Nitrogen Hetero Ring Compound Patents (Class 430/58.5)
  • Patent number: 10962893
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; and a photosensitive layer arranged on the conductive substrate and containing, as a charge generating material, any one material selected from the group consisting of titanyl phthalocyanines, metal-free phthalocyanines, chlorogallium phthalocyanines and hydroxygallium phthalocyanines; and, as an electron transporting material, a naphthalene tetracarboxylic acid diimide compound represented by Formula (1) below, where R1 and R2 each represent a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkylene group, an alkoxy group, an alkyl ester group, a phenyl group optionally having a substituent, a naphthyl group optionally having a substituent, or a halogen element; and R1 and R2 are optionally the same or different: The photoreceptor realizes a stable print density even in a low-temperature environment by suppressing a reduction in print density that is caused by potential fluctuation of the photoreceptor in the low-temperat
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: March 30, 2021
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Shinjiro Suzuki, Seizo Kitagawa, Yuji Ogawa
  • Patent number: 10608183
    Abstract: To provide a charge transport layer excellent in the external quantum efficiency, and an organic photoelectronic element comprising the charge transport layer. A charge transport layer comprising a film containing a fluorinated polymer and a semiconductor material, wherein the film has a material composition such that ?Eth is within a range of from 0.010 to 0.080 MV/cm. An organic photoelectronic element comprising the charge transport layer.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: March 31, 2020
    Assignees: AGC Inc., National University Corporation Yamagata University
    Inventors: Takefumi Abe, Yasuhiro Kuwana, Shigeki Hattori, Kaori Tsuruoka, Daisuke Yokoyama
  • Patent number: 10338485
    Abstract: An electrophotographic photosensitive member (1) includes a conductive substrate (2) and a photosensitive layer (3). The photosensitive layer (3) contains a charge generating material and a compound represented by general formula (1) shown below. In general formula (1), R1 and R2 each represent, independently of one another: a C1-20 alkyl group optionally having at least one of a C6-14 aryl group optionally having a substituent and a C2-20 alkoxycarbonyl group; a C6-14 aryl group optionally having a C1-20 alkyl group; a C3-10 cycloalkyl group; or a C1-6 alkoxy group.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: July 2, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hideki Okada
  • Patent number: 10249829
    Abstract: An organic light-emitting device including a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a compound represented by Formula 1: When the compound represented by Formula 1 is used as electron-transporting material, an organic light-emitting device including this compound may show significantly improved efficiency, driving voltage, high luminance, and long lifespan characteristics.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: April 2, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jungsub Lee, Seulong Kim, Younsun Kim, Dongwoo Shin, Naoyuki Ito, Jino Lim
  • Patent number: 10131789
    Abstract: The present disclosure provides reactive quencher dyes that can be used in the detection and/or quantification of desirable target molecules, such as proteins, nucleic acids and various cellular organelles. These dyes are essentially non-fluorescent but are efficient quenchers of various fluorescent dyes. Also, provided are methods of using the dyes, bio-probes incorporating dyes and methods of using the bio-probes. The quencher dyes described herein are modified to provide beneficial properties.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: November 20, 2018
    Assignee: Enzo Biochem, Inc.
