Carbazole Containing Or Derivative Patents (Class 430/58.6)
  • Patent number: 10890854
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; a photosensitive layer provided on the conductive substrate; and an undercoating layer that is provided between the conductive substrate and the photosensitive layer and includes a charge transport material containing at least one of imide compounds represented by Formula (1) or (2): (in Formulas (1) and (2), R10, R11, R20 or R21 independently represents a group represented by Formula (3) or (4) where X represents a monovalent organic group having at least one of an alkyl group, an alkylene group, an ether group, an ester group, and a keto group, a halogen atom, a nitro group, an aralkyl group, or an aryl group, Y represents a sulfur atom or an oxygen atom, n represents an integer of 0 to 2, and when n represents 2, two X's may be the same or different), and an imide compound is represented by Formula (1A) where Ar represents an aromatic group having 6 to 18 carbon atoms except for a tetravalent perylene group, X1 and X2 each independ
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: January 12, 2021
    Assignee: FUJI XEROX CO.. LTD.
    Inventors: Masahiro Iwasaki, Ryosuke Fujii, Kenji Kajiwara, Wataru Yamada
  • Patent number: 10754266
    Abstract: An electrophotographic photoreceptor includes a conductive substrate, an undercoating layer that is disposed on the conductive substrate, and a photosensitive layer that is disposed on the undercoating layer, in which the undercoating layer contains at least one perinone compound selected from the group consisting of a compound represented by Formula (1) and a compound represented by Formula (2) which are shown below, and polyurethane, contains at least one perinone compound selected from the group consisting of the compounds represented by Formulas (1) and (2), and at least one acceptor compound selected from the group consisting of compounds represented by Formula (3) to (15) which are shown in the specification, or contains a resin obtained by polymerizing a diallyl phthalate compound and a charge transporting material.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: August 25, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masahiro Iwasaki, Wataru Yamada, Kenji Kajiwara, Kota Maki
  • Patent number: 10642173
    Abstract: An electrophotographic photoreceptor includes a conductive substrate, an undercoat layer on the conductive substrate, and a photosensitive layer on the undercoat layer. The undercoat layer contains at least one perinone compound selected from the group consisting of a compound represented by general formula (1) below and a compound represented by general formula (2) below, an amine compound (A) having an ionization potential of 5.4 eV or more and 5.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: May 5, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masahiro Iwasaki, Kota Maki, Kenji Kajiwara, Wataru Yamada
  • Patent number: 9766561
    Abstract: The present invention provides an electrophotographic photosensitive member including a support, and a photosensitive layer on the support. The photosensitive layer has a charge generating layer containing a charge generating material and a charge transporting layer containing a charge transporting material, in this order. The charge transporting layer contains (?) a specific polycarbonate resin or a specific polyester resin, (?) the charge transporting material, (?) a methoxybenzene, and (?) a methoxybenzene, a methoxycyclohexane or a methylhexanol having a substituent. The content W? of the (?) is 0.001% by mass or more and 1% by mass or less based on the total mass of the charge transporting layer.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: September 19, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koji Takahashi, Naoaki Ichihashi, Tsuyoshi Shimada
  • Patent number: 9660205
    Abstract: Coatings are applied on a flexible substrate using atomic layer deposition and molecular layer deposition methods. The coatings have thickness of up to 100 nanometers. The coatings include layers of an inorganic material such as alumina, which are separated by flexibilizing layers that are deposited with covalent chemical linkage to the inorganic material and which are one or more of silica deposited by an atomic layer deposition process; an organic polymer that is deposited by a molecular layer deposition process, or a hybrid organic-inorganic polymer that is deposited by an molecular layer deposition process.
