Triamine, Or Diamine Containing Patents (Class 430/58.75)
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Publication number: 20130209929Abstract: 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: ApplicationFiled: February 7, 2013Publication date: August 15, 2013Applicant: Mitsubishi Chemical CorporationInventor: Mitsubishi Chemical Corporation
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Publication number: 20130202994Abstract: 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: ApplicationFiled: January 29, 2013Publication date: August 8, 2013Inventors: Tomoyuki SHIMADA, Masayoshi NOMURA, Ryota ARAI
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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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Publication number: 20130177842Abstract: To provide an electrophotographic photoconductor, which contains a layer containing a cured product obtained by crosslinking (i) a compound containing a charge-transporting group and three or more methylol groups, and (ii) a compound containing a charge-transporting group, which is other than the compound containing a charge-transporting group and three or more methylol groups.Type: ApplicationFiled: September 13, 2011Publication date: July 11, 2013Inventors: Yuuji Tanaka, Norio Nagayama, Kazukiyo Nagai
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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: 8475982Abstract: An electrophotographic photoreceptor comprising: a conductive support; and a photosensitive layer, wherein the photosensitive layer comprises a functional layer that comprises at least one of a first compound represented by formula (I); and a second compound derived from the first compound: wherein F represents a hole-transporting, n-valent organic group; R independently represents an organic group having from 1 to 18 carbon atoms; T represents a divalent group; m indicates 0 or 1; and n indicates an integer of from 1 to 4.Type: GrantFiled: March 27, 2006Date of Patent: July 2, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Masahiro Iwasaki, Katsumi Nukada, Wataru Yamada, Kenji Yao
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Patent number: 8465888Abstract: A photoconductor comprising a substrate, an undercoat layer, a photogenerating layer and a charge transport layer is described. The undercoat layer is disposed on the substrate and comprises a metal oxide, and a mixture of a phenolic resin and a cyclohexanecarboxylate.Type: GrantFiled: January 27, 2011Date of Patent: June 18, 2013Assignee: Xerox CorporationInventors: Yuhua Tong, Jin Wu, Edward F. Grabowski, 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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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: 8433222Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. In particular, the present embodiments pertain to an improved imaging member comprising a single layer in which the single layer further comprises a photoactive material in a polymeric binder. The embodiments are free of photosensitive pigments and traditional electron transporting small molecules.Type: GrantFiled: June 30, 2010Date of Patent: April 30, 2013Assignee: Xerox CorporationInventors: Richard A. Klenkler, Gregory McGuire, Matthew A. Heuft
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Patent number: 8404412Abstract: The present invention relates to an electrophotographic photoreceptor having an electroconductive substrate, and a charge transport layer and a charge generation layer formed on the substrate, characterized in that the charge transport layer contains a charge transport material represented by formula (1) and a binder resin, and the mass ratio of the charge transport material to the binder resin is from 5/100 to 45/100: wherein Ar1 is an arylene group which may have a substituent; each of Ar2, Ar3, Ar4 and Ar5 is an aryl group which may have a substituent; and n is an integer of from 3 to 6.Type: GrantFiled: December 1, 2006Date of Patent: March 26, 2013Assignee: Mitsubishi Chemical CorporationInventor: Teruyuki Mitsumori
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Patent number: 8399164Abstract: A photoconductor that includes, for example, a supporting substrate, an undercoat layer thereover wherein the undercoat layer contains a metal oxide a phenolic resin and a dendritic polyester polyol; a photogenerating layer; and at least one charge transport layer.Type: GrantFiled: April 28, 2010Date of Patent: March 19, 2013Assignee: Xerox CorporationInventor: Jin Wu
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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: 8349529Abstract: An electrophotographic photoconductor including a conductive substrate and a photoconductive layer thereover, wherein the photoconductive layer contains a charge generation agent and a charge transport agent represented by General Formula (A-I), (B-I) or (C-I), and an amine compound represented by General Formula (II): where R1-3 each represent hydrogen, halogen or (un)substituted C1-6 alkyl, and n is 1 or 2, where R1-2 each represent C1-6 alkyl and R3-6 each represent hydrogen, halogen or (un)substituted C1-6 alkyl, where R8-33 each represent hydrogen, C1-4 alkyl, C1-4 alkoxy, or (un)substituted phenyl, and may be identical or different, where A and B each represent a group represented by formula (i) or (ii), and may be identical or different: —CH2X??formula (i) —CH2CH2Y??formula (ii) where X and Y each represent an (un)substituted aromatic group.Type: GrantFiled: May 12, 2010Date of Patent: January 8, 2013Assignee: Ricoh Company, Ltd.Inventors: Keisuke Shimoyama, Takaaki Ikegami, Eiji Kurimoto, Kohsuke Yamamoto, Tetsuya Sakuma, Toshihiko Koizumi, Hajime Suzuki, Hideki Nakamura
