Radiation-sensitive Composition Or Product Patents (Class 430/56)
  • Patent number: 9783491
    Abstract: A quinone derivative represented by general formula (1) where, in the general formula (1), chemical groups R1 each represent, independently of one another, an alkyl group, a cycloalkyl group, an alkoxy group, an aralkyl group, or an aryl group, and R2 represents an alkyl group, an aralkyl group, a cycloalkyl group, an alkoxy group, an aryl group, or a heterocyclic group.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: October 10, 2017
    Assignee: KYOCERA Documents Solutions Inc.
    Inventors: Hideki Okada, Fumio Sugai, Kensuke Kojima
  • Patent number: 9783493
    Abstract: A quinone derivative represented by general formula (1), where, in the general formula (1), R1 and R2 each represent, independently of one another, an alkyl group, a cycloalkyl group, an alkoxy group, an aralkyl group, or an aryl group, R3 represents a halogen atom, an alkyl group, an alkoxy group, or an aryl group, m represents an integer of no less than 0 and no greater than 4, and when m represents an integer of no less than 2, chemical groups R3 may be the same as or different from one another.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: October 10, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Hideki Okada, Fumio Sugai, Kensuke Kojima
  • Patent number: 9766560
    Abstract: An electrophotographic photoreceptor for use in an image forming apparatus having a proximity charge-type charging unit includes a conductive support and at least photosensitive layer and surface layer laminated in order on the conductive support, wherein the surface layer includes (A) a charge transport material, (B) a cured product of a composition containing a polymerizable compound and inorganic fine particles, and (C) organic fine particles, and the inorganic fine particles contain a metal oxide, has a surface treated with a surface treatment agent having a reactive organic group, and has a volume resistivity of 1.2×1011?·cm or more.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: September 19, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Masahiko Kurachi
  • Patent number: 9732296
    Abstract: A composition comprising a fuel and at least one compound characterized by Formula I: wherein X is carbon, oxygen, or sulfur; R1 and R2 each independently are hydrogen, a C1 to C20 alkyl, or a C6 to C10 aryl; R3 and R3? each independently are hydrogen or a C1 to C4 alkyl; R4 and R4? each independently are hydrogen, a C1 to C4 alkyl, a C4 to C10 cycloalkyl, or a C6 to C10 aryl; R5 and R5? each independently are a C4 to C10 alkyl; R6 and R6? each independently are hydrogen or a C1 to C6 alkyl; and R7 and R7? each independently are hydrogen or a C1 to C4 alkyl; and wherein the compound of Formula I when subjected to GC-MS using electron ionization at greater than about 70 eV produces at least one ion having a mass-to-charge ratio of from 300 to 600.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: August 15, 2017
    Assignee: Authentix, Inc.
    Inventors: Jeffrey L. Conroy, Philip B. Forshee, John-Christopher Boyer
  • Patent number: 9708127
    Abstract: A continuous transporting belt has a multilayered structure. The multilayered structure includes at least a first layer that forms a running side, and at least a second layer that forms a load-bearing side. At least one of the layers is connected by an adhesion layer to at least one third layer that forms at least one of a tension member and a further layer. The adhesion layer contains a composition having a first portion of an adhesive and a second portion of a lubricant.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: July 18, 2017
    Assignee: FORBO SIEGLING GMBH
    Inventors: Torsten Buch, Benjamin Kabore, Claudius Hayduk
  • Patent number: 9709908
    Abstract: An electrophotographic photosensitive member includes an undercoat layer, the undercoat layer having a volume resistivity of from 1×1010 ?·cm to 1×1013 ?·cm, the undercoat layer contains (A) a zinc oxide particle and (B) at least one particle selected from titanium oxide particles coated with tin oxide doped with any one of zinc, aluminum, fluorine, tungsten, niobium, tantalum, and phosphorus and a titanium oxide particle coated with oxygen deficient tin oxide, and the content of the particle (B) in the undercoat layer is from 3% by mass to 20% by mass based on the content of the particle (A).