    Inventors: Zaiguo Li, Praveen Pande, Natarajan Raju
  • Patent number: 10106494
    Abstract: Disclosed herein are gemini surfactants, and methods for making and using these gemini surfactants. These gemini surfactants may be incorporated in paints and coatings to provide hydrophilic and/or self-cleaning properties.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: October 23, 2018
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Georgius Abidal Adam
  • Patent number: 10001716
    Abstract: A positively chargeable single-layer 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, an electron transport material, and an electron accepting compound. The hole transport material includes a benzidine derivative. The electron transport material includes at least one compound selected from the group consisting of compounds represented by general formulae (1), (2), (3), and (4) shown below. The electron accepting compound includes at least one compound selected from the group consisting of compounds represented by general formulae (5) and (6) shown below.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: June 19, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Tomofumi Shimizu, Makoto Shishido
  • Patent number: 9825239
    Abstract: The present invention provides an organic thin film light emitting device having high luminous efficiency and durable life realized by using a benzindolocarbazole derivative as represented by either general formula (1-1) or (1-2) given below: [Chemical compound 1] wherein R1 to R24 may be identical to or different from each other and are selected from the group consisting of a hydrogen atom, alkyl group, cycloalkyl group, heterocyclic group, amino group, alkenyl group, cycloalkenyl group, alkynyl group, alkoxy group, alkylthio group, aryl ether group, aryl thioether group, aryl group, heteroaryl group, halogen atom, carbonyl group, carboxyl group, oxycarbonyl group, carbamoyl group, silyl group, and —P(?O)R25R26; R25 and R26 represent either an aryl group or a heteroaryl group; R25 and R26 may be condensed to form a ring; L1 to L4 independently represent a single bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group; and A1 to A4 independently represent an a
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: November 21, 2017
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Shinichi Matsuki, Daisaku Tanaka, Takeshi Ikeda, Atsushi Ikeda
  • Patent number: 9590179
    Abstract: Provided are a curable composition for an organic electroluminescent element, which has high light emission efficiency and is applicable to a wet process, a cured product thereof, and an organic electroluminescent element containing the cured product in an organic layer. More specifically, provided are a curable composition containing a compound represented by an indolocarbazole skeleton compound, a cured product obtained by curing the curable composition, and an organic electroluminescent element containing the cured product in an organic layer.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: March 7, 2017
    Assignee: NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD.
    Inventors: Hiroyuki Hayashida, Masashi Niina, Hiroshige Tanaka, Kazuto Shiraishi, Tohru Asari, Kazuaki Yoshimura
  • Patent number: 9548465
    Abstract: An electronic device includes a first electrode and a second electrode which are separately formed on a base; a functional layer which includes an organic semiconductor material layer, and is formed on the base between the first electrode and the second electrode; a functional layer extension portion which includes the organic semiconductor material layer, and extends from the functional layer; a protective film which is formed at least on the functional layer; and an insulating layer which covers an entire surface, in which the protective film is patterned to include at least two sides which intersect with each other at an acute angle, and a vertex portion of the protective film in which the two sides intersect with each other, is chamfered.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: January 17, 2017
    Assignee: Sony Corporation
    Inventor: Ryuto Akiyama
  • Patent number: 9383664
    Abstract: An electrophotographic photosensitive member includes a photosensitive layer containing a naphthalenediimide derivative represented by the following formula (1) or (2). In the formula (1) or (2), R1 represents an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 12 carbon atoms and optionally having an alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: July 5, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hideki Okada
  • Patent number: 9377720
    Abstract: Disclosed herein is a method for electrophotographic printing, the method comprising: transferring, separately, from a photo imaging plate, a plurality of images formed from different colored electrostatic ink compositions to an intermediate transfer member to form a print image on the intermediate transfer member; providing a print substrate that has been wetted with a protic solvent; transferring the print image to the print substrate. Also disclosed herein is an apparatus for electrophotographic printing.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: June 28, 2016
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Shai Lior, Mark Sandler, Peter Nedelin
  • Patent number: 9348243
    Abstract: An electrophotographic photosensitive member includes a photosensitive layer containing a naphthalenediimide derivative represented by the following general formula (1). In the general formula (1), R1 represents an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 12 carbon atoms and optionally having an alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms. R2 and R3, independently from each other, each represent an alkyl group having 1 to 4 carbon atoms, a halogen group, or a cyano group.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: May 24, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hideki Okada
  • Patent number: 9348242
    Abstract: Provided is an electrophotographic photosensitive member including a charge-generating layer that includes: an amine compound represented by the formula (1) and a gallium phthalocyanine crystal, or a gallium phthalocyanine crystal containing the amine compound represented by the formula (1); and an arene compound, in which the arene compound includes at least one compound selected from the group consisting of a compound represented by the formula (2) and a compound represented by the formula (3).
