporting material having an —OCH3 group as a reactive functional group, fluororesin particles, and an alkyl fluoride group-containing copolymer having repeating units represented by the following Structural Formulae A and B, and a relative dielectric constant ?r of the uppermost surface layer satisfies the following Formula (1):Type: ApplicationFiled: April 20, 2012Publication date: April 25, 2013Applicant: FUJI XEROX CO., LTD.Inventors: Jiro KORENAGA, Keiko MATSUKI, Masahiro IWASAKI, Mitsuhide NAKAMURA
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Publication number: 20130071780Abstract: [Problems] To provide a novel compound useful as an electric charge transporting agent having a high carrier mobility, and making it possible not only to stably form a photosensitive layer without precipitating crystals or developing pinholes when the photosensitive layer is being formed but also to prepare an organic photosensitive material for electrophotography featuring a high sensitivity and a low residual potential. [Means for Solution] The compound is represented by the following general formula (1); In the general formula (1), R1 to R7 are, for example, alkyl groups, X1 is, for example, —CH?CH—CH?CH2, X2 is, for example, —CH?CH2, and k and l are integers of 0 to 4.Type: ApplicationFiled: June 22, 2011Publication date: March 21, 2013Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Shigetaka Numazawa, Katsumi Abe, Kiyotaka Ihara, Takehiro Nakajima, Makoto Koike
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Patent number: 8377615Abstract: A photoconductor that includes a supporting substrate, a ground plane layer, a hole blocking layer, an adhesive layer, a photogenerating layer, and at least one charge transport layer of a charge transporting polycarbonate or a mixture of a charge transporting polycarbonate and a second polymer such as a polycarbonate.Type: GrantFiled: November 23, 2010Date of Patent: February 19, 2013Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 8318394Abstract: A photoconductor that includes a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, and at least one charge transport layer, and where the charge transport layer or layers contains a sulfonamide.Type: GrantFiled: December 22, 2009Date of Patent: November 27, 2012Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 8309286Abstract: 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.Type: GrantFiled: April 27, 2009Date of Patent: November 13, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Wataru Yamada, Katsumi Nukada, Takatsugu Doi, Akira Hirano, Hitoshi Takimoto
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Patent number: 8309285Abstract: Disclosed is an electrophotographic imaging member that includes a substrate; a charge generating layer; a charge transport layer; and a protective overcoat layer having a polyol binder; a hole transport material; an acid catalyst; a leveling agent; and no melamine formaldehyde curing agent or cross-linking additive. Also disclosed is a process for forming a photoreceptor that includes providing a substrate; applying to it a charge generating layer, charge transport layer; and protective over coating layer having a polyol binder; a hole transport material; an acid catalyst; a leveling agent; and no melamine formaldehyde curing agent or cross-linking additive. Additionally provided is a method of forming an image with the disclosed electrophotographic imaging member.Type: GrantFiled: November 7, 2007Date of Patent: November 13, 2012Assignee: Xerox CorporationInventors: Matthew A. Heuft, Hany Aziz, Kathy L. De Jong, Nan-Xing Hu
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Patent number: 8304153Abstract: An electrophotographic photoreceptor including a conductive substrate and a photosensitive layer overlying the conductive substrate. The photosensitive layer comprises a phthalimide isoindole derivative having a specific chemical formula.Type: GrantFiled: September 7, 2010Date of Patent: November 6, 2012Assignee: Ricoh Company, Ltd.Inventors: Tomoyuki Shimada, Ryota Arai
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Patent number: 8273511Abstract: 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.Type: GrantFiled: April 28, 2009Date of Patent: September 25, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Katsumi Nukada, Wataru Yamada, Takatsugu Doi, Hitoshi Takimoto, Akira Hirano