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: July 18, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Daisuke Tanaka, Kazumichi Sugiyama, Takeshi Murakami, Daisuke Kawaguchi
  • Patent number: 9696642
    Abstract: An electrophotographic photoreceptor having excellent cleaning performance and high durability for a long time and an electrophotographic imaging apparatus employing the electrophotographic photoreceptor are provided. The electrophotographic photoreceptor includes a photosensitive layer and a protective layer sequentially formed in this stated order on a conductive support. The protective layer includes a metal oxide surface-treated with a phosphorous-containing compound, wherein the metal oxide includes at least one selected from a group consisting of tin oxide, zinc oxide, and titanium oxide. The phosphorous-containing compound is a polymer including a phosphorus-oxoacid moiety reacting with the metal oxide, a photo-reactive moiety, and a lubricative moiety including at least one selected from a group consisting of fluorine and silicon at side chains.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: July 4, 2017
    Assignee: S-PRINTING SOLUTION CO., LTD.
    Inventors: Mami Adachi, Manabu Takezawa, Hiroshi Miyao
  • Patent number: 9645515
    Abstract: An electrophotographic photosensitive member capable of outputting an image with suppressed positive ghosting, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member are provided. The electrophotographic photosensitive member has a photosensitive layer including a phthalocyanine crystal in which the compound represented by the formula (1) is contained, wherein the content of the compound represented by the formula (1) is 0.1% by mass or more and 1.7% by mass or less based on the phthalocyanine crystal.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: May 9, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Junpei Kuno, Tsutomu Nishida, Masato Tanaka, Masataka Kawahara, Kaname Watariguchi
  • Patent number: 9639010
    Abstract: Disclosed is an electrophotographic photoreceptor including a conductive support, a photosensitive layer on the conductive support and a surface layer on the photosensitive layer. The surface layer includes a cured resin prepared by polymerization of a compound having two or more radically polymerizable functional groups per molecule, the cured resin containing an organic resin fine particle and a metal oxide fine particle, and the organic resin fine particle comprising a resin containing a structural unit derived from at least one of melamine and benzoguanamine, the organic resin fine particle having a number average primary particle size of 0.01 to 3.00 ?m.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: May 2, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Hokuto Hatano, Kazunori Kurimoto, Seisuke Maeda, Hiroki Takao
  • Patent number: 9625852
    Abstract: A cleaning unit for an image forming apparatus includes a frame; a cleaning blade; a first seal sealing between the frame and the blade, provided by injection molding into the frame adjacent to an axial end; and a second seal between the frame and the drum, provided opposing to the free end portion adjacent to the axial end portion, and the second seal having a L-like configuration with projection extending in a direction crossing with the axial direction outwardly beyond an end surface of the blade, wherein the first seal includes a base portion provided at a position inside of the end surface and extending in the crossing direction and an extension extending from the base portion in the axial direction, the extension having a free end portion compressed by the projection to seal between the projection and the frame.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: April 18, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroki Shimizu, Susumu Nittani, Keisuke Nomura, Hideki Kakuta
  • Patent number: 9601325
    Abstract: Aromatic resin polymers and compositions containing them are useful as underlayers in semiconductor manufacturing processes.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: March 21, 2017
    Assignees: Rohm and Haas Electronic Materials LLC, Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Emad Aqad, Mingqi Li, Shintaro Yamada, Sung Wook Cho
  • Patent number: 9557662
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a single-layer photosensitive layer which is provided on the conductive substrate and contains a binder resin, at least one charge generating material selected from a hydroxygallium phthalocyanine pigment and a chlorogallium phthalocyanine pigment, a first electron transporting material defined in the specification, a second electron transporting material defined in the specification, and a hole transporting material defined in the specification, wherein a total content of all electron transporting materials is greater than or equal to 4 parts by weight with respect to 100 parts by weight of a total solid content of the photosensitive layer, and an average loss elastic modulus E? of the photosensitive layer, which is obtained by measuring dynamic viscoelasticity at a temperature of from 35° C. to 50° C. and a frequency of 0.5 Hz, is less than or equal to 1.000×106.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: January 31, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Keisuke Kusano, Jiro Korenaga, Yoshifumi Shoji, Yukimi Kawabata
  • Patent number: 9551945
    Abstract: An electrophotographic photoreceptor includes a conductive substrate, and a single-layer type photosensitive layer that contains a binder resin, a charge generating material, a hole transporting material, and an electron transporting material, wherein a content of the charge generating material in the photosensitive layer is 0.5% by weight or more and less than 2.0% by weight and the charge generating material satisfies expression (1): 30?a/b, wherein a represents the number of the charge generating materials per unit cross-sectional area in a region ranging from the surface side of the film thickness of the photosensitive layer to a point corresponding to ?, and b represents the number of the charge generating materials per unit cross-sectional area in a region ranging from the conductive substrate side of the film thickness of the photosensitive layer to a position corresponding to ?, provided that a case where b is 0 is included.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: January 24, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yukimi Kawabata, Kazuyuki Tada, Jiro Korenaga, Yasuhiro Niida
  • Patent number: 9519232
    Abstract: An electrophotographic photosensitive member includes a support and a photosensitive layer on the support, and the photosensitive layer contains a hydroxygallium phthalocyanine crystal having peaks at Bragg angles 2?±0.2° of 6.9°, 7.7°, 16.4°, 24.4°, and 26.5° in CuK? X-ray diffraction.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: December 13, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Kawahara, Tsutomu Nishida, Junpei Kuno, Masato Tanaka, Kaname Watariguchi
  • Patent number: 9507283
    Abstract: Provided is an electrophotographic photosensitive member, including a charge-transporting layer containing a charge-transporting substance, and containing, as resins, a polycarbonate resin A having specific structural units and a resin D having a specific structural unit, in which the charge-transporting layer has, in a matrix containing the charge-transporting substance and the resin D, domains each containing the polycarbonate resin A.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: November 29, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Akihiro Maruyama, Harunobu Ogaki, Yuki Yamamoto
  • Patent number: 9499342
    Abstract: A belt feeding unit includes a rotatable belt, a first stretching roller for stretching the belt, and a second stretching roller including a stretching portion for stretching the belt. A first member is provided at one end portion of the stretching portion with respect to a widthwise direction of the belt and perpendicular to a movement direction of the belt. The first member is movable relative to the stretching portion to change a position of one end of the stretching portion at the one end portion. In addition, a second member is provided at the other end portion of the stretching portion and is movable relative to the stretching portion to change a position of the other end of the stretching portion at the other end portion.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: November 22, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Atsushi Ogata
  • Patent number: 9494883
    Abstract: An electrophotographic photoreceptor that satisfies excellent transparency, abrasion resistance, and electrophotographic properties (including sensitivity and residual potential after light irradiation) all together is provided. Specifically, an electrophotographic photoreceptor and a resin composition that include therein (1) a polycarbonate resin (A) having a structural unit represented by the following formula (I) and (2) at least one selected from a polycarbonate resin (B) synthesized from a source material that includes therein a bisphenol represented by the following formula (II) and a polyester resin (B?) synthesized from a source material that includes therein a bisphenol represented by the following formula (II). In formulas (I) and (II), each of Ra, Rb, Rc, Rd, Re, and Rf represents, independently from one another, a substituted or non-substituted alkyl group, a substituted or non-substituted cycloalkyl group, or a substituted or non-substituted phenyl group.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: November 15, 2016
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Hironobu Morishita, Takaaki Hikosaka
  • Patent number: 9459544
    Abstract: The present invention provides a novel hydroxygallium phthalocyanine crystal and an electrophotographic photosensitive member capable of outputting an image with few failures due to a ghost phenomenon not only in normal-temperature, normal-humidity environments but also even in low-temperature, low-humidity environments. The hydroxygallium phthalocyanine crystal has peaks at Bragg angles 2?±0.2° of 7.5°, 9.9°, 25.2°, and 28.3° as determined by X-ray diffraction with Cu K? radiation. The intensity of the peak at a Bragg angle 2?±0.2° of 9.9° is higher than the intensity of the peak at a Bragg angle 2?±0.2° of 7.5°.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: October 4, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Tanaka, Tsutomu Nishida
  • Patent number: 9459543
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a singlelayer type photosensitive layer which is provided on the conductive substrate and contains a binder resin, a charge generating material, a hole transporting material, an electron transporting material represented by the formula (1), and a fluorenone compound represented by the formula (2): wherein R11, R12, R13, R14, R15, R16, R17 each independently represent a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aryl group, or an aralkyl group, and R18 represents an alkyl group, an aryl group, or an aralkyl group; and wherein R21, R22, R23, R24, R26, R27, and R28 each independently represent a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aryl group, or an aralkyl group, and R25 represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aryl group, or an aralkyl group.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: October 4, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Jiro Korenaga, Yoshifumi Shoji
  • Patent number: 9429859
    Abstract: An electrophotographic photosensitive member includes a photosensitive layer that contains a charge generating material, a hole transport material, a binder resin, and a plasticizer. The hole transport material contains a triarylamine derivative represented by General Formula (1) below. The plasticizer contains at least one of a compound represented by General Formula (2a) and a compound represented by General Formula (2b) below.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: August 30, 2016
    Assignee: KYOCERA Document Solutions, Inc.
    Inventors: Jun Azuma, Hideki Okada
  • Patent number: 9405206
    Abstract: Provided is an electrophotographic photosensitive member capable of suppressing a voltage fluctuation and occurrence of a black spot under a high-temperature/high-humidity environment. The electrophotographic photosensitive member includes: a support; a first intermediate layer formed on the support; a second intermediate layer formed on the first intermediate layer; and a photosensitive layer formed on the second intermediate layer, in which the first intermediate layer contains metal oxide particles having a number-average primary particle diameter of from 30 to 450 nm; and the second intermediate layer contains a cured product of a composition containing an electron transport substance having a polymerizable functional group represented by the formula (1) or (2), and having a molecular weight of from 100 to 1,000, and a crosslinking agent having 3 to 6 groups reactive with the polymerizable functional group represented by the formula (1) or (2), and having a molecular weight of from 200 to 1,300.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: August 2, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Daisuke Kawaguchi, Takeshi Murakami, Kazumichi Sugiyama, Daisuke Tanaka
  • Patent number: 9335646
    Abstract: Provided are an electrophotographic photosensitive member in which a variation in the light-area potential is suppressed even when the electrophotographic photosensitive member is repeatedly used for a long time in a high-temperature, high-humidity environment, a method of producing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus that include the electrophotographic photosensitive member. The electrophotographic photosensitive member includes a support, an undercoat layer, and a photosensitive layer, wherein the undercoat layer contains a urethane resin and zinc oxide particles whose surfaces have been treated with a particular amount of an aminosilane compound.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: May 10, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenichi Kaku, Wataru Kitamura, Yuka Ishiduka, Mai Murakami, Ryoichi Tokimitsu, Hideaki Nagasaka, Takeshi Murakami
  • Patent number: 9304417
    Abstract: An electrophotographic photoreceptor includes a conductive support and a photosensitive layer and a surface protection layer that are sequentially laminated on the conductive support. The surface protection layer contains a binder resin and inorganic fine particles surface-treated with a hole transporting compound of the following General Formula 1. AR1-Q1)k??[General Formula 1] A is a hole transporting group. Q1 is an acidic group. R1 is a substituted or non-substituted alkylene, alkenylene or arylene group. k is a positive integer of 1 or more. If k is an integer of 2 or more, each of R1 and Q1 are same or different.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: April 5, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Toyoko Shibata, Seijiro Takahashi
  • Patent number: 9280072
    Abstract: Provided is a process for producing an electrophotographic photosensitive member, the process including the steps of: preparing a dispersion liquid by dispersing particles each containing an electron transporting substance in an aqueous dispersion medium; forming the coat of the dispersion liquid on the support; and forming an undercoat layer by heating the coat at a temperature equal to or more than the melting point of the electron transporting substance.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: March 8, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Harunobu Ogaki, Atsushi Okuda, Kunihiko Sekido
  • Patent number: 9256143
    Abstract: An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a charge transport molecule containing four radical polymerizable functional groups of the general structure exemplified below: where R1 and R2 contain a spacer group and a radical polymerizable functional group, R3 and R4 are selected from the group consisting of a radical polymerizable functional group, a non-radical polymerizable functional group, and one each of a radical polymerizable functional group and a non-radial polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable functional group. The curable composition also contains at least one curing agent. The curing agent comprises a urethane resin containing six radical polymerizable functional groups.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: February 9, 2016
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventor: David Glenn Black
  • Patent number: 9256144
    Abstract: An electrophotographic photosensitive member containing a terphenoquinone derivative represented by the following formula (1): wherein R1 to R5 may be the same or different and each represent a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an aryl group having 6 to 12 carbon atoms and optionally having an alkyl group having 1 to 12 carbon atoms, an aralkyl group having 6 to 12 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, or an alkoxy group having 2 to 6 carbon atoms.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: February 9, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Hideki Okada, Keiji Maruo
  • Patent number: 9250545
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a single-layered photosensitive layer formed so as to overlie the conductive substrate, the photosensitive layer containing a binder resin, a charge-generating material, a hole-transporting material, an electron-transporting material represented by General Formula (1), and at least one compound selected from a compound represented by General Formula (2) and a compound represented by General Formula (3). The amount of the at least one compound selected from the compound represented by General Formula (2) and the compound represented by General Formula (3) is in the range of approximately 10 parts by weight to 100 parts by weight in total relative to 100 parts by weight of the electron-transporting material represented by General Formula (1).
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: February 2, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Masahiro Iwasaki
  • Patent number: 9223251
    Abstract: A method of reducing an image artifact in a remanufactured toner cartridge. The method includes operating the remanufactured toner cartridge to transfer toner to a position between a developer roller and a metering blade of the remanufactured toner cartridge, the toner having a first formulation; and positioning a material having a second formulation different from the first formulation between the developer roller and the metering blade.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: December 29, 2015
    Assignee: CLOVER TECHNOLOGIES GROUP, LLC
    Inventors: Eric Tuvesson, Frank Li
  • Patent number: 9147789
    Abstract: A photoconductor comprising a layer stack with a semiconductor layer photoconductive for a predetermined wavelength range between two semiconductor boundary layers with a larger band gap than the photoconductive semiconductor layer on a substrate, wherein the semiconductor boundary layers comprise deep impurities for trapping and recombining free charge carriers from the photoconductive semiconductor layer, and two electrodes connected to the photoconductive semiconductor layer, for lateral current flow between the electrodes through the photoconductive semiconductor layer.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: September 29, 2015
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Bernd Sartorius, Harald Kuenzel, Helmut Roehle
  • Patent number: 9075325
    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: Grant
    Filed: September 4, 2013
    Date of Patent: July 7, 2015
    Assignee: XEROX CORPORATION
    Inventors: Gregory McGuire, Sarah J. Vella, Adrien P. Cote, Yvan Gagnon, Brynn Dooley
  • Patent number: 9074109
    Abstract: The present invention relates to a fluorine-containing polymer comprising a structure represented by the following general formula (I), as well as the preparation process and use thereof. According to the technical solution of the invention, a novel fluorine-containing polymer with a larger molecular weight and an aromatic side group is obtained through a simple reaction, and it can be used as a non-ionic fluorine carbon surfactant, and especially, is applicable to the preparation of a pigment dispersion. Additionally, the invention further relates to a pigment dispersion and the preparation process thereof.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: July 7, 2015
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Xuelan Wang, Zhuo Zhang, Jisheng Zhao, Chen Liu
  • Patent number: 9075326
    Abstract: Provided is an electrophotographic photoreceptor including a conductive substrate and a photosensitive layer provided on the conductive substrate, wherein an uppermost surface layer thereof is constituted with a cured film of a composition that contains at least two kinds of reactive charge transporting materials selected from a first reactive charge transporting material having an —OH group as a reactive functional group and a second reactive charge transporting material having an —OCH3 group as a reactive functional group, fluororesin particles, and an alkyl fluoride group-containing copolymer having repeating units represented by the following Structural Formulae A and B, and a relative dielectric constant ?r of the uppermost surface layer satisfies the following Formula (1):
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: July 7, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Jiro Korenaga, Keiko Matsuki, Masahiro Iwasaki, Mitsuhide Nakamura