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: May 24, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Masato Tanaka
  • Patent number: 9081313
    Abstract: An electrophotographic photoconductor including, in the order recited: a conductive substrate; an undercoat layer provided on the conductive substrate; and a photoconductive layer provided on the undercoat layer and containing at least a phthalocyanine compound as a charge generation material and, as a resin binder, a polyvinyl acetal resin composed of a repeating unit represented by formula (1): where, in formula (1), R is a hydrogen atom, a methyl group, an ethyl group or a propyl group; x, y and z represent mol % of the respective structural units, where x+y+z=100; n is an integer from 1 to 5; a degree of acetalization (x+z) is 86 to 99 mol %; and a molar ratio (x:z) of the structural units is 95:5 to 50:50.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: July 14, 2015
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Kazuki Nebashi, Shinjiro Suzuki, Seizo Kitagawa
  • Publication number: 20150118606
    Abstract: An electrophotographic photosensitive member includes a photosensitive layer containing a naphthalenediimide derivative represented by the following general formula (1). In the general formula (1), R1 represents an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 12 carbon atoms and optionally having an alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms. R2 and R3, independently from each other, each represent an alkyl group having 1 to 4 carbon atoms, a halogen group, or a cyano group.
    Type: Application
    Filed: October 23, 2014
    Publication date: April 30, 2015
    Applicant: KYOCERA Document Solutions Inc.
    Inventor: Hideki OKADA
  • Publication number: 20150118607
    Abstract: An electrophotographic photosensitive member includes a photosensitive layer containing a naphthalenediimide derivative represented by the following formula (1) or (2). In the formula (1) or (2), R1 represents an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 12 carbon atoms and optionally having an alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms.
    Type: Application
    Filed: October 24, 2014
    Publication date: April 30, 2015
    Applicant: KYOCERA Document Solutions Inc.
    Inventor: Hideki OKADA
  • 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: 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: 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: 8956792
    Abstract: Provided is an electrophotographic photosensitive member which is excellent in terms of both continuous reduction of contact stress with contact members and the like and potential stability during repeated use. A charge transport layer which serves as a surface layer of an electrophotographic photosensitive member has a matrix-domain structure including a matrix containing a component [?] (polycarbonate resin D having a specific repeating structural unit) and a charge-transporting substance and domains containing a component [?] (polycarbonate resin A having a repeating structural unit including a specific siloxane moiety).
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: February 17, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Okuda, Harunobu Ogaki, Kazunori Noguchi, Takashi Anezaki, Kazuhisa Shida, Shio Murai
  • Patent number: 8937175
    Abstract: The invention relates to novel compounds as ligands for transition metal complexes and materials made thereof that can be used, for example, as emitters in organic light-emitting electrochemical cells (OLEECs). According to the invention, non-fluorinated electron-poor emitter materials are disclosed for the first time that can be used in organic light-emitting electrochemical cells.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: January 20, 2015
    Assignee: Osram GmbH
    Inventors: Andreas Kanitz, Daniel Stark
  • Patent number: 8889324
    Abstract: An image bearing member including an electroconductive substrate, and a photosensitive layer provided overlying the electroconductive substrate, the photosensitive layer containing at least one charge transport materials selected from the group consisting of a naphthalene tetracarboxylic acid diimide-isoindol derivative represented by the following chemical structure 1, a naphthalimide-isoindol derivative represented by the following chemical structure 2, and a triphenyl amine-isoindol derivative represented by the following chemical structure 3, where R1 and R2 independently represent a hydrogen atom, a substituted or non-substituted alkyl group, an alkoxy group, a substituted or non-substituted aromatic hydrocarbon group, a halogen atom, and a nitro group, k represents an integer of 1 to 4, and l represents an integer of from 1 to 5 and R3 represents a substituted or non-substituted alkyl group, a substituted or non-substituted cycloalkyl group, and a substituted or non-substituted aromatic hydrocarbo