    Type: Grant
    Filed: June 22, 2008
    Date of Patent: May 23, 2017
    Assignee: Regents of the University of Colorado
    Inventors: Steven M. George, Arrelaine Allen Dameron, Beau B. Burton, Markus D. Groner
  • Patent number: 8771909
    Abstract: An electrophotographic photoconductor including: an electrically conductive substrate; and at least a photoconductive layer on the electrically conductive substrate, wherein the electrophotographic photoconductor includes an uppermost surface layer, and the uppermost surface layer includes an inorganic filler, an acidic disperser and a three-dimensionally crosslinked polymer, wherein the three-dimensionally crosslinked polymer is formed through polymerization among compounds each containing a charge transporting compound and three or more [(tetrahydro-2H-pyran-2-yl)oxy]methyl groups where the charge transporting compound has one or more aromatic rings and the [(tetrahydro-2H-pyran-2-yl)oxy]methyl groups are bound to the aromatic rings of the charge transporting compound, and wherein the polymerization proceeds after some of the [(tetrahydro-2H-pyran-2-yl)oxy]methyl groups have been partially cleaved and eliminated with an acid catalyst.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: July 8, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuusuke Koizuka, Yuuji Tanaka, Kazukiyo Nagai, Tetsuro Suzuki
  • 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: 8309286
    Abstract: The invention provides an electrophotographic photoreceptor having at least a conductive substrate and a photosensitive layer formed on the conductive substrate wherein the outermost surface layer of the photoreceptor is composed of a cured material containing at least one compound represented by the formula (I) and a surfactant that contains, in the molecule thereof, at least one structure selected from (A) a structure that is obtained by polymerizing an acrylic monomer having a fluorine atom, (B) a structure having a carbon-carbon double bond and a fluorine atom, (C) an alkyleneoxide structure, and (D) a structure having a carbon-carbon triple bond and a hydroxy group. In formula (I), Q is an organic group having a valency of n and having hole transportability, R is a hydrogen atom or an alkyl group, L is a divalent organic group, n is 1 or more, and j is 0 or 1.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: November 13, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Wataru Yamada, Katsumi Nukada, Takatsugu Doi, Akira Hirano, Hitoshi Takimoto
  • Patent number: 7989127
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the charge transport layer contains a carbazole.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: August 2, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Terry L Street, Terry L Bluhm, Kent J Evans, Edward F Grabowski, Susan M Vandusen, Min-Hong Fu, Kathleen M Carmichael
  • Patent number: 7727690
    Abstract: Disclosed are a monomer of iridium complex having a fluoro group as a functional group, a monomer of carbazole derivative having a hydroxy group as the functional group, and a copolymer containing the monomers in its main chain. The iridium complex used as a phosphorescent material and the carbazole derivative having an excellent hole transporting capability are synthesized as the monomer to form the copolymer. The content of iridium complex is easily controlled, and the carbazole derivative and iridium complex are contained in the main chain during the copolymer formation, thereby capable of manufacturing a light emitting device with higher heat resistance and chemical stability.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: June 1, 2010
    Assignee: Gwangju Institute of Science and Technology
    Inventors: Jae-Suk Lee, Nam-Goo Kang, Hyo-Jin Jeon
  • Patent number: 7674565
    Abstract: A photoconductive having an overcoat layer that includes a cured or substantially crosslinked product of at least a melamine-formaldehyde resin and a charge transport compound, and an optional phenol compound.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: March 9, 2010
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu
  • Patent number: 7670740
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, at least one charge transport layer comprised of at least one charge transport component, and an overcoating layer in contact with and contiguous to the top charge transport layer, and which overcoating is comprised of a polymer, an optional overcoating charge transport component, and needle shaped particles with an aspect ratio of from 2 to about 200.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: March 2, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Daniel V. Levy, Liang-Bih Lin, Lin Ma
  • Publication number: 20100014889
    Abstract: The present invention provides a single-layer electrophotographic photoreceptor provided with a single-layer photosensitive layer that adapts to an exposing source emitting a laser beam with wavelengths of from 400 nm to 450 nm inclusive and is laminated on a conductive substrate, the single-layer photosensitive layer comprising: an enamine-type compound that functions as both a charge generation material and a charge transport material and is represented by the following general formula (1); and a perylene-type compound that functions as both an electron-transport material and a sensitizer and is represented by the following general formula (2):
    Type: Application
    Filed: June 17, 2009
    Publication date: January 21, 2010
    Inventors: Koichi TORIYAMA, Mami Adachi
  • Publication number: 20090274970
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the charge transport layer contains a carbazole.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Terry L. Street, Terry L. Bluhm, Kent J. Evans, Edward F. Grabowski, Susan M. Vandusen, Min-Hong Fu, Kathleen M Carmichael
  • Publication number: 20090226829
    Abstract: Described herein are photoreceptor devices that include aligned domains of charge transport materials that have a pi-pi orbital overlap.