  • Patent number: 9063447
    Abstract: The disclosure provides a flexible electrophotographic imaging member having an optically clear, cross-linked anticurl back coating of melamine formaldehyde to effect complete and absolute imaging member flatness.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: June 23, 2015
    Assignee: XEROX CORPORATION
    Inventor: Robert C. U. Yu
  • Patent number: 9057969
    Abstract: A photosensitive layer or a charge generation layer of an electrophotographic photosensitive member contains a gallium phthalocyanine and a particular diamine compound such as 1,2-diaminoethane or 1,3-diaminopropane. The content of the particular diamine compound in the photosensitive layer or the charge generation layer is from 10 ppm to 1,000 ppm (mass ratio) based on the gallium phthalocyanine.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: June 16, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsutomu Nishida, Masato Tanaka, Masataka Kawahara
  • Patent number: 9040214
    Abstract: Provided are an electrophotographic photosensitive member in which leakage doesn't easily occur, a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member, and a method of manufacturing the electrophotographic photosensitive member. The electrophotographic photosensitive member includes a conductive layer including titanium oxide particle coated with tin oxide doped with a hetero element. When an absolute value of a maximum current amount flowing through the conductive layer in a case of performing a test of applying ?1.0 kV including DC voltage to the conductive layer is defined as Ia, and an absolute value of a current amount flowing through the conductive layer in a case where a decrease ratio of a current amount per minute reaches 1% or less for the first time is defined as Ib, the relations of Ia?6000 and 10?Ib are satisfied. A volume resistivity of the conductive layer before the test is 1.0×108 ?·cm to 5.0×1012 ?·cm.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: May 26, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Fujii, Hideaki Matsuoka, Haruyuki Tsuji, Kazuhisa Shida, Nobuhiro Nakamura
  • Publication number: 20150132689
    Abstract: The presently disclosed embodiments are directed generally to an electrostatographic imaging member having low surface energy and is wear resistant. The imaging members include a charge transport layer that comprises a silicone ester additive that provides these beneficial properties.
    Type: Application
    Filed: November 13, 2013
    Publication date: May 14, 2015
    Applicant: XEROX CORPORATION
    Inventors: JIN WU, Kenny-Tuan T. Dinh, Helen R. Cherniack, Lin Ma, Nancy L. Belknap
  • Patent number: 9025990
    Abstract: A printer applies an imaging material to form an image, withdraws vapors from the applied imaging material and treats the withdrawn vapors with a vapor treatment system. The printer heats untreated withdrawn vapors with heat from the vapor treatment system.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: May 5, 2015
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Doron Schlumm, Sharon Nagler, Eyal Peleg
  • Patent number: 9017906
    Abstract: The disclosure provides a flexible electrophotographic imaging member having an optically clear, cross-linked anticurl back coating of melamine formaldehyde to effect complete and absolute imaging member flatness. In particular embodiments, the anticurl back coating further includes an organic or inorganic particle dispersion.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: April 28, 2015
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Mark Muscato, J. Robinson Cowdery-Corvan
  • Patent number: 9017909
    Abstract: The present disclosure is drawn to electrostatic printing. In an example, a coated photoconductive substrate can comprise a photoconductive substrate, the photoconductive substrate including a substrate having a charge generation layer and charge transport layer adhered thereto; and a top coating adhered to the photoconductive substrate. The top coating can comprise a cross-linkable polymer, a cross-linker, and a charge transport material, where the charge transport material is dispersed throughout the top coating and may be present in the top coating in an amount ranging from 20 wt % to 50 wt %.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: April 28, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sivapackia Ganapathiappan, Krzysztof Nauka, Hou T. Ng
  • 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: 20150111136
    Abstract: The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an electrostatographic imaging member having imaging layers that exhibit improved electrical performance. In these embodiments, both the charge generation layer and charge transport layer comprise a tetra-aryl polycarbonate copolymer.
    Type: Application
    Filed: October 17, 2013
    Publication date: April 23, 2015
    Applicant: XEROX CORPORATION
    Inventor: JIN WU
  • Publication number: 20150104738
    Abstract: A surface layer of an electrophotographic photosensitive member contains a cured product of a composition containing a hole transporting substance having an acryloyloxy group and/or a methacryloyloxy group and a siloxane-modified acrylic compound.
    Type: Application
    Filed: October 14, 2014
    Publication date: April 16, 2015
    Inventors: Shinji Takagi, Koichi Nakata
  • Publication number: 20150099217
    Abstract: Disclosed is an electrophotographic photoreceptor including a conductive support, a photosensitive layer on the conductive support and a surface layer on the photosensitive layer. The surface layer includes a cured resin prepared by polymerization of a compound having two or more radically polymerizable functional groups per molecule, the cured resin containing an organic resin fine particle and a metal oxide fine particle, and the organic resin fine particle comprising a resin containing a structural unit derived from at least one of melamine and benzoguanamine, the organic resin fine particle having a number average primary particle size of 0.01 to 3.00 ?m.
    Type: Application
    Filed: September 29, 2014
    Publication date: April 9, 2015
    Inventors: Hokuto HATANO, Kazunori Kurimoto, Seisuke Maeda, Hiroki Takao
  • 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
  • Publication number: 20150093693
    Abstract: An electrophotographic photosensitive member, including a support, a charge generating layer on the support, and a charge transporting layer on the charge generating layer, wherein the charge generating layer includes a gallium phthalocyanine crystal, a nitrogen-containing heterocyclic compound having a nitrogen atom having a substituent, and a compound represented by Formula (1) or (2).
    Type: Application
    Filed: September 3, 2014
    Publication date: April 2, 2015
    Inventors: Kaname Watariguchi, Masato Tanaka
  • Publication number: 20150093694
    Abstract: An electrophotographic photosensitive member, comprising a support, a charge generating layer on the support and a charge transporting layer on the charge generating layer, wherein the charge generating layer comprises a gallium phthalocyanine crystal, a nitrogen-containing heterocyclic compound and a compound represented by Formula (1), wherein a nitrogen atom in a heterocyclic ring of the nitrogen-containing heterocyclic compound has a substituent.
    Type: Application
    Filed: September 8, 2014
    Publication date: April 2, 2015
    Inventors: Kaname Watariguchi, Masato Tanaka
  • Patent number: 8993204
    Abstract: According to aspects of the present invention, an electrophotographic photosensitive member includes a surface layer comprising a cured resin obtained by polymerizing a compound having at least one polymerizable functional group. Aspects of the present invention provide an electrophotographic photosensitive member whose surface layer comprises a compound (urea derivative) having a certain structure, a method for producing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus including the electrophotographic photosensitive member.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: March 31, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaki Nonaka, Masato Tanaka, Masataka Kawahara, Michiyo Sekiya, Akira Yoshida
  • 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: 20150079509
    Abstract: A photoconductor, which contains an electrically conductive support, and at least a photoconductive layer provided over the electrically conductive support, wherein the photoconductive layer contains a compound represented by the following general formula (1): where R1, R2, R3, R4, R5 and R6 are each independently a hydrogen atom, a halogen atom, an alkyl group, an aralkyl group, an alkoxy group, or an aralkyloxy group; n, a, b, c, and d are each independently an integer of 1 to 4 and m is 1 or 2; and a plurality of R1, R2, R3, R4, R5 or R6 may be the same or different when n, m, a, b, c, or d is an integer of 2 or greater.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 19, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventor: Tomoyuki Shimada
  • Patent number: 8980507
    Abstract: A positively chargeable monolayer electrophotographic photosensitive member includes a photosensitive layer provided on a conductive substrate and having a monolayer structure containing at least a charge generating material, a hole transport material, an electron transport material, and a binder resin. The photosensitive layer contains a hole transport material containing a triarylamine derivative represented by a formula (1) below and an electron transport material containing a compound selected from the group consisting of quinone compounds having a predetermined structure.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: March 17, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Tomofumi Shimizu, Eiichi Miyamoto, Hiroki Tsurumi