Radiation-sensitive Composition Or Product Patents (Class 430/56)
  • Patent number: 10429753
    Abstract: An electrophotographic photoconductor comprises a support, an undercoat layer, a charge generation layer, and a hole transport layer in this order. The undercoat layer comprises an electron transport substance, and the charge generation layer comprises a gallium phthalocyanine crystal and an amide compound represented by formula (N1): where R1 represents a methyl group, a propyl group, or a vinyl group.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: October 1, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kaname Watariguchi, Masato Tanaka, Masataka Kawahara, Jumpei Kuno
  • Patent number: 10367162
    Abstract: A light-emitting device includes an emissive layer that emits light by recombination of first charges and second charges; a first electrode from which the first charges are supplied; a second electrode from which the second charges are supplied; a first charge transport layer that injects the first charges from the first electrode into the emissive layer; and a second charge transport layer that injects the second charges from the second electrode into the emissive layer. At least one of the charge transport layers is an absorbing charge transport layer that includes a light absorbing material that absorbs light within a portion of the emission spectrum of the light emitted by the emissive layer. The absorbing charge transport layer may be an ETL or an HTL, and may be located only between the first electrode and the emissive layer, only between the opposing second electrode and the emissive layer, or between both electrodes and the emissive layer.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: July 30, 2019
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Edward Andrew Boardman, James Andrew Robert Palles-Dimmock, Enrico Angioni, Tim Michael Smeeton
  • Patent number: 10331054
    Abstract: The present invention provides an electrophotographic member which has a high ability to impart charge to toners while the charge imparting ability is unlikely to be reduced even under an environment at high temperature and high humidity. The electrophotographic member comprises a substrate, an elastic layer formed on the substrate, an intermediate layer covering the surface of the elastic layer, and a surface layer covering the surface of the intermediate layer, wherein the intermediate layer contains a binder resin and a polymer having a specific structure, the surface layer contains silicon oxide, and the surface layer has a thickness of 10 nm or more and 300 nm or less.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: June 25, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shohei Urushihara, Masaki Yamada, Takashi Koyanagi, Hideya Arimura
  • Patent number: 10324387
    Abstract: Provided is an electrophotographic photoreceptor obtained by laminating a photosensitive layer and a surface protective layer in this order on a conductive support, wherein the surface protective layer contains conductive fine particles and crosslinkable organic fine particles, and either the conductive fine particles or the crosslinkable organic fine particles have been subjected to surface modification with a fluoroalkyl (meth)acrylate/(meth)acrylic acid copolymer.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: June 18, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takeshi Ishida, Seisuke Maeda, Kazuhiro Kuramochi
  • Patent number: 10310395
    Abstract: Provided are an electrophotographic photosensitive member capable of satisfying abrasion resistance and electrical properties and suppressing image deletion, and an electrophotographic apparatus and a process cartridge having the electrophotographic photosensitive member. A surface layer of the electrophotographic photosensitive member contains a polymer of a hole transport material having a polymerizable functional group, wherein the hole transport material has a specific structure.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: June 4, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koichi Nakata, Haruki Mori, Shinji Takagi, Masaki Nonaka, Ryoichi Tokimitsu
  • Patent number: 10273331
    Abstract: A polyarylate resin is represented by general formula (1) shown below. In general formula (1), R1 and R2 each represent, independently of one another, a hydrogen atom or a methyl group. r and s each represent an integer of at least 0 and no greater than 49. t and u each represent an integer of at least 1 and no greater than 50. r+s+t+u=100. r+t=s+u. X and Y each represent, independently of one another, a divalent group represented by chemical formula (1-1), chemical formula (1-2), chemical formula (1-3), or chemical formula (1-4). X and Y are different from one another.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: April 30, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Jun Azuma, Kenji Kitaguchi, Kensuke Okawa, Seiki Hasunuma, Tomofumi Shimizu
  • Patent number: 10216105
    Abstract: An electrophotographic photosensitive member includes a support member, an electroconductive layer, and a photosensitive layer in this order. The electroconductive layer contains a binder and particles. Each of the particles include a core made of a substance represented by general formula (1), and a coating layer coating the core and containing an electrically conductive material: M1M2O3??(1) wherein M1 represents an element selected from the group consisting of Sr, Li, Na, K, and Ba, and M2 represents an element selected from the group consisting of Ti, Nb, Ta, and Zr.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: February 26, 2019
