Triamine, Or Diamine Containing Patents (Class 430/58.75)
  • Patent number: 10185236
    Abstract: An image forming apparatus includes an electrophotographic photoreceptor having a photosensitive layer that includes at least one of a hindered phenol antioxidant and a benzophenone ultraviolet absorber, a charging device, an electrostatic latent image forming device, a developing device, and a transfer device that includes an intermediate transfer belt whose electric field dependence of a volume resistivity is 0.003 or less (log ?·cm)/V in a voltage range of from 500 V to 1,000 V, and transfers a toner image formed on a surface of the electrophotographic photoreceptor onto a recording medium through the intermediate transfer belt and erases charges from the surface of the electrophotographic photoreceptor by applying current to the electrophotographic photoreceptor after the toner image formed on the surface of the electrophotographic photoreceptor has been transferred onto the intermediate transfer belt.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: January 22, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Satoya Sugiura, Shigeru Fukuda, Hideki Okamoto, Masahiko Miyamoto
  • Patent number: 9684253
    Abstract: A triphenylamine derivative is represented by general formula (1). In general formula (1), R1 to R7 each represent, independently of one another, a chemical group selected from the group consisting of a halogen atom, an optionally substituted alkyl group having a carbon number of at least 1 and no greater than 6, an optionally substituted alkoxy group having a carbon number of at least 1 and no greater than 6, and an optionally substituted aryl group having a carbon number of at least 6 and no greater than 12. Also, k, l, m, n, o, and p each represent, independently of one another, an integer of at least 0 and no greater than 4. When any of k, l, m, n, o, or p represents an integer greater than 1, chemical groups R3, R4, R5, R6, or R7 bonded to the same aromatic ring may be the same or different.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: June 20, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Hideki Okada, Kensuke Kojima, Fumio Sugai, Hiroki Tsurumi, Yohei Yamamoto, Eiichi Miyamoto
  • Patent number: 9581941
    Abstract: Provided is a belt for electrophotography which is capable of suppressing the occurrence of adhesion to other members and blocking and which is less liable to cause image defects due to a singular protrusion. The belt for electrophotography comprises a surface layer which comprises heteroaggregate including an inorganic oxide particle having an average primary particle diameter of from 10 to 30 nm and an electroconductive metal oxide particle having an average primary particle diameter of from 5 to 40 nm, and a ten-point average roughness Rzjis of a surface of the surface layer satisfies a relationship: 0.3 ?m?Rzjis?0.7 ?m.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: February 28, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Noriaki Egawa
  • Patent number: 9417539
    Abstract: In an organic photoreceptor that has a protective layer formed on an organic photosensitive layer, the protective layer contains; a cured resin constituent obtained by polymerizing a polymerizable compound in the presence of a radical scavenger represented by the general formula (2); metal oxide microparticles; and a compound represented by the general formula (1) as a charge transport substance, and the relational expression (1): 80/A?B?160/A and the relational expression (2): 12?A?25 are satisfied when the volume ratio (volume %) of the metal oxide microparticles in the protective layer and the volume ratio (volume %) of the compound represented by the general formula (1) in the protective layer are respectively denoted by A and B.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: August 16, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Keiichi Inagaki, Toshiyuki Fujita, Mari Konishi, Masanori Yumita
  • Patent number: 9291923
    Abstract: An electrophotographic photoreceptor includes a cylindrical conductive substrate, an undercoat layer containing a cured product of a resin and a blocked isocyanate and being disposed on the conductive substrate, and a photosensitive layer on the undercoat layer. The degree of curing of the undercoat layer defined by the equation below is about 1.5 or less in both a region A and a region B defined below: Region A (B): A region between a position distant from a first (second) end of the conductive substrate by about ? of a length of the conductive substrate and a position distant from the first (second) end of the conductive substrate by about ? of the length of the conductive substrate Degree of curing=[Amount (g) of blocking agent separated from blocked isocyanate in undercoat layer]/weight of undercoat layer (g)×100.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: March 22, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Hidemi Nukada, Shigeto Hashiba
  • Patent number: 9046798
    Abstract: An electrophotographic imaging member which has improved imaging layer(s) formulated to comprise a charge transport compound and a polymer blended binder to render photoelectrical stability, tune-ability, and surface contact friction reduction for providing service life extension. The polymer blended binder used in the imaging layer(s) is a binary polymer blend binder consisting of: (1) an A-B diblock copolymer and a bisphenol polycarbonate and a low surface energy polysiloxane/polycarbonate random copolymer and (2) an A-B diblock copolymer and a low surface energy graft polysiloxane/polycarbonate copolymer.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: June 2, 2015
    Assignee: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Stephen T. Avery, Jimmy E. Kelly
  • Publication number: 20150147690
    Abstract: A photoconductor that includes, for example, a supporting substrate, an optional anticurl layer, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, a charge transport layer, and an optional protective coating, and where the photogenerating layer contains a polyarylatecarbonate.