    Type: Application
    Filed: October 1, 2008
    Publication date: September 10, 2009
    Applicant: XEROX CORPORATION
    Inventors: Hany AZIZ, Kathy L. DE JONG
  • Patent number: 7547842
    Abstract: Disclosed herein is an organic electronic device comprising a charge transport layer comprising a host charge transport material and a guest charge transport material, wherein the guest material is not homogeneously distributed in the host material and is spatially doped within the host material. The charge transport layer may be either a hole or electron transport layer and is useful in a variety of organic electronic devices.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: June 16, 2009
    Inventor: Ying Wang
  • Patent number: 7521162
    Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where Y1 and Y7 comprise, each independently, a carbazolyl group; X1 and X2, each independently, are a bridging group; E1 and E2, comprise, each independently, an epoxy group; and Z is a linking group; and (b) a charge generating compound. Organophotoreceptors with the charge transport material crosslinked to a polymeric binder are also described. Corresponding electrophotographic apparatuses and imaging methods are described.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: April 21, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Vytautas Getautis, Tadas Malinauskas, Edmundas Montrimas, Jonas Sidaravicius
  • Publication number: 20090068577
    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: Application
    Filed: September 5, 2008
    Publication date: March 12, 2009
    Applicant: RICOH COMPANY, LTD.
    Inventors: Masafumi OHTA, Tomoyuki SHIMADA, Yuuji TANAKA, Eiji KURIMOTO, Keisuke SHIMOYAMA
  • Patent number: 7479357
    Abstract: An organophotoreceptor that includes: (a) a charge transport material having the formula wherein A is selected from heterocyclic groups, naphthyl group, alkylsulfonylphenyl, stilbenyl or the group X, wherein X is represented by the formula B is selected from hydrogen, alkyl group, and an aryl group, with the proviso that when A is naphthyl, B is naphthyl; or where R1 is selected from the group consisting of N-pyrrolyl, N-pyrazolyl, N-tetrazolyl, N-indolyl, N-carbazolyl, N-triazolyl, N-imidazolyl, N-benzimidazolyl, N-indazolyl, and N-benzotriazolyl group, and R3 is a 9-fluorenone group. (b) a charge generating compound; and (c) an electrically conductive substrate.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: January 20, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski, Alan R. Katritzky, Ritu Jain, Rexiat Maimait, Anatoliy V. Vakulenko
  • Publication number: 20080305415
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, at least one charge transport layer comprised of at least one charge transport component, and an overcoating layer in contact with and contiguous to the top charge transport layer, and which overcoating is comprised of a polymer, an optional overcoating charge transport component, and needle shaped particles with an aspect ratio of from 2 to about 200.
    Type: Application
    Filed: June 11, 2007
    Publication date: December 11, 2008
    Inventors: Jin Wu, Daniel V. Levy, Liang-Bih Lin, Lin Ma
  • Publication number: 20080299472
    Abstract: A coating composition that contains a mixture of an alkyl alcohol, a glycol monoether, a charge transport component, a crosslinking component, and at least one hydroxyl containing polymer, and a photoconductor thereof with a supporting substrate, a photogenerating layer, and at least one charge transport layer, and an overcoating layer in contact with and contiguous to the charge transport layer, and which overcoating is comprised of a mixture of an alkyl alcohol, a glycol monoether, an acrylated polyol, a polyalkylene glycol, a crosslinking component, and a charge transport component.