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Patent number: 8343697Abstract: An electrophotographic photoconductor containing at least a charge generation material and a charge transport material on a conductive support, the electrophotographic photoconductor comprising a diamine compound represented by the formula (1), and also a polyarylate resin having a structural unit represented by the following formula (I).Type: GrantFiled: April 13, 2009Date of Patent: January 1, 2013Assignee: Sharp Kabushiki KaishaInventors: Tomoko Kanazawa, Hiroshi Sugimura
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Patent number: 8329367Abstract: A photoconductor that includes a supporting substrate, an optional ground plane layer, an optional hole blocking layer, a photogenerating layer, and at least one charge transport layer, and where the charge transport layer contains a polyamideimide.Type: GrantFiled: January 28, 2010Date of Patent: December 11, 2012Assignee: Xerox CorporationInventors: Jin Wu, Yuhua Tong, Linda L Ferrarese, Edward C Savage
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Patent number: 8304152Abstract: 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 contains a spirodilactam based polycarbonate.Type: GrantFiled: July 29, 2010Date of Patent: November 6, 2012Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 8288066Abstract: To provide an electrophotographic photoreceptor having a high sensitivity, a good balance of various electric properties such as chargeability and residual potential, a good stability of the coating solution, and an excellent light resistance. An electrophotographic photoreceptor comprising an electroconductive support having thereon a photosensitive layer, wherein the photosensitive layer contains a compound represented by the following formula (1): (wherein R1 represents a group having a chiral center, R2 represents a hydrogen atom, an alkyl group which may have a substituent, or an aryl group which may have a substituent, R3 and R4 each independently represents an alkylene group which may have a substituent, or an arylene group which may have a substituent, and R5, R6, R7 and R8 each independently represents an alkyl group which may have a substituent, or an aryl group which may have a substituent, and at least one member of R5 to R8 is an aryl group having a substituent).Type: GrantFiled: January 5, 2006Date of Patent: October 16, 2012Assignee: Mitsubishi Chemical CorporationInventors: Yuka Nagao, Teruyuki Mitsumori, Masayuki Hiroi
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Patent number: 8278015Abstract: The presently disclosed embodiments are directed generally to an improved electrostatographic imaging member incorporating specific anti-oxidants into the charge transport layer to achieve substantially reduced lateral charge migration. The imaging members having such an charge transport layer can include charge transport molecules such as N,N,N,?N?-tetra(4-methylphenyl)-(1,1?-biphenyl)-4,4?-diamine without increased sensitivity to corona-induced lateral charge migration.Type: GrantFiled: April 15, 2009Date of Patent: October 2, 2012Assignee: Xerox CorporationInventors: Gregory McGuire, Jennifer Coggan
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Patent number: 8268520Abstract: 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 contains a polyalkylene glycol benzoate and a fluorinated polymer.Type: GrantFiled: May 26, 2010Date of Patent: September 18, 2012Assignee: Xerox CorporationInventors: Jin Wu, Kenny-Tuan T Dinh, Linda L Ferrarese, Marc J Livecchi, Edward C Savage, Michael E Zak
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Patent number: 8268521Abstract: According to an aspect of the invention, an electrophotographic photoreceptor including a conductive substrate and a photosensitive layer provided on a surface of the conductive substrate is provided. In the electrophotographic photoreceptor, 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, —OCH3, —NH2, —SH, and —COOH, an acidic substance, and at least one compound selected from the group consisting of compounds represented by the following formula (A) and compounds represented by the following formula (B).Type: GrantFiled: May 15, 2009Date of Patent: September 18, 2012Assignees: Fuji Xerox Co., Ltd., Xerox CorporationInventors: Katsumi Nukada, Hirofumi Nakamura, Mitsuhide Nakamura, Koji Bando, Kenny-tuan T Dinh, Giuseppa Baranyi, Nan-Xing Hu, Michael Zak
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Patent number: 8257891Abstract: To provide an electrophotographic photoconductor including: a substrate; a charge generating layer; and a charge transporting layer, the charge generating layer and the charge transporting layer being disposed over the substrate, wherein the charge transporting layer contains a charge transporting material represented by General Formula (I) below and an additive represented by General Formula (II) below: where R1, R2 and R3 each independently denote any one of a hydrogen atom, a halogen atom, an alkyl group which may contain a substituent, and an alkoxy group which may contain a substituent, where R4 and R5 each denote a tertiary butyl group, and R6 and R7 each independently denote one of an alkyl group which may contain a substituent, and an aryl group which may contain a substituent.Type: GrantFiled: January 8, 2010Date of Patent: September 4, 2012Assignee: Ricoh Company, Ltd.Inventors: Naoki Nakatake, Atsushi Takehara, Toshihiko Koizumi, Tsuyoshi Ueda, Tadayoshi Uchida, Hajime Suzuki
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Patent number: 8241824Abstract: An electrophotographic photoreceptor comprising an electrically conductive support having thereon a photo sensitive layer having a laminated structure comprising a charge generation layer and a charge transport layer, wherein the charge generation layer comprises a titanyl phthalocyanine pigment having a crystal structure exhibiting the following peaks of Bragg angles 2? (±0.2°) of X-ray powder diffraction employing a characteristic X-ray of a CuK? radiation (having a wavelength of 1.542 ?): at least a largest diffraction peak at 27.2°, major diffraction peaks at 9.4°, 9.6° and 24.0°, and a diffraction peak of a lowest angle at 7.3° while exhibiting no peak between the peaks of 7.3° and 9.4° and no peak at 26.Type: GrantFiled: June 17, 2010Date of Patent: August 14, 2012Assignee: Konica Minolta Business Technologies, Inc.Inventor: Akihiko Itami
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Publication number: 20120196217Abstract: 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: ApplicationFiled: January 28, 2011Publication date: August 2, 2012Applicant: XEROX CORPORATIONInventor: Jin WU
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Publication number: 20120189347Abstract: A compound of the formula wherein R1, R2, R3, and R4 can be the same or different, and wherein each of R1, R2, R3, and R4 are independently selected from (i) hydrogen, (ii) an alkyl group, (iii) an aryl group, (iv) an arylalkyl group, (v) an alkylaryl group, (vi) an alkoxy group, (vii) an aryloxy group, (viii) an arylalkyloxy group, (ix) an alkylaryloxy group; and wherein R5 is (i) an alkylene group, (ii) an arylene group, which can be substituted or unsubstituted arylene, and wherein hetero atoms may optionally be present in the arylene group, (iii) an arylalkylene group, or (iv) an alkylarylene group. Further, a process for preparing a charge transport compound comprises contacting a hydroxy-functionalized triarylamine with a dihalide in an alkaline-water solution at room temperature; wherein the raw material for the dihalide comprises a purified or recovered halogen-organic solvent-containing waste stream.Type: ApplicationFiled: April 3, 2012Publication date: July 26, 2012Inventor: Yuhua Tong
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Publication number: 20120189949Abstract: A photoconductor containing a photogenerating layer, and at least one charge transport layer, and an overcoat layer in contact with, and contiguous to the charge transport layer. The overcoat layer is comprised polyethylene-block-polyethylene glycol copolymer and a charge transport component.Type: ApplicationFiled: January 24, 2011Publication date: July 26, 2012Applicant: XEROX CORPORATIONInventors: Jin Wu, Kenny-tuan T. Dinh, Lanhui Zhang, Marc J. Livecchi, Edward C. Savage, Lin Ma, David M. Skinner, Linda L. Ferrarese
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Patent number: 8227155Abstract: A photoconductor that includes, for example, a substrate, an optional ground plane layer, an undercoat layer thereover, wherein the undercoat layer contains an aminosilane and an epoxysilane, a photogenerating layer, and at least one charge transport layer.Type: GrantFiled: July 29, 2009Date of Patent: July 24, 2012Assignee: Xerox CorporationInventors: Jin Wu, Sherri A Toates, J. Robinson Cowdery-Corvan, Mark Muscato, Richard A Williams, Marc J Livecchi, Linda L Ferrarese
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Patent number: 8227154Abstract: A photoconductor that includes, for example, a substrate, an optional ground plane layer, an undercoat layer thereover wherein the undercoat layer contains an aminosilane and a melamine polymer, a photogenerating layer, and at least one charge transport layer.Type: GrantFiled: July 29, 2009Date of Patent: July 24, 2012Assignee: Xerox CorporationInventors: Jin Wu, Sherri A Toates, J. Robinson Cowdery-Corvan, Mark Muscato, Richard A Williams, Marc J Livecchi, Linda L Ferrarese