    Type: Application
    Filed: November 23, 2013
    Publication date: May 28, 2015
    Applicant: XEROX CORPORATION
    Inventor: Jin Wu
  • Patent number: 9040215
    Abstract: 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: Grant
    Filed: January 29, 2013
    Date of Patent: May 26, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoyuki Shimada, Masayoshi Nomura, Ryota Arai
  • Patent number: 9034544
    Abstract: Provided is a compound represented by the following Formula (I): wherein in Formula (I), F represents a charge transporting skeleton, L represents a divalent linking group including a —(CH2)n—O— group, m represents an integer of from 1 to 8, and n represents an integer of from 3 to 6.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: May 19, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Katsumi Nukada, Wataru Yamada, Tomoya Sasaki, Yuko Iwadate, Kenji Kajiwara
  • Patent number: 9029053
    Abstract: 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: Grant
    Filed: February 7, 2013
    Date of Patent: May 12, 2015
    Assignee: Mitsubishi Chemical Corporation
    Inventor: Akiteru Fujii
  • Publication number: 20150111137
    Abstract: Embodiments pertain to a novel imaging member, namely, an imaging member or photoreceptor comprising an overcoat layer which comprises a soluble filler that improves low surface energy and wear. The soluble filler is a silicone poly(ethylene glycol) ester which improves low surface energy and wear without negatively impacting electrical properties of the overcoat layer.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 23, 2015
    Applicant: XEROX CORPORATION
    Inventors: JIN WU, Kenny-Tuan T. Dinh, Qi Ying Li, Lin Ma, Than Sorn, Marc J. LiVecchi, Linda L. Ferrarese, Robert W. Hedrick
  • Publication number: 20150093695
    Abstract: An electrophotographic photosensitive member includes a laminated body including a conductive support, a first intermediate layer on the conductive support, and a second intermediate layer on the first intermediate layer, the first intermediate layer containing a binder resin and a metal oxide particle whose surface have been treated with an organic compound, and the second intermediate layer containing a cured product having electron transportability, in which the laminated body satisfies the following expression (1): R—nV/R_0V?0.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 2, 2015
    Inventors: Hiroyuki Tomono, Kunihiko Sekido, Atsushi Okuda, Takeshi Murakami
  • Patent number: 8993203
    Abstract: 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: Grant
    Filed: February 7, 2013
    Date of Patent: March 31, 2015
    Assignee: Mitsubishi Chemical Corporation
    Inventor: Akiteru Fujii
  • Patent number: 8970926
    Abstract: A document reading apparatus includes a conveyance unit for conveying a document and a reading unit for reading an image of a document. In the document reading apparatus, the reading unit includes a platen glass. The conveyance unit allows a cleaning member of a cleaning roller to start contact with the front end in a conveyance direction of a document, on the platen glass, upstream in the conveyance direction from a reading position.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: March 3, 2015
    Assignee: Konica Minolta, Inc.