    Assignee: Canon Kabushiki Kaisa
    Inventors: Kenichi Kaku, Takashi Anezaki, Taichi Sato, Jumpei Kuno, Atsushi Fujii
  • Patent number: 10209638
    Abstract: An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer has a single-layer structure and contains a charge generating material and a compound represented by general formula (1) shown below. In the general formula (1), R1 and R2 each represent, independently of each other: an alkyl group having 1 to 12 carbon atoms and optionally substituted by an alkoxy group having 1 to 6 carbon atoms or an alkoxycarbonyl group having 2 to 6 carbon atoms; an aryl group having 6 to 14 carbon atoms and optionally substituted by an alkyl group having 1 to 6 carbon atoms; an aralkyl group having 7 to 20 carbon atoms; or a cycloalkyl group having 3 to 10 carbon atoms. X represents —S— or —SO2—.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: February 19, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hideki Okada
  • Patent number: 10191398
    Abstract: An electrophotographic photoconductor including a support, an undercoat layer, and a photoconductive layer, the undercoat layer and the photoconductive layer being disposed on the support in an order mentioned, wherein the undercoat layer includes zinc oxide particles, a urethane bond-containing resin, and methylethyl ketone oxime, and the undercoat layer satisfies a formula below: 10<M/L<400??(Formula) where M is a ratio (ppm) of the methylethyl ketone oxime included in the undercoat layer, and L is an average thickness (?m) of the undercoat layer.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: January 29, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshihiro Ishida, Tetsuro Suzuki, Eiji Kurimoto, Tomoharu Asano, Daisuke Nii
  • Patent number: 10175589
    Abstract: A quinone derivative is represented by general formula (1). In general formula (1), at least one of R1-R3 and at least one of R4-R6 each represent, independently of one another, an alkyl group having 4 to 10 carbon atoms or an alkyl group having 2 to 5 carbon atoms that has an aryl group having 6 to 14 carbon atoms. All other of R1-R3 and all other of R4-R6 each represent, independently of one another, an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 14 carbon atoms, or a cycloalkyl group having 3 to 10 carbon atoms.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: January 8, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hideki Okada
  • Patent number: 10152002
    Abstract: An electrophotographic photosensitive member includes a support member, an electroconductive layer, and photosensitive layer in this order. The electroconductive layer contains a binder and particles. The particles have a core containing titanium oxide, and a coating layer coating the core and containing titanium oxide doped with niobium or tantalum.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: December 11, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Anezaki, Kenichi Kaku, Taichi Sato, Jumpei Kuno, Atsushi Fujii
  • Patent number: 10139741
    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: Grant
    Filed: September 4, 2013
    Date of Patent: November 27, 2018
    Assignee: Mitsubishi Chemical Corporation
    Inventor: Mitsuo Wada
  • Patent number: 10137443
    Abstract: The present invention discloses a composite catalyst for the photocatalytic isomerization of norbornadiene to prepare quadricyclane, comprising: a solid photocatalyst, selected from the group consisting of TiO2, Ti-MCM-41, Ti-SBA-15, ZnO, WO3, Ta2O5 or SrTiO3; and an organic photo-sensitizer loaded on the surface or in the channel of said solid photocatalyst, selected from benzophenone, acetophenone, Michler's Ketone, tetraethyl Michler's Ketone, and diethyl Michler's Ketone, where the organic photo-sensitizer is present in the solid photocatalyst in an amount of 0.5% to 20% by weight. The catalyst of the invention can catalyze a target reaction under the condition that no solvent is used, and the yield of the target product quadricyclane is higher. Furthermore, the catalyst of the invention has a stable activity, and it can be recycled. The invention further discloses a process for preparing the composite catalyst.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: November 27, 2018
    Assignee: TIANJIN UNIVERSITY
    Inventors: Jijun Zou, Xiangwen Zhang, Li Wang, Qingfa Wang
  • Patent number: 10115917
    Abstract: The present teachings relate to hybrid organic-inorganic perovskite solar cells including a hole-transport layer in contact with the perovskite light-absorbing layer, where the hole-transport layer (HTL) is a pristine (undoped) polymer. More specifically, the HTL comprises a copolymer including a benzo[1,2-d;4,5-d?]bistriazole-containing repeating unit and a benzo[1,2-b:4,5-b?]dithiophene-containing repeating unit.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: October 30, 2018
    Assignee: Northwestern University
    Inventors: Tobin J. Marks, Robert P. H. Chang, Teck Lip Dexter Tam, Hsueh-Chung Liao, Antonio Facchetti
  • Patent number: 10095138
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate, wherein when time that takes for a current value to reach the maximum after beginning of application of a square wave voltage to the electrophotographic photoreceptor is T1 and time that takes for the current value to reach the maximum after the beginning of the application of the square wave voltage and then decrease to one fifth of the maximum is T2, T2 is approximately from 3.2 to 11.0 times as large as T1.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: October 9, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kosuke Narita, Taketoshi Hoshizaki