    Type: Application
    Filed: May 31, 2007
    Publication date: December 4, 2008
    Inventors: Kathy L. DeJong, Nan-Xing Hu, Hany Aziz, Jennifer A. Coggan, Johann Junginger, Ah-Mee Hor, John F. Yanus, Kenny-Tuan Dinh
  • Patent number: 7452641
    Abstract: Charge transport compounds are described that have a multiple number of hydrazone-bridged (N,N-disubstituted)arylamine groups connected by a central bridging group. Examples of charge transport compounds of this invention are those having the following generic formula: (R-Q)n-Y where R is an (N,N-disubstituted)arylamine group; Q comprises an aliphatic or aromatic hydrazone linking group; n is 2; and Y comprises a bridging group comprising an aryl group having the formula —Ar1-G-Ar2— where Ar1 and Ar2 are, each independently, an arylene group and G comprises a bond, O, S, —SO2—, an imine group, an alkylene group, or an aromatic group.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: November 18, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nusrallah Jubran, Hwan Koo Lee, Kam W. Law, Edita Jasiukaityte, Jolita Ostrauskaite, Juozas V. Grazulevicius, Jonas Sidaravicius
  • Patent number: 7427440
    Abstract: An imaging member containing a substrate, and an outer layer containing a polyether lubricant, and an image forming apparatus for forming images on a recording medium including the imaging member above, a development component to apply a developer material to said charge-retentive surface to develop said electrostatic latent image to form a developed image on said charge-retentive surface; a transfer component for transferring said developed image from said charge-retentive surface to another member or a copy substrate; and a fusing member to fuse said developed image to said copy substrate.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: September 23, 2008
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Geoffrey M T. Foley, Liang-Bih Lin, Edward C. Savage, Robert P. Altavela, Marc J. Livecchi
  • Patent number: 7358014
    Abstract: A novel charge transport compound, a novel process using that novel compound and an organophotoreceptor includes: (a) a novel charge transport compound having the formula where R1 and R2 are selected so that R1 and R2 form, with the included nitrogen atom, a group selected from the group consisting of heterocyclic rings, aromatic rings, and dinaphthylamine; or R1 comprises an aryl group and R2 comprises a group selected from the group consisting of sulfolanyl, pyrrolyl, pyrazolyl, benzotriazolyl, stilbenyl, tetrazolyl, and group A, wherein group A is represented by the structure or R1 comprises hydrogen, alkyl group, aryl group and R2 comprises sulfonylphenyl. R3 is hydrogen, alkyl group, aryl group, a heterocyclic group or a hydrocarbon group; and Q is a 3-carbazole group; (b) a charge generating compound; and (c) an electrically conductive substrate.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: April 15, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski, Alan R. Katritzky, Ritu Jain, Rexiat Maimait
  • Patent number: 7329722
    Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a polymeric charge transport material having the formula where n is a distribution of integers between 1 and 100,000 with an average value of greater than one; Y comprises an aromatic group; and X is a bond or a linking group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods and methods of making the polymeric charge transport material are described.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: February 12, 2008
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Violeta Vaitkeviciene, Sauljus Grigalevicius, Juozas V. Grazulevicius, Valentas Gaidelis, Robertas Mald{hacek over (z)}ius, Zbigniew Tokarski, Nusrallah Jubran
  • Publication number: 20080026308
    Abstract: A photoconductive having an overcoat layer that includes a cured or substantially crosslinked product of at least a melamine-formaldehyde resin and a charge transport compound, and an optional phenol compound.
    Type: Application
    Filed: July 25, 2006
    Publication date: January 31, 2008
    Applicant: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu
  • Patent number: 7300731
    Abstract: The present invention relates to new a charge transport layer that includes first charge transport material which is spatially doped with a second charge transport material. The charge transport layer may either be a hole or electron transport layer and is useful in organic electronic devices.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: November 27, 2007
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Ying Wang
  • Publication number: 20070141488
    Abstract: In imaging member comprising a charge generating layer, a charge transport layers and an optional barrier layer between the charge generating layer and the charge transport layer. The charge transport layer may comprise a first and a second or more layers, wherein the first layer comprises a film-forming polymer having hole-transporting capability, but does not contain charge transport molecules.