    Inventor: Tatsuya Shinno
  • Publication number: 20150050589
    Abstract: The present invention relates to an electrophotographic photoreceptor comprising a conductive support and at least a photosensitive layer provided thereon, wherein the electrophotographic photoreceptor comprises an outermost layer which contains a specific charge transport substance and a specific compound.
    Type: Application
    Filed: August 6, 2014
    Publication date: February 19, 2015
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Akiteru FUJII, Yuka NAGAO
  • Patent number: 8956792
    Abstract: Provided is an electrophotographic photosensitive member which is excellent in terms of both continuous reduction of contact stress with contact members and the like and potential stability during repeated use. A charge transport layer which serves as a surface layer of an electrophotographic photosensitive member has a matrix-domain structure including a matrix containing a component [?] (polycarbonate resin D having a specific repeating structural unit) and a charge-transporting substance and domains containing a component [?] (polycarbonate resin A having a repeating structural unit including a specific siloxane moiety).
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: February 17, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Okuda, Harunobu Ogaki, Kazunori Noguchi, Takashi Anezaki, Kazuhisa Shida, Shio Murai
  • Patent number: 8889325
    Abstract: The invention provides a means for improving the abrasion resistance and the scratch resistance of a protection layer by increasing the surface hardness of the protection layer of an organic photoreceptor. The invention is an organic photoreceptor constituted by laminating on an electroconductive substrate, a photosensitive layer and a protection layer successively, wherein the protection layer comprises a charge transport substance represented by the following general formula (1), a resin component obtained by curing a curable compound and tin oxide treated with a surface preparation agent having a reactive organic group, and a silica particle: in the general formula (1), R1 and R2 are each independently hydrogen atoms or methyl groups, and R3 is a straight-chain or branched alkyl group having 1 to 5 carbon atoms.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: November 18, 2014
    Assignee: Konica Minolta, Inc.
    Inventors: Mari Konishi, Keiichi Inagaki, Toshiyuki Fujita
  • Patent number: 8883383
    Abstract: A photoreceptor charge transport layer comprising a film-forming material or binder with a fluoroacyl arylamine charge transport molecule is described.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: November 11, 2014
    Assignee: Xerox Corporation
    Inventors: Adrien P Cote, Richard A Klenkler, Amanda L Bongers, Gregory M McGuire
  • Patent number: 8871412
    Abstract: 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: Grant
    Filed: September 13, 2011
    Date of Patent: October 28, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuuji Tanaka, Norio Nagayama, Kazukiyo Nagai
  • Patent number: 8852833
    Abstract: Imaging members having a support, an imaging layer disposed on the support, an outer layer disposed on the imaging layer and fluoropolymer particles imbedded in an outer surface of the outer layer. Image forming apparatuses having such imaging members. Processes for preparing an imaging member for an electrophotographic apparatus, the process involving coating an imaging layer with an outer layer formulation. The imaging layer can be disposed on a support. The outer layer formulation can be dried to form an outer layer disposed on the imaging layer and has an outer surface. Fluoropolymer particles are applied to the outer layer.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: October 7, 2014
    Assignee: Xerox Corporation
    Inventors: Gregory McGuire, Richard Klenkler, Yvan Gagnon, Yu Liu
  • Patent number: 8846280
    Abstract: Provided is a compound represented by the following General Formula (I): wherein in General Formula (I), F represents a charge transporting subunit, L represents a linking group having a valency of (n+1) that is formed by combining two or more kinds selected from a group consisting of an alkylene group, —C?C— (an alkenylene group), —C(?O)—, —N(R)—, —O—, and —S—, and R represents a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group, m represents an integer of from 1 to 6, and n represents an integer of from 2 to 3.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: September 30, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Wataru Yamada, Katsumi Nukada, Yuko Iwadate, Tomoya Sasaki, Kenji Kajiwara