  • Patent number: 10073364
    Abstract: Electrophotographic photoreceptor including a conductive substrate, an organic photosensitive layer on an outer peripheral surface of the conductive substrate, and an inorganic protective layer on an outer peripheral surface of the organic photosensitive layer, the inorganic protective layer containing gallium and oxygen. A volume resistivity of an inner region of the inorganic protective layer, the inner region extending 0.2 ?m or about 0.2 ?m from an inner peripheral surface of the inorganic protective layer in a thickness direction, and a volume resistivity of an outer region of the inorganic protective layer, the outer region extending 0.2 ?m or about 0.2 ?m from an outer peripheral surface of the inorganic protective layer in the thickness direction, are both 6.0×107 ?·cm or more and 4.0×108 ?·cm or less or about 6.0×107 ?·cm or more and about 4.0×108 ?·cm or less.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: September 11, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yoichi Kigoshi, Masaki Hirakata, Satomi Kashiwagi, Nobuyuki Torigoe, Takeshi Iwanaga, Takashi Imai
  • Patent number: 10067431
    Abstract: An electrophotographic photosensitive member, in which occurrences of image defects are suppressed, and a method for manufacturing the electrophotographic photosensitive member are provided. In addition, a process cartridge and an electrophotographic apparatus, which include the electrophotographic photosensitive member, are provided. The surface layer of the electrophotographic photosensitive member contains a cured material, and the cured material is a copolymer of a hole transport compound having a chain-polymerizable functional group and a vinyl ester compound containing a long-chain alkyl group.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: September 4, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinji Takagi, Masaki Nonaka, Haruki Mori, Ryoichi Tokimitsu, Koichi Nakata
  • Patent number: 10067432
    Abstract: An electrophotographic photosensitive member includes a surface layer containing a charge transporting material and a specific polyester resin having a structure including a specific branched chain.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: September 4, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazunori Noguchi, Harunobu Ogaki, Kazumichi Sugiyama
  • Patent number: 10036969
    Abstract: An electrophotographic photoreceptor includes a conductive substrate satisfying a condition (A); an undercoat layer satisfying conditions (B) and (C), disposed on the conductive substrate, and containing metal oxide particles; and a photosensitive layer disposed on the undercoat layer: condition (A): in the case where depressions existing in the surface of the conductive substrate are observed with a laser microscope, the width of the largest depression is 400 ?m or less, and the depth of the depression is 15 ?m or less; condition (B): in the case where the undercoat layer is subjected to a Cole-Cole plot analysis, an angular frequency ?max at which a complex impedance component is maximum is from 2.0 rad to 25.0 rad; and condition (C): volume resistivity obtained from the Cole-Cole plot analysis of the undercoat layer is from 7.0×107? to 1.0×109?.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: July 31, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masahiko Miyamoto, Daisuke Haruyama, Shigeto Hashiba
  • Patent number: 9977354
    Abstract: Provided is a lamination-type electrophotographic photoreceptor comprising a conductive substrate, and a charge transport layer and a charge generation layer both on the conductive substrate, wherein the charge transport layer comprises a charge transport substance represented by the general formula (1), a binder resin, and a particulate silicon compound.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: May 22, 2018
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kazutaka Ida, Akiteru Fujii
  • Patent number: 9964868
    Abstract: The invention relates to a multilayer type electrophotographic photoreceptor comprising: a conductive support; and, on the conductive support, a charge generation layer containing a hydroxygallium phthalocyanine pigment and a charge transport layer, wherein the content of ?-chloronaphthalene in hydroxygallium phthalocyanine pigment in the charge generation layer is in a range of 0 ng/cm2 to 0.1 ng/cm2, the charge transport layer contains a non-halogen organic solvent having a boiling point of 140° C. or more, and the content of the non-halogen organic solvent having a boiling point of 140° C. or more is in a range of 0.1 ?g/cm2 to 5 ?g/cm2.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: May 8, 2018
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Akiteru Fujii
  • Patent number: 9939745
    Abstract: A conductive support for an electrophotographic photoreceptor includes a metallic cylindrical member. The conductive support has a bare area exposed even after a photosensitive layer is disposed on the conductive support, and the outer circumferential surface of at least part of the bare area has a surface residual stress of about ?10 MPa or less.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: April 10, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Shiori Okuda, Hiroaki Ogawa, Akihiko Nakamura
  • Patent number: 9939743
