1,1' Biphenyl 4,4' Diamine (e.g., Benzidine, Etc.) Patents (Class 430/58.8)
  • Patent number: 9964869
    Abstract: A triarylamine derivative represented by general formula (1) below. In the general formula (1), R1, R2, R4, R5, R6, R7, R8, and R9 each represent, independently from one another, a hydrogen atom, an optionally substitute 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, or an optionally substituted aryl group having a carbon number of at least 6 and no greater than 14, R3 represents an alkyl group having a carbon number of at least 1 and no greater than 4, X represents an alkylene group having a carbon number of at least 1 and no greater than 6 or an oxygen atom, and n represents an integer of 1 to 3.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: May 8, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Kensuke Okawa, Hideki Okada, Jun Azuma, Fumio Sugai, Kensuke Kojima
  • Patent number: 9651879
    Abstract: A charge-transporting layer as the surface layer of an electrophotographic photosensitive member contains a charge-transporting substance, and contains, as resins, a resin A having specific structural units and a polycarbonate resin D having specific structural units. The charge-transporting layer has, in a matrix containing the charge-transporting substance and the polycarbonate resin D, domains each containing the resin A.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: May 16, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Akihiro Maruyama, Harunobu Ogaki, Yuki Yamamoto
  • Patent number: 9541850
    Abstract: A photosensitive layer includes a gallium phthalocyanine crystal and 0.2% by mass or more and 20% by mass or less of an arene compound based on the gallium phthalocyanine crystal, and the arene compound has a halogen atom or a halogen-substituted alkyl group, and a sulfonic acid group or a sulfonic acid salt group, as a substituent.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: January 10, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tsutomu Nishida, Masato Tanaka, Masataka Kawahara
  • Patent number: 9411251
    Abstract: Disclosed herein is a photoconductor including a substrate, a photogenerating layer and a charge transport layer. The charge transport layer includes a hole transport molecule of N4,N4?-bis(4-((E)-4,4-diphenylbuta-1,3-dien-1-yl)phenyl)-N4,N4?-di-p-tolyl-[1,1?-biphenyl]-4,4?-diamine and a binder. The weight percent of the charge transport layer includes N4,N4?-bis(4-((E)-4,4-diphenylbuta-1,3-dien-1-yl)phenyl)-N4,N4?-di-p-tolyl-[1,1?-biphenyl]-4,4?-diamine at from about 50 to about 70.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: August 9, 2016
    Assignee: Xerox Corporation
    Inventors: Jennifer A. Coggan, Matthew A. Heuft, Gregory M. McGuire, Adrien P. Cote, Jin Wu, Kenny Tuan Tran Dinh
  • Patent number: 9389522
    Abstract: An electrophotographic photosensitive member includes a charge transport layer containing (?) a charge transporting compound, (?) a binding resin in a proportion in the range of 50% by mass to 200% by mass relative to the mass of the charge transporting compound, (?) a compound being at least one of xylene and toluene with a content in the range of 0.01% by mass to 2.00% by mass relative to the total mass of the charge transport layer, and (?) a cycloalkanone with a content in the range of 0.01% by mass to 1.20% by mass relative to the total mass of the charge transport layer.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: July 12, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji Takahashi, Naoaki Ichihashi, Kan Tanabe
  • Patent number: 9382384
    Abstract: Disclosed herein are a ?-polyoxo crosslinked phthalocyanine compound, a preparing method thereof, and a near infrared ray absorbing and reflecting composition using the same, and more particularly, a ?-polyoxo crosslinked phthalocyanine compound having high absorption at a wavelength of 800 to 950 nm and high reflectance at a wavelength of 1200 nm or more, a preparing method of a ?-polyoxy crosslinked phthalocyanine compound simultaneously having near infrared ray absorption and reflection properties as described above, and a near infrared ray absorbing and reflecting composition using the ?-polyoxo crosslinked phthalocyanine compound. According to the exemplary embodiment of the present invention, there is provided a ?-polyoxo crosslinked molybdenum phthalocyanine compound capable of absorbing and reflecting near infrared ray at the same time.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: July 5, 2016
    Assignee: Nano CMS Co., Ltd.