  • Patent number: 8846279
    Abstract: The invention provides a laminate-type electrophotographic photoreceptor for use in a negative charge system, comprising a conductive support, and a photosensitive layer containing a charge generation layer and a charge transport layer, on the conductive support, wherein in addition to a fluorene compound and a diamine compound which are responsible for charge transport, a compound having a specific structure is used in combination.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: September 30, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventor: Akiteru Fujii
  • Patent number: 8841052
    Abstract: In order to provide an electrophotographic photosensitive member with which a ghost is suppressed even under a low temperature and low humidity environment, and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member, the electrophotographic photosensitive member has a support, an undercoat layer formed on the support, and a photosensitive layer formed on the undercoat layer and comprising a charge generating material and a hole transporting material, wherein the undercoat layer comprises a particular amine compound.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: September 23, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kaname Watariguchi, Takeshi Murakami, Masataka Kawahara, Masato Tanaka, Akira Yoshida
  • Patent number: 8808951
    Abstract: 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: Grant
    Filed: June 5, 2013
    Date of Patent: August 19, 2014
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Katsumi Abe, Atsushi Takesue, Takehiro Nakajima, Makoto Koike, Shinya Nagai
  • Patent number: 8795935
    Abstract: An electrophotographic photoconductor having a photosensitive layer and a crosslinked resin surface layer over a support, wherein shapes of concaves and convexes in a surface of the electrophotographic photoconductor are measured by a surface roughness/profile measuring device to obtain one-dimensional data arrays, the arrays are subjected to multiresolution analysis (MRA-1) through wavelet transformation to be separated into six frequency components including HHH, HHL, HMH, HML, HLH and HLL to obtain one-dimensional data arrays, the arrays of the HHL are thinned out to be reduced 1/10 to 1/100, thereby producing one-dimensional data arrays, which are then subjected to multiresolution analysis (MRA-2) through wavelet transformation to be separated into six frequency components including LHH, LHL, LMH, LML, LLH and LLL to thereby obtain 12 frequency components in total; and a center-line average roughness (WRa) of the 12 frequency components satisfies relationship (i) below.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: August 5, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Hidetoshi Kami, Junichi Yamazaki, Yukio Fujiwara, Kazuhiro Egawa
  • Publication number: 20140212800
    Abstract: An electrophotographic photosensitive member, wherein a charge transporting layer is a surface layer, the charge transporting layer contains a specified charge transportable compound and a specified binder resin, and the charge transporting layer satisfies the following expression (4-1).
    Type: Application
    Filed: January 21, 2014
    Publication date: July 31, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Daisuke Miura, Daisuke Tanaka, Kazumichi Sugiyama
  • Patent number: 8786181
    Abstract: The present invention relates to a blend comprising; a) at least one polymer or copolymer or a mixture of a plurality of polymers and/or copolymers which contain a main chain and a side chain, where at least one side chain contains a structural unit of the following formula (I), the symbols and indices used here are as defined below; b) at least one host molecule which has electron- or hole-transporting functionality, and c) at least one emitter molecule.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: July 22, 2014
    Assignees: Merck Patent GmbH, Fraunhofer-Gesellschaft Forschung E.V.