    Type: Application
    Filed: June 20, 2006
    Publication date: June 21, 2007
    Inventor: Robert C.U. Yu
  • Patent number: 7169519
    Abstract: A double-layered positively-charged organic photoreceptor t does not suffer from contamination caused by charge transport compounds that dissolve out during coating of a charge generating layer, and in which the charge generating layer and a charge transport layer have suitable interfacial properties for effective charge transfer. The composition that forms a charge transport layer on an electroconductive support contains a first charge transport compound that is soluble in an acetate solvent, a second charge transport compound that is insoluble in an acetate solvent, a binder resin, and an organic solvent. The method of manufacturing the photoreceptor includes: coating a surface of an electroconductive support with the charge transport layer forming composition and drying the surface to form a charge transport layer; and coating a surface of the charge transport layer with a charge generating layer forming composition and drying the surface to form a charge generating layer.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: January 30, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam-jeong Lee, Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee, Hae-ree Joo, Beom-jun Kim
  • Patent number: 7118839
    Abstract: An organophotoreceptor that includes: (a) a charge transport compound having the formula where n is an integer between 2 and 6, inclusive; R1 is an aryl group; R2 is a sulfolanyl group; a pyrrolyl group; a tetrazolyl group; a benzotriazolyl group; a stilbenyl group; an alkylsulfonylphenyl group, an arylsulfonylphenyl; a pyrazolyl group; or group A, where A is with the proviso that when R2 is an alkylsulfonylphenyl group or an arylsulfonylphenyl, R1 may be hydrogen, an alkyl group, or an aryl group; X is an alkylene linking group as described in the specification; and Y is a bond, C, N, O, S, a —(CH2)p— group where p is an integer between 0 and 10, an aryl group, a cycloalkyl group, a cyclosiloxyl, a heterocyclic group, or a CR7 group where R7 is H, alkyl group, or aryl group; (b) a charge generating compound; and (c) an electrically conductive substrate.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: October 10, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski
  • Patent number: 7112391
    Abstract: Charge transport compounds are described that have a multiple number of hydrazone-bridged (N,N-disubstituted)arylamine groups connected by a central bridging group. Examples of charge transport compounds of this invention are those having the following generic formula: (R—Q)n-Y where R is an (N,N-disubstituted)arylamine group; Q comprises an aromatic hydrazone linking group; Y comprises a bridging group between R—Q—groups; and n is an integer between 2 and 6. An organic photoreceptor includes (a) that compound and (b) a charge generating compound; and (c) an electrically conductive substrate.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: September 26, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nusrallah Jubran, Hwan Koo Lee, Kam W. Law
  • Patent number: 7045261
    Abstract: In an electrophotographic photosensitive member having a support, and provided thereon a photosensitive layer, a surface layer of the electrophotographic photosensitive member contains a high-molecular-weight charge-transporting material having a weight-average molecular weight Mw of from 1,000 or more to 9,000 or less, and the ratio of the weight-average molecular weight Mw of the high-molecular-weight charge-transporting material to a number-average molecular weight Mn of the high-molecular-weight charge-transporting material, Mw/Mn, is from more than 1.00 to 1.10 or less. Also disclosed are a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: May 16, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takakazu Tanaka, Itaru Takaya, Harunobu Ogaki, Kenichi Kaku
  • Patent number: 7037632
    Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where the formula is described in the especification; and ?(b) a charge generating compound.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: May 2, 2006
    Assignee: Samsung Electronics Co. Ltd.
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
  • Patent number: 7011917
    Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula ?where n is an integer between 2 and 6, inclusive; R1 and R2 are, independently, H, halogen, carboxyl, hydroxyl, thiol, cyano, nitro, aldehyde group, ketone group, an ether group, an ester group, a carbonyl group, an alkyl group, an alkaryl group, or an aryl group; X is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 0 and 20, inclusive, and one or more of the methylene groups can be optionally replaced by O, S, C?O, O?S?O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR3 group, a CHR4 group, or a CR5R6 group where R3, R4, R5, and R6 are, independently, H, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; Y comprises a bond, C, N, O, S, a branched or linear —(CH2)p— gr
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: March 14, 2006
    Assignee: Samsung Electronics Co. Ltd.