    Inventors: Shi Surk Kim, In Ja Lee, Je Young Park, Woo Sung Lim
  • Patent number: 9353065
    Abstract: The present invention relates to compounds of the formula (I), a process for their preparation and their use in organic light emitting diodes (OLEDs), especially as host for phosphorescent compounds. The hosts may function with phosphorescent materials to provide improved efficiency, stability, manufacturability, or special characteristics of electroluminescent devices.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: May 31, 2016
    Assignee: BASF SE
    Inventors: Thomas Schäfer, Peter Murer, Frédérique Wendeborn, Beat Schmidhalter, Kristina Bardon, Andrea Ricci, Joern Pommerehne
  • Patent number: 9341963
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; an organic photosensitive layer that is provided on the conductive substrate; and an inorganic protective layer that is provided on the organic photosensitive layer so as to be in contact with a surface of the organic photosensitive layer, wherein the organic photosensitive layer includes at least a charge transport material and silica particles in a region on the surface side in contact with the inorganic protective layer.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: May 17, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masaki Hirakata, Hideya Katsuhara, Takeshi Iwanaga, Nobuyuki Torigoe, Takashi Imai, Tomoya Sasaki, Shigeto Hashiba, Kenta Ide
  • Patent number: 9316933
    Abstract: An electrophotographic photoreceptor having a photosensitive layer formed on a conductive substrate, wherein the photosensitive layer contains oxygen-containing fluorinated fine particles in a surface layer thereof, and the oxygen-containing fluorinated fine particles have an oxygen composition ratio of 0.9 to 3.0% by atom based on the whole composition of the fine particles according to an X-ray fluorescence composition analysis.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: April 19, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kotaro Fukushima, Kimiko Kumazawa, Koichi Toriyama, Takahiro Kurauchi, Tomoko Kanazawa, Chikako Iibachi, Rikiya Matsuo
  • Patent number: 9274442
    Abstract: Provided an electrophotographic image forming apparatus comprising an electrophotographic photosensitive member and a charging member. The electrophotographic photosensitive member includes a charge transport layer as a surface layer having a matrix-domain structure including specific resins. The charging member comprises an electro-conductive substrate, and an electro-conductive elastic layer. The electro-conductive elastic layer comprises a binder, and holding a bowl-shaped resin particle having an opening, so that at least a part of the bowl-shaped resin particle is exposed, and the charging member has a concavity derived from the opening of the bowl-shaped resin particle on the surface thereof, and a protrusion derived from an edge of the opening of the bowl-shaped resin particle on the surface thereof.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: March 1, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Taichi Sato, Tomohito Taniguchi, Noboru Miyagawa, Takehiko Aoyama, Atsushi Uematsu, Masahiro Watanabe, Yuki Yamamoto, Harunobu Ogaki, Akihiro Maruyama, Takashi Anezaki, Daisuke Miura, Hirofumi Kumoi
  • Patent number: 9213229
    Abstract: A positively chargeable electrophotographic photosensitive member has a photosensitive layer. The photosensitive layer at least includes the following layers layered in the stated order: (I) a charge transport layer at least containing a hole transport material and a binder resin; and (II) a charge generating-and-transporting layer at least containing a charge generating material, an electron transport material, a hole transport material, and a binder resin all within this layer. The binder resin contained in the charge transport layer is different from the binder resin contained in the charge generating-and-transporting layer, and either of the binder resins contains a polyvinyl acetal resin.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: December 15, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Yuko Iwashita, Yukimasa Watanabe, Junichiro Otsubo, Kazuaki Ezure, Kazutaka Sugimoto
  • Patent number: 9188888
    Abstract: A charge-transporting layer, which is a surface layer of an electrophotographic photosensitive member, has a matrix-domain structure having a matrix containing constituent ? (a polycarbonate resin having a predetermined repeating structural unit) and a charge-transporting substance, and a domain containing constituent ? (a polycarbonate resin having a repeating structural unit having a predetermined siloxane moiety).
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: November 17, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Okuda, Shio Murai, Kazunori Noguchi, Harunobu Ogaki, Kazuhisa Shida, Takashi Anezaki
  • Patent number: 9091949
    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 consisting of: (1) an A-B diblock copolymer and a bisphenol polycarbonate and (2) an A-B diblock copolymer and a bisphenol polycarbonate plus a slippery nano POSS particle dispersion in its material matrix.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: July 28, 2015
    Assignee: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Stephen T. Avery, Jimmy E. Kelly, Mark Muscato
  • 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: 9017907
    Abstract: The presently disclosed embodiments relate in general to flexible electrophotographic imaging members, such as layered photoreceptor structural simplification, and material reformulation for making and using the same. More particularly, the embodiments pertain to the incorporation of a plasticizer or mixture of plasticizers into the charge transport layer for rendering flatness such that an anticurl back coating is no longer needed to counteract and control the layered photoreceptor curling.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: April 28, 2015
    Assignee: Xerox Corporation
    Inventor: Robert C. U. Yu
  • 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
  • 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
  • Publication number: 20150086914
    Abstract: Flexible imaging members in electrophotography which have an improved plasticized charge transport layer formulation. The resulting imaging member is resistant to chemical contaminants, photoelectrically stable, fatigue cracking suppression, and has a simplified material structure which is curl-free without the need of an anticurl back coating layer. Process for making and using the member are also disclosed.
    Type: Application
    Filed: September 20, 2013
    Publication date: March 26, 2015
    Applicant: XEROX CORPORATION
    Inventor: ROBERT C.U. YU
  • Publication number: 20150079511
    Abstract: A photoconductor that includes, for example, a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, an optional anticurl layer, a photogenerating layer, and a charge transport layer comprised of a first charge transport compound, a second dissimilar charge transport compound, a fluoropolymer and a polyarylatecarbonate.
    Type: Application
    Filed: September 14, 2013
    Publication date: March 19, 2015
    Applicant: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan T. Dinh, Lanhui Zhang, Lin Ma, Nancy L. Belknap, Helen R. Cherniack
  • Publication number: 20150064614
    Abstract: 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: Application
    Filed: September 4, 2013
    Publication date: March 5, 2015
    Applicant: XEROX CORPORATION
    Inventors: Gregory McGuire, Sarah J. Vella, Adrien P. Cote, Yvan Gagnon, Brynn Dooley
  • 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
  • Publication number: 20150037715
    Abstract: Disclosed herein is a photoconductor including a substrate, a photogenerating layer and a charge transport layer. The charge transport layer includes a hole transport molecule of N4,N4?-bis(4-((E)-4,4-diphenylbuta-1,3-dien-1-yl)phenyl)-N4,N4?-di-p-tolyl-[1,1?-biphenyl]-4,4?-diamine and a binder. The weight percent of the charge transport layer includes N4,N4?-bis(4-((E)-4,4-diphenylbuta-1,3-dien-1-yl)phenyl)-N4,N4?-di-p-tolyl-[1,1?-biphenyl]-4,4?-diamine at from about 50 to about 70.
    Type: Application
    Filed: August 1, 2013
    Publication date: February 5, 2015
    Applicant: Xerox Corporation
    Inventors: Jennifer A. Coggan, Matthew A. Heuft, Gregory M. McGuire, Adrien P. Cote, Jin Wu, Kenny Tuan Tran Dinh
  • Publication number: 20150030974
    Abstract: Described herein is a photoreceptor having a substrate, a charge generating layer, a charge transport layer comprising N,N,N?N?-tetra(4-methylphenyl)-(1,1?-biphenyl)-4,4?-diamine having a purity of from about 95 percent to about 100 percent, and a protective overcoat layer. The N,N,N?N?-tetra(4-methylphenyl)-(1,1?-biphenyl)-4,4?-diamine has been treated by a purification process two or more times.
    Type: Application
    Filed: July 23, 2013
    Publication date: January 29, 2015
    Applicant: XEROX CORPORATION
    Inventors: Gregory M. McGuire, Jennifer A. Coggan, Alan E.J. Toth, Nan-Xing Hu, Yu Liu
  • Patent number: 8883384
    Abstract: Embodiments pertain to a novel imaging member, namely, an imaging member or photoreceptor comprising a binderless overcoat layer which exhibits substantially improved electrical performance, such as low residual potential and good electrical cyclic stability. The overcoat layer of the present embodiments is formed from a formulation comprising a small transport molecule, a crosslinking agent, an acid catalyst and a solvent.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: November 11, 2014
    Assignee: Xerox Corporation
    Inventors: Kenny-tuan T. Dinh, Edward C. Savage, Marc J. LiVecchi, Robert W. Hedrick, Linda L. Ferrarese, Sherri A. Toates, Stacy J. Kowsz
  • 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: 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: 8815479
    Abstract: 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 a component [?] and a component [?] (charge-transporting substances having specific structures), and a domain comprising a component [?](resin [?1], or resin [?1] and resin [?2]).
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: August 26, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhisa Shida, Atsushi Okuda, Kazunori Noguchi, Takashi Anezaki, Harunobu Ogaki, Shio Murai
  • Patent number: 8815481
    Abstract: An imaging member includes a supporting substrate, an optional hole blocking layer, an optional adhesive layer, an imaging layer, and an overcoat layer, wherein the overcoat layer comprises a fluorosulfonamide. The overcoat layer can further include a charge transport compound and a melamine resin.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: August 26, 2014
    Assignee: Xerox Corporation
    Inventors: Jin Wu, David Skinner, Than Sorn, Lin Ma, Lanhui Zhang, Marissa Anne Linne, J. Robinson Cowdery-Corvan, Kenny-tuan T. Dinh
  • Patent number: 8785090
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; and a single-layer photosensitive layer that is provided on the conductive substrate and includes a binder resin, at least one kind of charge generation material selected from hydroxygallium phthalocyanine pigments and chlorogallium phthalocyanine pigments, a hole transport material represented by Formula (1), and an electron transport material represented by Formula (2):
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: July 22, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yuko Yamano, Shinya Yamamoto, Masahiro Iwasaki, Takayuki Yamashita, Yohei Saito, Jiro Korenaga
  • Patent number: 8785091
    Abstract: A photoconductor that includes, for example, a supporting substrate, 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 charge transport layer contains a mixture of a charge transport component and a polyarylatecarbonate.
    Type: Grant
    Filed: April 13, 2013
    Date of Patent: July 22, 2014
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan T Dinh, Terry L Street, Robert W Hedrick, Linda L Ferrarese, Than Sorn, Lanhui Zhang, Lin Ma, Stanley J Pietrzykowski, Jr.
  • Patent number: 8775121
    Abstract: The present embodiments are generally directed to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. More particularly, the embodiments pertain to an electrophotographic imaging member having a charge transport layer in which a charge transport molecule (CTM) concentration gradient is formed through a single coating pass using only a single charge transport layer solution, and time-of-flight based methods of measuring the CTM gradient through the thickness of the charge transport layer.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: July 8, 2014
    Assignee: Xerox Corporation
    Inventors: Richard A. Klenkler, Gregory McGuire
  • Patent number: 8765218
    Abstract: The presently disclosed embodiments are directed generally to methods for making the core-shell fluorinated particles which are incorporated into the overcoat layers of an electrophotographic imaging member to reduce torque and cleaning failures during the photoreceptor cleaning process. The core-shell fluorinated particles are core-shell fluorinated nano- or micro-particles encapsulated in a melamine shell. The present embodiments also pertain to processes for making the overcoat layer comprising the core-shell fluorinated particles.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: July 1, 2014
    Assignee: Xerox Corporation
    Inventors: Woo Soo Kim, Nan-Xing Hu, Jennifer A. Coggan, Yvan Gagnon
  • Patent number: 8765340
    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: Grant
    Filed: August 10, 2012
    Date of Patent: July 1, 2014
    Assignee: Xerox Corporation
    Inventors: Sarah J. Vella, Matthew A. Heuft, Adrien P. Cote, Paul Gerroir
  • 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: 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: 20140087298
    Abstract: An imaging member includes a supporting substrate, an optional hole blocking layer, an optional adhesive layer, an imaging layer, and an overcoat layer, wherein the overcoat layer comprises a fluorosulfonamide. The overcoat layer can further include a charge transport compound and a melamine resin.
    Type: Application
    Filed: September 26, 2012
    Publication date: March 27, 2014
    Applicant: XEROX CORPORATION
    Inventors: Jin WU, David SKINNER, Than SORN, Lin MA, Lanhui ZHANG, Marissa Anne LINNE, J. Robinson COWDERY-CORVAN, Kenny-tuan T. DINH
  • Publication number: 20140065532
    Abstract: The present invention is to provide a charge transport substance having high resistance to stress within electrophotographic processes, an electrophotographic photoreceptor which has excellent high-speed responsiveness, shows a sufficient residual potential, and has high resistance to stress within electrophotographic processes, an electrophotographic cartridge, and an image-forming apparatus. The invention provides a charge transport substance having a specific structure. The invention further provides an electrophotographic photoreceptor including a photosensitive layer which contains the charge transport substance having a specific structure, an electrophotographic cartridge, and an image-forming apparatus, equipped with this electrophotographic photoreceptor.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 6, 2014
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Mitsuo WADA
  • 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
  • Publication number: 20140004453
    Abstract: 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: Application
    Filed: June 28, 2013
    Publication date: January 2, 2014
    Inventors: Kenichi Kaku, Michiyo Sekiya, Kunihiko Sekido, Atsushi Okuda, Nobuhiro Nakamura, Yota Ito, Hiroyuki Tomono, Yuka Ishiduka
  • Patent number: 8609310
    Abstract: 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: Grant
    Filed: August 14, 2009
    Date of Patent: December 17, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hitoshi Takimoto, Akira Hirano, Takatsugu Doi, Wataru Yamada, Katsumi Nukada
  • Publication number: 20130288169
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; and a single-layer photosensitive layer that is provided on the conductive substrate and includes a binder resin, at least one kind of charge generation material selected from hydroxygallium phthalocyanine pigments and chlorogallium phthalocyanine pigments, a hole transport material represented by Formula (1), and an electron transport material represented by Formula (2):
    Type: Application
    Filed: November 14, 2012
    Publication date: October 31, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuko YAMANO, Shinya YAMAMOTO, Masahiro IWASAKI, Takayuki YAMASHITA, Yohei SAITO, Jiro KORENAGA
  • Patent number: 8563204
    Abstract: 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: Grant
    Filed: June 29, 2010
    Date of Patent: October 22, 2013
    Assignee: Xerox Corporation
    Inventor: Jin Wu
  • Patent number: 8524428
    Abstract: An electrophotographic photoreceptor includes: a conductive substrate; a photosensitive layer including a charge-generating layer containing a charge-generating material and a charge-transporting layer containing a charge-transporting material, the charge-transporting layer having a hole mobility of about 5.0×10?6 (cm2/V·sec) or less at an electric field of 2 V/cm; and an overcoat layer that is provided on the photosensitive layer and contains a cured material of a charge-transporting material, wherein relational expression (1) Ip(OCL)>Ip(CTL)>Ip(CGL) is satisfied wherein Ip(CGL) represents an ionization potential (eV) of the charge-generating material contained in the charge-generating layer; Ip(CTL) represents an ionization potential (eV) of the charge-transporting material contained in the charge-transporting layer; and Ip(OCL) represents an ionization potential (eV) of the charge-transporting material contained in the overcoat layer.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: September 3, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Hirofumi Nakamura
  • Publication number: 20130209928
    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: Application
    Filed: February 7, 2013
    Publication date: August 15, 2013
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Mitsubishi Chemical Corporation
  • 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
  • Patent number: 8507161
    Abstract: A photoconductor containing an optional supporting substrate layer, a photogenerating layer, a charge transport layer, and a top overcoat layer of a phenolic compound, a phosphite compound, an optional charge transport compound, an optional melamine resin, an optional acrylated polyol, and an optional catalyst.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: August 13, 2013
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan T. Dinh, Terry L. Street, Robert W. Hedrick, Linda L. Ferrarese, Brian P. Gilmartin
  • Publication number: 20130202995
    Abstract: The presently disclosed embodiments relate generally to a flexible imaging member having an anti-curl back coating comprising a liquid plasticizer, and the imaging member is substantially flat.
    Type: Application
    Filed: February 6, 2012
    Publication date: August 8, 2013
    Applicant: XEROX CORPORATION
    Inventors: Robert C.U. Yu, Edward F. Grabowski