    Inventors: Thomas Eberle, Rémi Manouk Anémian, Manuel Thesen, Hartmut Krueger, Armin Wedel, Beatrice Salert, Stefanie Kreissl
  • Patent number: 8765337
    Abstract: The present invention is to provide a multilayer type electrophotographic photoconductor capable of stably obtaining a high image quality image over a long term by restraining the exposure memory and the photo memory, and an image forming apparatus comprising such a multilayer type electrophotographic photoconductor. A multilayer type electrophotographic photoconductor comprising a charge generating layer containing at least a charge generating agent on a base member directly or via an intermediate layer, and a charge transporting layer containing at least a charge transporting agent and a binder resin formed successively, wherein the light absorption degree at a 680 nm wavelength light beam in the photoconductive layer of the multilayer type electrophotographic photoconductor is of a value of 0.8 or less, and the light absorption degree at a 450 nm wavelength light beam is of a value of 1.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: July 1, 2014
    Assignee: Kyocera Mita Corporation
    Inventors: Keiji Maruo, Junichiro Otsubo, Jun Azuma
  • Patent number: 8748070
    Abstract: Provided is a thiol group-containing charge transporting material represented by the following general formula (1): F-[(G)a1-(X)a2—Y—SH]b??(1) wherein F represents an organic group derived from a charge transporting compound, G represents a divalent organic group having 1 to 5 carbon atoms, X represents a group selected from a —CO—O— group, an —O—CO— group, and an —O— group, Y represents a divalent organic group having 1 to 5 carbon atoms, a1 and a2 each independently represent 0 or 1, and b represents an integer of 1 or more and 6 or less.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: June 10, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Katsumi Nukada, Kenya Sonobe, Wataru Yamada, Takatsugu Doi, Tsuyoshi Miyamoto, Yuko Iwadate
  • Patent number: 8741512
    Abstract: 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: Grant
    Filed: September 12, 2012
    Date of Patent: June 3, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masahiro Iwasaki, Yuko Yamano, Yukimi Kawabata
  • Patent number: 8715896
    Abstract: 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: Grant
    Filed: January 28, 2011
    Date of Patent: May 6, 2014
    Assignee: Xerox Corporation
    Inventor: Jin Wu
  • Publication number: 20140079435
    Abstract: Provided is a reactive compound represented by the following General Formula (I): wherein in General Formula (I), F represents a charge transporting skeleton, D represents a group represented by the following General Formula (III), and m represents an integer of from 1 to 8: wherein in General Formula (III), L1 represents a divalent linking group including one or more —C(?O)—O— groups.
    Type: Application
    Filed: November 21, 2013
    Publication date: March 20, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tomoya SASAKI, Katsumi NUKADA, Wataru YAMADA, Takatsugu DOI, Yuko IWADATE, Kenji KAJIWARA
  • Patent number: 8669028
    Abstract: 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: Grant
    Filed: March 21, 2011
    Date of Patent: March 11, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yukimi Kawabata, Yuko Yamano, Kazuyuki Tada, Kenji Ikeda, Mitsuhide Nakamura
  • Publication number: 20140065533
    Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital printing, apparatuses. More particularly, the embodiments pertain to an improved electrophotographic imaging member comprising a charge transport layer comprising a novel combination of a tetraaryl polycarbonate copolymer binder and perfluorinated fillers. The present charge transport layer provides reduced wear rate and long service life.
    Type: Application
    Filed: August 31, 2012
    Publication date: March 6, 2014
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Kenny-Tuan T. Dinh, Lanhui Zhang, Lin Ma
  • Patent number: 8663882
    Abstract: 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: Grant
    Filed: September 28, 2006
    Date of Patent: March 4, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Teruyuki Mitsumori, Masayuki Hiroi, Hiroaki Takamura
  • Patent number: 8652713
    Abstract: A furan derivative represented by the following General Formula (1): where Ar1 and Ar2 each independently represent an aryl group which may have a substituent, and R1 represents a C1-C6 alkylene group.