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Patent number: 8221946Abstract: A photoconductor that includes, for example, a substrate, an optional ground plane layer, an undercoat layer thereover wherein the undercoat layer contains an aminosilane and a urea resin mixture; a photogenerating layer; and at least one charge transport layer.Type: GrantFiled: July 29, 2009Date of Patent: July 17, 2012Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 8173343Abstract: The present invention provides an electrophotographic photoconductor which includes at least a photosensitive layer and a surface protective layer over a support, wherein the surface protective layer contains a filler, a charge transporting material and a specific compound; and the photosensitive layer contains at least a charge transporting material; the charge transporting material contained in the photosensitive layer has an oxidation potential lower than the oxidation potential of the charge transporting material contained in the surface protective layer and is a specific compound.Type: GrantFiled: April 22, 2009Date of Patent: May 8, 2012Assignee: Ricoh Company, Ltd.Inventor: Hideo Nakamori
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Patent number: 8173342Abstract: A photoconductor that includes a photogenerating layer, and a charge transport layer containing a charge transport component, and a core shell component, and wherein the core is comprised of a metal oxide and the shell is comprised of silica.Type: GrantFiled: June 29, 2009Date of Patent: May 8, 2012Assignee: Xerox CorporationInventors: Jin Wu, Kenny-Tuan T Dinh, Linda L Ferrarese, Marc J Livecchi, Edward C Savage, Michael E Zak
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Patent number: 8168357Abstract: A photoconductor that includes a photogenerating layer and a charge transport layer containing a charge transport component, a fluorinated polymer, and a core shell component, and wherein the core is comprised of a metal oxide and the shell is comprised of silica.Type: GrantFiled: June 29, 2009Date of Patent: May 1, 2012Assignee: Xerox CorporationInventors: Jin Wu, Kenny-Tuan T Dinh, Linda L Ferrarese, Marc J Livecchi, Edward C Savage, Michael E Zak
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Patent number: 8158315Abstract: A photoconductor that includes a supporting substrate, a hole blocking layer, a ground plane layer, a photogenerating layer, and at least one charge transport layer, and where the hole blocking layer includes a SN containing compound and an aminosilane.Type: GrantFiled: July 29, 2009Date of Patent: April 17, 2012Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 8158314Abstract: 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.Type: GrantFiled: February 13, 2009Date of Patent: April 17, 2012Assignee: Konica Minolta Business Technologies, Inc.Inventors: Tomoko Sakimura, Toyoko Shibata, Shinichi Hamaguchi
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Patent number: 8129083Abstract: An electrophotographic photoreceptor is disclosed, comprising on or over an electrically conductive support a photosensitive layer containing a charge generation material and a charge transfer material, wherein the charge generation material is comprised of two or more compounds represented by the following formula wherein X and Y are each an alkyl group or a halogen atom, n is an integer of 1 to 6 and m is an integer of 0 to 6, and wherein the compounds differ in at least one of m and n of the formula.Type: GrantFiled: April 28, 2009Date of Patent: March 6, 2012Assignee: Konica Minolta Business Technologies, Inc.Inventors: Tomoko Sakimura, Toyoko Shibata, Fumitaka Mochizuki, Shinichi Hamaguchi, Masanori Yumita
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Publication number: 20120052428Abstract: 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: ApplicationFiled: August 26, 2010Publication date: March 1, 2012Applicant: XEROX CORPORATIONInventors: Yuhua Tong, Jin Wu, Nancy L. Belknap, Helen R. Cherniack, Marc J. Livecchi
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Patent number: 8119316Abstract: A photoconductor comprising a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the photogenerating layer contains a thiuram sulfide additive.Type: GrantFiled: March 31, 2008Date of Patent: February 21, 2012Assignee: Xerox CorporationInventors: Liang-Bih Lin, Daniel V Levy, Jin Wu, Markus R Silvestri
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Patent number: 8114559Abstract: An electrophotographic photoreceptor including a conductive substrate; and a photosensitive layer located overlying the conductive substrate, including a charge generation material, an electron transport material having a specific formula, and a hole transport material having a specific formula.Type: GrantFiled: May 5, 2008Date of Patent: February 14, 2012Assignee: Ricoh Company, Ltd.Inventors: Keisuke Shimoyama, Eiji Kurimoto
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Patent number: 8110327Abstract: A photoconductor that includes a first layer, a supporting substrate thereover, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, and wherein the first layer is in contact with the supporting substrate on the reverse side thereof, and which first layer includes a fluorinated nano diamond component.Type: GrantFiled: June 29, 2009Date of Patent: February 7, 2012Assignee: Xerox CorporationInventors: Jin Wu, Edward F. Grabowski, Lanhui Zhang, Lin Ma