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; an undercoat layer disposed on the conductive substrate and containing a binder resin, metal oxide particles, and an electron-accepting compound having an anthraquinone structure; and a photosensitive layer disposed on the undercoat layer, wherein the reflectance RL of the undercoat layer for light having a wavelength ranging approximately from 470 nm to 510 nm is approximately from 2% to 5%.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: April 10, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Taketoshi Hoshizaki
  • Patent number: 9904187
    Abstract: A cylindrical member used in an electrophotographic photoconductor, the cylindrical member includes an impact-pressed cylindrical body containing aluminum and a long-chain fatty acid ester based lubricant that is present on the outer surface of the impact-pressed cylindrical body in an amount of approximately not more than 5.0×10?3 mg/cm2.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: February 27, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kazuya Hongo, Masahiro Andoh
  • Patent number: 9897945
    Abstract: An intermediate transfer belt includes a base layer, an elastic layer, and a surface layer. The elastic layer is composed of an elastomer composition containing an elastomer and metal oxide particles. At least a portion of a surface of the metal oxide particles is positioned at a surface of the elastic layer. At least the portion is coupling-treated with a metal coupling agent. A radical polymerizable functional group of the metal coupling agent is bonded to a radical polymerizable compound composing the surface layer via radical polymerization.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: February 20, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Sadaaki Sakamoto, Takayuki Suzuki, Ito Koga, Eiichi Yoshida
  • Patent number: 9885971
    Abstract: There is provided a charging member capable of preventing the occurrence of abnormal discharge at low temperature and low humidity, and capable of preventing the occurrence of an image defect due to abrasion. The charging member includes a support and a surface layer on the support, and the surface layer contains a specific compound.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: February 6, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kineo Takeno, Noriyuki Doi, Masataka Kodama
  • Patent number: 9864286
    Abstract: An electrophotographic photoreceptor includes an electroconductive substrate, an organic photosensitive layer on the electroconductive substrate and an inorganic protective layer on the organic photosensitive layer, wherein a layer that forms a surface of the organic photosensitive layer contains a charge transporting material, a binder resin, and a silica particle; the inorganic protective layer contains a group 13 element, an oxygen atom, and a hydrogen atom; a sum of element constitution ratios of the group 13 element, the oxygen atom, and the hydrogen atom to all elements constituting the inorganic protective layer is equal to or more than 90 atomic %; and an element composition ratio (oxygen atom/group 13 element) of the oxygen atom and the group 13 element is 1.0 or more and less than 1.5.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: January 9, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Fumiaki Mera, Nobuyuki Torigoe, Masaki Hirakata, Hideya Katsuhara, Yoichi Kigoshi, Satomi Kashiwagi, Yuko Iwadate, Kenji Kajiwara, Tatsuki Sano, Takashi Imai, Takeshi Iwanaga
  • Patent number: 9851647
    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, and a charge transport layer, and where the charge transport layer contains a mixture of a charge transport component and a polycarbonate AP.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: December 26, 2017
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan Dinh, Lanhui Zhang, Jimmy E. Kelly, Mark S. Thomas, Min-Hong Fu, Lin Ma, Markus R. Silvestri, Marc J. LiVecchi, Robert W. Hedrick, Linda L. Ferrarese
  • Patent number: 9851648
    Abstract: The present invention provides an electrophotographic photosensitive member that allows positive ghost to be reduced even in repeated use. The electrophotographic photosensitive member of the present invention is an electrophotographic photosensitive member wherein an undercoat layer contains a polymerization product of a composition including a compound represented by the following formula (1).
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: December 26, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masashi Nishi, Kunihiko Sekido, Michiyo Sekiya, Kei Tagami, Isao Kawata, Yuto Ito, Akihito Saitoh
  • Patent number: 9829811
    Abstract: An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer contains at least a charge generating material, a hole transport material, and a binder resin. The hole transport material is a compound represented by the following general formula (1). The binder resin is a resin represented by the following general formula (2). In general formula (1), R1 and R3 each independently represent an alkyl group, an aryl group, an aralkyl group, or an alkoxy group; and R2 and R4 each independently represent an alkyl group, or an alkoxy group. In general formula (2), R23, R24, and R25 each independently represent a hydrogen atom, or a C1-4 alkyl group, at least one of R23, R24, and R25 representing a C1-4 alkyl group; p+q=1.00, and 0.35?p<1.00; and n represents 2 or 3.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: November 28, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Jun Azuma, Takahiro Oki, Keiji Maruo
  • 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: 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: 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: 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