    Type: Grant
    Filed: September 6, 2010
    Date of Patent: February 18, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Hongguo Li, Kazukiyo Nagai, Tetsuro Suzuki, Yuuji Tanaka
  • Publication number: 20140045108
    Abstract: 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: Application
    Filed: August 10, 2012
    Publication date: February 13, 2014
    Applicant: XEROX CORPORATION
    Inventors: Sarah J. VELLA, Matthew A. HEUFT, Adrien P. COTE, Paul GERROIR
  • Publication number: 20140023963
    Abstract: 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: Application
    Filed: July 19, 2012
    Publication date: January 23, 2014
    Inventors: Zhang-Lin Zhou, Krzystof Nauka, Lihua Zhao, Hou T. Ng
  • Patent number: 8574796
    Abstract: A photoconductor that includes an optional anticurl layer, optional supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional ground strip segment, an optional adhesive layer, a photogenerating layer, and a charge transport layer that contains an acrylonitrile-butadiene-styrene polymer.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: November 5, 2013
    Assignee: Xerox Corporation
    Inventor: Jin Wu
  • Publication number: 20130252147
    Abstract: An electrophotographic photoreceptor includes a conductive support, and an undercoat layer, a charge generation layer, and a charge transport layer that are provided in this order on the conductive support, wherein the undercoat layer includes at least metallic oxide particles, a reactive acceptor substance including an anthraquinone structure expressed by the following Formula 1, and a binder resin, the charge generation layer includes hydroxygallium phthalocyanine as a charge generation material, and a reflectance of incident light having a wavelength of 780 nm on a surface of the charge generation layer when the charge transport layer is removed is 17% or greater: wherein the anthraquinone structure expressed by Formula 1 is bonded to another structure at a position of *, and thus forms the reactive acceptor substance, and in Formula 1, n1 represents an integer of 1 to 7.
    Type: Application
    Filed: July 30, 2012
    Publication date: September 26, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Satoya SUGIURA, Shigeto HASHIBA, Kazuhiro KOSEKI, Hirofumi NAKAMURA, Kenta IDE, Akihiro NONAKA, Kosuke NARITA, Akihiro KAWASAKI
  • Patent number: 8524433
    Abstract: 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: Grant
    Filed: November 2, 2010
    Date of Patent: September 3, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takatsugu Doi, Wataru Yamada, Yuko Iwadate, Katsumi Nukada
  • Publication number: 20130209929
    Abstract: 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: Application
    Filed: February 7, 2013
    Publication date: August 15, 2013
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Mitsubishi Chemical Corporation
  • Publication number: 20130202994
    Abstract: 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: Application
    Filed: January 29, 2013
    Publication date: August 8, 2013
    Inventors: Tomoyuki SHIMADA, Masayoshi NOMURA, Ryota ARAI
  • Patent number: 8486595
    Abstract: 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-substituted
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: July 16, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Nozomu Tamoto, Mitsuaki Hirose, Hideo Nakamori
  • Patent number: 8486594
    Abstract: 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: Grant
    Filed: January 24, 2007
    Date of Patent: July 16, 2013
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Shinya Nagai, Atsushi Takesue, Makoto Koike, Katsumi Abe, Takehiro Nakajima
  • Publication number: 20130177842
    Abstract: 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: Application
    Filed: September 13, 2011
    Publication date: July 11, 2013
    Inventors: Yuuji Tanaka, Norio Nagayama, Kazukiyo Nagai
  • Patent number: 8481235
    Abstract: 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: Grant
    Filed: August 26, 2010
    Date of Patent: July 9, 2013
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Jin Wu, Nancy L. Belknap, Helen R. Cherniack, Marc J. Livecchi
  • Patent number: 8475982
    Abstract: 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: Grant
    Filed: March 27, 2006
    Date of Patent: July 2, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masahiro Iwasaki, Katsumi Nukada, Wataru Yamada, Kenji Yao
  • Patent number: 8465888
    Abstract: 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: Grant
    Filed: January 27, 2011
    Date of Patent: June 18, 2013
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Jin Wu, Edward F. Grabowski, Marc J. Livecchi
  • Patent number: 8460844
    Abstract: 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: Grant
    Filed: September 27, 2011
    Date of Patent: June 11, 2013
    Assignee: Xerox Corporation
    Inventors: Matthew A. Heuft, Adrien P. Cote, Greg McGuire, Nan-Xing Hu, Yvan Gagnon