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
  • Patent number: 7001699
    Abstract: In an electrophotographic photosensitive member having a support, and provided thereon a photosensitive layer, a surface layer of the electrophotographic photosensitive member contains an electrically insulating binder resin and a random-copolymer type high-molecular-weight charge-transporting material having two kinds of specific repeating structural units. Also disclosed are a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: February 21, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takakazu Tanaka, Akira Yoshida, Hidetoshi Hirano, Yuka Ishiduka, Harunobu Ogaki
  • Patent number: 6969573
    Abstract: An electrostatographic article including: a substrate; a charge generator layer overcoated on the substrate and which layer is sensitive to blue light; and a charge transport layer overcoated on the charge generator layer and which charge transport layer is transparent to blue light.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: November 29, 2005
    Assignee: Xerox Corporation
    Inventors: Timothy P. Bender, John F. Graham
  • Patent number: 6887634
    Abstract: Charge transport compounds are described that have a multiple number of hydrazone-bridged (N,N-disubstituted)arylamine groups connected by a central bridging group. Examples of charge transport compounds of this invention are those having the following generic formula: (R-Q)n-Y where R is an (N,N-disubstituted)arylamine group; Q comprises an aromatic hydrazone linking group; Y comprises a bridging group between R-Q- groups; and n is an integer between 2 and 6. An organic photoreceptor includes (a) that compound and (b) a charge generating compound; and (c) an electrically conductive substrate.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: May 3, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nusrallah Jubran, Hwan Koo Lee, Kam W. Law
  • Patent number: 6864025
    Abstract: This invention relates to a novel organophotoreceptor that includes: (a) a charge transport composition comprising molecules having the formula where the average n is between 1 and 1000; R1, R2, R3, and R4 are, independently, hydrogen, a branched or linear alkyl group (e.g., a C1-C30 alkyl group), a branched or linear unsaturated hydrocarbon group, an ether group, a cycloalkyl group (e.g. a cyclohexyl group), or an aryl group (e.g., a phenyl or naphthyl group); X is a divalent carbazole group or a divalent biscarbazole alkane group; Y is a divalent sulfonyldiphenylene group; Z is C(R4)—X—C(R3)?O double-bonded to the adjacent N or two hydrogens where each hydrogen is independently single-bonded to the adjacent N; and Q is O or N—N(R1)—Y—N(R2)—NH2; (b) a charge generating compound; and (c) an electrically conductive substrate over which the charge transport composition and the charge generating compound are located.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: March 8, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski
  • Patent number: 6835513
    Abstract: Improved organophotoreceptors have: (a) a charge transport compound having the formula: where R1 is hydrogen, a branched or linear alkyl group, a branched or linear unsaturated hydrocarbon group, an ether group, or an aryl group; and R2 and R3 independently have a structure of: in which Ar is selected form the group consisting of; R4 is a hydrogen, or an aromatic group; (b) a charge generating compound; and (c) an electrically conductive substrate.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: December 28, 2004
    Assignee: Samsung Electronic Co., Ltd.
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
  • Patent number: 6806368
    Abstract: Perylene-3,4:9,10-tetracarboxylic diimides of the general formula I where R1, R2, R3 and R4 are independently hydrogen, chlorine, bromine or substituted or unsubstituted aryloxy, arylthio, arylamino, hetaryloxy or hetarylthio; R5, R6, R7, R8, R9 and R10 are independently hydrogen or long-chain alkyl, alkoxy or alkylthio whose carbon chain may in each case contain up to four double bonds, with the proviso that at least four of these radicals are not hydrogen are prepared and used as liquid-crystalline materials for electronic, optoelectronic and photonic applications, for coloration of macromolecular organic and of inorganic materials, as fluorescent dyes and as laser dyes and also as organic materials for solar collectors and electroluminescence applications.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: October 19, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Frank Würthner, Christoph Thalacker
  • Patent number: 6749978
    Abstract: Charge transport compounds are described that have a multiple number of hydrazone-bridged heterocyclic groups (especially julolidine groups, carbazole groups, triarylamine groups and (N,N-disubstituted)arylamine groups such as dialkarylamine groups (e.g. dimethylphenylamine; methylethylphenylamine, dipropylphenylamine, ethylepropylphenylamine, ethylbutylnaphthylamine, etc.), alkyldiarylamine groups (e.g. methyldiphenylamino, ethyldiphenylamino, etc), and triarylamino groups (e.g., triphenyl amino, trinaphthylamino, etc)) connected by a central bridging group.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: June 15, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam Law, Vytautas Getautis, Jonas Sidaravicius, Osvaldas Paliulis, Valentas Gaidelis, Vygintas Jankauskas
  • Publication number: 20040081902
    Abstract: A double-layered positively-charged organic photoreceptor t does not suffer from contamination caused by charge transport compounds that dissolve out during coating of a charge generating layer, and in which the charge generating layer and a charge transport layer have suitable interfacial properties for effective charge transfer. The composition that forms a charge transport layer on an electroconductive support contains a first charge transport compound that is soluble in an acetate solvent, a second charge transport compound that is insoluble in an acetate solvent, a binder resin, and an organic solvent. The method of manufacturing the photoreceptor includes: coating a surface of an electroconductive support with the charge transport layer forming composition and drying the surface to form a charge transport layer; and coating a surface of the charge transport layer with a charge generating layer forming composition and drying the surface to form a charge generating layer.