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: November 18, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryota Arai, Tomoyuki Shimada
  • Patent number: 8841052
    Abstract: In order to provide an electrophotographic photosensitive member with which a ghost is suppressed even under a low temperature and low humidity environment, and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member, the electrophotographic photosensitive member has a support, an undercoat layer formed on the support, and a photosensitive layer formed on the undercoat layer and comprising a charge generating material and a hole transporting material, wherein the undercoat layer comprises a particular amine compound.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: September 23, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kaname Watariguchi, Takeshi Murakami, Masataka Kawahara, Masato Tanaka, Akira Yoshida
  • Patent number: 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
  • Publication number: 20140212803
    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: Application
    Filed: January 30, 2014
    Publication date: July 31, 2014
    Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Yuko IWASHITA, Yukimasa WATANABE, Junichiro OTSUBO, Kazuaki EZURE, Kazutaka SUGIMOTO
  • Publication number: 20140170541
    Abstract: Provided is an electrophotographic photosensitive member including a charge-generating layer that includes: an amine compound represented by the formula (1) and a gallium phthalocyanine crystal, or a gallium phthalocyanine crystal containing the amine compound represented by the formula (1); and an arene compound, in which the arene compound includes at least one compound selected from the group consisting of a compound represented by the formula (2) and a compound represented by the formula (3).
    Type: Application
    Filed: December 4, 2013
    Publication date: June 19, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Masato Tanaka
  • Patent number: 8741515
    Abstract: Provided is an image holding member for an image forming apparatus including a support; and a photosensitive layer disposed on the support and containing a compound represented by the following formula (I): wherein in the formula (I), R1's each independently represent a substituted or unsubstituted, linear or branched alkyl group having from 1 to 8 carbon atoms; Ar's each independently represent a substituted or unsubstituted phenyl group, a substituted or unsubstituted monovalent polynuclear aromatic hydrocarbon group having two aromatic rings, a substituted or unsubstituted monovalent condensed aromatic hydrocarbon group having two or three aromatic rings, or a substituted or unsubstituted monovalent aromatic heterocyclic group; and n's each independently represent a number of from 0 to 7.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: June 3, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hidekazu Hirose, Ryosaku Igarashi, Katsuhiro Sato
  • Publication number: 20140127616
    Abstract: A photoconductor containing an optional anticurl layer, 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 overcoat layer mixture of a charge transport compound, a melamine resin, an optional acid catalyst, and a fluoro component.
    Type: Application
    Filed: November 3, 2012
    Publication date: May 8, 2014
    Applicant: XEROX CORPORATION
    Inventor: Jin Wu
  • Publication number: 20140120464
    Abstract: A single-layer-type electrophotographic photosensitive member includes a layer disposed on an electrically conductive substrate, the layer including at least a charge-generating material, an electron transport material, a hole transport material, and a binder resin within the same layer. The charge-generating material contains a phthalocyanine pigment and N-type pigments including at least a perylene-based pigment and an azo-based pigment, and the total amount of the N-type pigments is 0.03 to 10 parts by mass relative to 1 part by mass of the phthalocyanine pigment.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 1, 2014
    Applicant: Kyocera Document Solutions Inc.
    Inventors: Yuko Iwashita, Kazutaka Sugimoto, Junichiro Otsubo, Yukimasa Watanabe, Kazuaki Edure
  • Patent number: 8703373
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; and a photosensitive layer on the conductive substrate, wherein a layer having an outermost surface of the photoreceptor contains a polymer that is formed by polymerizing a crosslinkable charge transport material having an aromatic group and a —CH2OH group, and the layer having the outermost surface satisfies the following Formula (1): (Peak 2)/(Peak 1)?0.05??(1) wherein Peak 1 represents a peak area of an absorption peak (from about 1550 cm?1 to about 1650 cm?1) of stretching vibration of an aromatic group, which is obtained when an infrared absorption spectrum of the layer having the outermost surface is measured, and Peak 2 represents a peak area of an absorption peak (from about 1670 cm?1 to about 1710 cm?1) of an aromatic aldehyde, which is obtained when the infrared absorption spectrum of the layer having the outermost surface is measured.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: April 22, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Masahiro Iwasaki
  • Patent number: 8697321
    Abstract: When an abutting pressure of the cleaning blade on a photoreceptor is increased, a chattering occurs due to the so-called a stick-slip phenomenon that the blade repeatedly undergoes sticking to the outermost surface of the photoreceptor and slipping thereon. As a result, a possibility of noise generation becomes higher and there is a possibility that toner particles might pass through during slipping to cause a cleaning failure, resulting in a streaky image defect. There is also a higher possibility that the so-called a filming phenomenon might occur, in which a component of the toner sticks to the photoreceptor surface by the action of the blade pressure and becomes difficult to remove, so as to lead to persistent image defects. Furthermore, since the photoreceptor is rotated with toners in the state of being strongly pressed thereagainst, the image defects are apt to be caused due to peripheral-direction scratches.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: April 15, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventor: Akiteru Fujii
  • Patent number: 8679709
    Abstract: According to the invention, there is provided an electrophotographic photoreceptor comprising a conductive substrate and a photosensitive layer provided on a surface of the conductive substrate, an outermost layer of the photosensitive layer containing a crosslinked product composed of a guanamine compound and at least one charge transporting material having at least one substituent selected from the group consisting of —OH, —OCH3, —NH2, —SH, and —COOH.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: March 25, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Katsumi Nukada, Wataru Yamada, Masahiro Iwasaki, Kazuhiro Koseki
  • Patent number: 8673523
    Abstract: An image holding member for an image forming apparatus includes: a substrate; and a photosensitive layer on the substrate, the photosensitive layer containing a compound including a partial structure represented by the following Formula (II-2) wherein in Formula (II-2), Ar represents a substituted or unsubstituted phenyl group, a substituted or unsubstituted monovalent polynuclear aromatic hydrocarbon group having from 2 to 10 aromatic rings, a substituted or unsubstituted monovalent condensed aromatic hydrocarbon group having from 2 to 10 aromatic rings, or a substituted or unsubstituted monovalent aromatic heterocyclic group; q represents 0 or 1; and n's each independently represent an integer of from 0 to 7.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: March 18, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hidekazu Hirose, Takeshi Agata, Katsuhiro Sato
  • 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: 20140045108
    Abstract: A imaging member, such as a photoreceptor, having an outermost layer that is a structured organic film (SOF) comprising a plurality of segments and a plurality of linkers including a first fluorinated segment, a second electroactive segment and fluorinated secondary components.
    Type: Application
    Filed: August 10, 2012
    Publication date: February 13, 2014
    Applicant: XEROX CORPORATION
    Inventors: Sarah J. VELLA, Matthew A. HEUFT, Adrien P. COTE, Paul GERROIR
  • Patent number: 8623577
    Abstract: To provide: a latent electrostatic image bearing member including one of a cured material obtained through radical polymerization of a radically polymerizable compound of component (A1), and a cured material obtained through radical polymerization of a radically polymerizable compound of component (A2) in the outermost layer, wherein the component (A1) includes two radically polymerizable groups and a substituted amino group which does not include a radically polymerizable group in a molecule, and the radically polymerizable group and the nearest substituted amino group which does not include an unsaturated bond in between are connected with two or more aromatic hydrocarbon compounds, and, the radically polymerizable compound of component (A2) includes a condensed polycyclic aromatic hydrocarbon formed by bonding a radically polymerizable group and a non-radically polymerizable substituted amine group through a condensed polycyclic aromatic hydrocarbon group; and an image forming apparatus, image forming meth
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: January 7, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Tamotsu Horiuchi, Kazukiyo Nagai, Hongguo Li, Tetsuro Suzuki, Hiroshi Tamura
  • Patent number: 8609309
    Abstract: To provide an electrophotographic photoreceptor having a high sensitivity, a good balance of various electric properties such as chargeability and residual potential, a good stability of the coating solution, and an excellent light resistance. An electrophotographic photoreceptor comprising an electroconductive support having thereon a photosensitive layer, wherein the photosensitive layer contains a compound represented by the following formula (1): (wherein R1 represents a group having a chiral center, R2 represents a hydrogen atom, an alkyl group which may have a substituent, or an aryl group which may have a substituent, R3 and R4 each independently represents an alkylene group which may have a substituent, or an arylene group which may have a substituent, and R5, R6, R7 and R8 each independently represents an alkyl group which may have a substituent, or an aryl group which may have a substituent, and at least one member of R5 to R8 is an aryl group having a substituent).
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: December 17, 2013
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yuka Nagao, Teruyuki Mitsumori, Masayuki Hiroi
  • Patent number: 8586270
    Abstract: An electrophotographic photoconductor including: an electrically conductive substrate; and at least a photoconductive layer thereon, wherein the photoconductive layer contains a diazapentadiene derivative represented by general formula (1): where “X” represents general formula (a), (b) or (c); “R1” and “R2” each represent substituted or unsubstituted alkyl group or aromatic hydrocarbon group, and may be the same or different; “R1” and “R2” may be joined together via “Y” to form a ring; “Y” represents single bond, oxygen atom, —CH2CH2—, or —CH?CH—, where “R3” represents substituted or unsubstituted alkyl group, aromatic hydrocarbon group, alkoxy group, alkoxycarbonyl group, or halogen group; “R4” represents substituted or unsubstituted alkyl or aromatic hydrocarbon group; “n” represents integer ranging from 0 to 4; and when “n” is integer of 2 to 4, “R3” may be the same or different.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: November 19, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryota Arai, Tomoyuki Shimada, Minoru Umeda
  • Publication number: 20130288170
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; a single-layer photosensitive layer that is provided on the conductive substrate and includes a binder resin, a charge generation material, a hole transport material, and an electron transport material, wherein a half decay exposure during positive charging is less than or equal to 0.18 ?J/cm2, and a half decay exposure during negative charging is 2 to 12 times the half decay exposure during positive charging.
    Type: Application
    Filed: December 13, 2012
    Publication date: October 31, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yohei SAITO, Koji BANDO, Shinya YAMAMOTO, Masahiro IWASAKI, Takayuki YAMASHITA, Jiro KORENAGA, Yuko YAMANO
  • 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: 20130122410
    Abstract: An electrophotographic photoconductor including a conductive support, a charge generating layer, a hole transporting layer, and a hole transporting-protective layer, these layers being laminated in this order on the conductive support, wherein the hole transporting-protective layer contains a three-dimensionally crosslinked product which is obtained through chain polymerization of at least a radical polymerizable hole-transporting compound by irradiating the radical polymerizable hole-transporting compound with an active energy beam, and wherein the hole transporting-protective layer contains an oxazole compound represented by General Formula (1) or (2) below:
    Type: Application
    Filed: July 29, 2011
    Publication date: May 16, 2013
    Inventors: Kazukiyo Nagai, Tetsuro Suzuki, Hongguo Li
  • Patent number: 8380109
    Abstract: An image forming apparatus including at least an image bearing member having a substrate having a photosensitive layer thereon, the image bearing member to bear a latent electrostatic image on a surface thereof, a charging device to the surface of the image bearing member, an irradiation device to irradiate the surface of the image bearing member with light to form a latent electrostatic image thereon, a development device to develop the latent electrostatic with toner to obtain a developed image, a transfer device to transfer the developed image to a recording medium, and a cleaning device to clean the surface of the image bearing member, wherein the photosensitive layer includes naphthalene tetracarbonic acid diimide derivative as a charge transport material represented by the following Chemical Structure (1): In the Chemical Structure (1), Z represents a group represented by the following Chemical Formula (1): or the following Chemical Formula (2): —R9??Chemical Formula (2).
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: February 19, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Eiji Kurimoto, Keisuke Shimoyama, Tomoyuki Shimada, Masafumi Ohta, Yuuji Tanaka
  • Patent number: 8309284
    Abstract: An organic, semiconducting material, in particular, a material which can be used as a semiconductor material in organic electronics.
    Type: Grant
    Filed: November 12, 2007
    Date of Patent: November 13, 2012
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Andreas Kanitz, Jürgen Adler, Ralf Krause, Günter Schmid
  • Patent number: 8304153
    Abstract: An electrophotographic photoreceptor including a conductive substrate and a photosensitive layer overlying the conductive substrate. The photosensitive layer comprises a phthalimide isoindole derivative having a specific chemical formula.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: November 6, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoyuki Shimada, Ryota Arai
  • Patent number: 8232031
    Abstract: The present invention provides a naphthalenetetracarboxylic acid diimide derivative represented by the following general formula (1): wherein R1 and R2, which are identical or different, each represent a substituted or non-substituted alkyl group or a substituted or non-substituted aromatic hydrocarbon group; R3 represents an alkyl group having 1 to 8 carbon atoms or an aromatic hydrocarbon group; R4, R5, R6 and R7, which are identical or different, each represent a hydrogen atom, a substituted or non-substituted alkyl group, or a substituted or non-substituted aromatic hydrocarbon group; and R1 and R2 may be linked to form a substituted or non-substituted heterocyclic group including a nitrogen atom; with compounds where all of R1, R2 and R3 are a methyl group, and compounds where both of R1 and R2 are a methyl group and R3 is a 1-octyl group being excluded.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: July 31, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Masafumi Ohta, Tomoyuki Shimada, Yuuji Tanaka, Eiji Kurimoto, Keisuke Shimoyama
  • Patent number: 8173341
    Abstract: The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to the incorporation of a liquid compound having a high boiling point into the charge transport layer such that an anticurl back coating is no longer needed for reduction or elimination of photoreceptor layer curling.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: May 8, 2012
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Stephen T. Avery, Yuhua Tong
  • Patent number: 8168356
    Abstract: The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to the incorporation of a liquid compound having a high boiling point into the charge transport layer such that an anticurl back coating is no longer needed for reduction or elimination of photoreceptor upward curling.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: May 1, 2012
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Stephen T. Avery, Yuhua Tong, Michael Roetker, Edward F. Grabowski, Jimmy E. Kelly
  • Publication number: 20120064443
    Abstract: An N-phenyl-diphenylisoindole derivative having the following formula (I): wherein each of R1 and R2 represents a hydrogen atom, a substituted or an unsubstituted alkyl group, a substituted or an unsubstituted alkoxy group, a substituted or an unsubstituted phenyl group, or a substituted or an unsubstituted phenoxy group; R3 represents a hydrogen atom, a substituted or an unsubstituted alkyl group, a substituted or an unsubstituted alkoxy group, a substituted or an unsubstituted phenyl group, a substituted or an unsubstituted phenoxy group, or has the following formula (2): wherein each of R4 and R5 represents a substituted or an unsubstituted alkyl group, or a substituted or an unsubstituted phenyl group; 1 represents an integer of from 1 to 4; and each of m and n represents an integer of from 1 to 5.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 15, 2012
    Inventors: Ryota ARAI, Tomoyuki Shimada