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Patent number: 8097388Abstract: The presently disclosed embodiments are directed to an improved low wear overcoat for an imaging member having a substrate, a charge transport layer, and an overcoat positioned on the charge transport layer, and a process for preparing the same including combining a binder, a hole transport molecule, a melamine formaldehyde crosslinking agent and an acid catalyst dissolved in an alcohol solvent to form an overcoat solution, and subsequently providing the overcoat solution onto the charge transport layer to form an overcoat layer.Type: GrantFiled: March 14, 2008Date of Patent: January 17, 2012Assignee: Xerox CorporationInventors: Matthew A. Heuft, Nan-Xing Hu, Jennifer A. Coggan, Vladislav Skorokhod, Yvan Gagnon, Sarah Kavassalis
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Publication number: 20120003578Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. In particular, the present embodiments pertain to an improved imaging member comprising a single layer in which the single layer further comprises a photoactive material in a polymeric binder. The embodiments are free of photosensitive pigments and traditional electron transporting small molecules.Type: ApplicationFiled: June 30, 2010Publication date: January 5, 2012Applicant: XEROX CORPORATIONInventors: Richard A. Klenkler, Gregory McGuire, Matthew A. Heuft
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Patent number: 8088540Abstract: An object of the invention is to provide a photoreceptor for electrophotography which has a low residual potential in an initial stage, is inhibited from increasing in residual potential, is prevented from decreasing in charge potential, undergoes little fatigue deterioration even upon repeated use, and is less apt to pose a problem concerning toxicity or environmental pollution. The invention relates to a photoreceptor for electrophotography which has a photosensitive layer containing an aromatic hydroxycarboxylic acid metal complex represented by the following general formula (1): and one or more charge-transporting agents each having an arylaminophenyl group in the molecule.Type: GrantFiled: January 18, 2007Date of Patent: January 3, 2012Assignee: Hodogaya Chemical Co., Ltd.Inventors: Katsumi Abe, Makoto Koike, Atsushi Takesue
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Publication number: 20110318679Abstract: A photoconductor that includes a backing layer, a supporting substrate thereover, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, and wherein the backing layer is in contact with the supporting substrate on the reverse side thereof, and the outermost layer of the backing layer is comprised of a polyurethane comprised of a dendritic polyester polyol and a polyisocyanate.Type: ApplicationFiled: June 25, 2010Publication date: December 29, 2011Applicant: XEROX CORPORATIONInventor: Jin Wu
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Publication number: 20110318677Abstract: 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.Type: ApplicationFiled: November 2, 2010Publication date: December 29, 2011Applicant: FUJI XEROX CO., LTD.Inventors: Takatsugu DOI, Wataru YAMADA, Yuko IWADATE, Katsumi NUKADA
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Publication number: 20110318680Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the photogenerating layer contains a hydroxygallium phthalocyanine, a hydroxyaluminum phthalocyanine, a polymeric binder, and a silanol.Type: ApplicationFiled: June 29, 2010Publication date: December 29, 2011Applicant: XEROX CORPORATIONInventor: Jin Wu
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Patent number: 8076046Abstract: An electrophotographic photoreceptor comprising a conductive support and a photosensitive layer obtained by laminating at least a charge generation layer and a charge transport layer containing a charge transport material in this order on the conductive support, the photosensitive layer being provided with a surface protective layer on the surface thereof, wherein the protective layer contains at least filler particles which exhibit a dispersed state defined by Rf given by the following equations (1) and (2): Rf=(df×b3)/(dm×a3)??(1) 1.0×10?3?Rf?2.Type: GrantFiled: April 2, 2009Date of Patent: December 13, 2011Assignee: Sharp Kabushiki KaishaInventors: Takahiro Kurauchi, Kotaro Fukushima, Akihiro Kondoh
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Publication number: 20110294054Abstract: 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 contains a polyalkylene glycol benzoate and a fluorinated polymer.Type: ApplicationFiled: May 26, 2010Publication date: December 1, 2011Applicant: XEROX CORPORATIONInventors: Jin Wu, Kenny-Tuan T. Dinh, Linda L. Ferrarese, Marc J. Livecchi, Edward C. Savage, Michael E. Zak
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Patent number: 8067138Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and a charge transport layer, and wherein at least one of the charge transport layer and the photogenerating layer contains a pyrrole.Type: GrantFiled: February 27, 2009Date of Patent: November 29, 2011Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 8067139Abstract: A photoconductor that includes, for example, a backing layer, a supporting substrate, a photogenerating layer, and a charge transport layer, and where the outermost layer of the backing layer is comprised of a mixture of a glycoluril resin and a polyol resin.Type: GrantFiled: March 30, 2009Date of Patent: November 29, 2011Assignee: Xerox CorporationInventor: Jin Wu