    Type: Application
    Filed: October 10, 2003
    Publication date: April 29, 2004
    Applicant: SAMSUNG Electronics Co., Ltd.
    Inventors: Nam-Jeong Lee, Saburo Yokota, Kyung-Yol Yon, Hwan-Koo Lee, Hae-Ree Joo, Beom-Jun Kim
  • Publication number: 20040063012
    Abstract: An improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate wherein the photoconductive element has
    Type: Application
    Filed: June 9, 2003
    Publication date: April 1, 2004
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
  • Publication number: 20040048179
    Abstract: In an electrophotographic photosensitive member having a support, and provided thereon a photosensitive layer, a surface layer of the electrophotographic photosensitive member contains a high-molecular-weight charge-transporting material having a weight-average molecular weight Mw of from 1,000 or more to 9,000 or less, and the ratio of the weight-average molecular weight Mw of the high-molecular-weight charge-transporting material to a number-average molecular weight Mn of the high-molecular-weight charge-transporting material, Mw/Mn, is from more than 1.00 to 1.10 or less. Also disclosed are a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member.
    Type: Application
    Filed: August 26, 2003
    Publication date: March 11, 2004
    Inventors: Takakazu Tanaka, Itaru Takaya, Harunobu Ogaki, Kenichi Kaku
  • Patent number: 6689523
    Abstract: This invention relates to an organophotoreceptor that includes: (a) a charge transport compound having the formula  where R1 and R2 are, independently, a carbazolyl group; R3 and R4 are, independently, hydrogen, an alkyl group, an aryl group, or a heterocyclic group; and X is a sulfonyldiphenylene group; (b) a charge generating compound; and (c) an electrically conductive substrate.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: February 10, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski
  • Publication number: 20040002013
    Abstract: An electrostatographic article including: a substrate; a charge generator layer overcoated on the substrate and which layer is sensitive to blue light; and a charge transport layer overcoated on the charge generator layer and which charge transport layer is transparent to blue light.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 1, 2004
    Applicant: Xerox Corporation
    Inventors: Timothy P. Bender, John F. Graham
  • Patent number: 6670085
    Abstract: Charge transport compounds are described that have a multiple number of hydrazone-bridged heterocyclic groups (especially julolidine, carbazole and/or triarylmethane groups) connected by a central bridging group.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: December 30, 2003
    Assignee: Samsung Electronics Co. Ltd
    Inventors: Nusrallah Jubran, Hwan Koo Lee, Kam W. Law
  • Patent number: 6645686
    Abstract: An electrophotographic imaging member comprises a substrate, a charge generating layer, and a charge transport layer. The charge transport layer comprises a binder and charge transport molecules, wherein the binder eliminates or minimizes crystallization of the charge transport molecules. Optionally, an electrophotographic imaging member comprises a substrate and a single charge generating and charge transport layer. The single charge generating and charge transport layer comprises a binder, charge generating molecules and charge transport molecules, wherein the binder eliminates or minimizes crystallization of the charge transport molecules. Specific binders are PCZ-800, a PCZ-500, or a PCZ-400 polycarbonate resin.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: November 11, 2003
    Assignee: Xerox Corporation
    Inventors: Min-Hong Fu, Colleen A. Helbig, Kent J. Evans, Kathleen M. Carmichael, June E. Schneider, David M. Skinner, Alfred H. Willnow
  • Publication number: 20030207188
    Abstract: Improved organophotoreceptors have:
    Type: Application
    Filed: March 6, 2003
    Publication date: November 6, 2003
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
  • Publication number: 20030203296
    Abstract: This invention relates to a novel organophotoreceptor that includes: (a) a charge transport composition comprising molecules having the formula 1
    Type: Application
    Filed: March 10, 2003
    Publication date: October 30, 2003
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski