Additional Diverse Ring Hetero Atom In The Hetero Ring Patents (Class 430/77)
  • Patent number: 10115903
    Abstract: The present invention relates to organic electroluminescent devices which comprise aromatic ring systems with two or three condensed rings as emitter materials, and to their possible uses.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: October 30, 2018
    Assignee: Merck Patent GmbH
    Inventors: Junyou Pan, Martin Engel, Herwig Buchholz
  • Patent number: 9555106
    Abstract: Disclosed herein are compounds and related compositions for the treatment of viral infection, including RNA viral infection, and compounds that can modulate the RIG-I pathway in vertebrate cells, including compounds that can activate the RIG-I pathway.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: January 31, 2017
    Assignee: Kineta, Inc.
    Inventors: Shawn P. Iadonato, Kristin Bedard, Myra Wang Imanaka, Kerry W. Fowler
  • Patent number: 9005856
    Abstract: A hydroxygallium porphyrazine derivative mixture including: a plurality of different hydroxygallium porphyrazine derivatives each represented by the following General Formula (A-2): where A1, A2, A3, A4, B1, B2, B3 and B4 each independently represent a nitrogen atom or a carbon atom bonded to hydrogen, with the proviso that both of A1 and B1 are carbon atoms each bonded to hydrogen or only one of A1 and B1 is a nitrogen atom, both of A2 and B2 are carbon atoms each bonded to hydrogen or only one of A2 and B2 is a nitrogen atom, both of A3 and B3 are carbon atoms each bonded to hydrogen or only one of A3 and B3 is a nitrogen atom, and both of A4 and B4 are carbon atoms each bonded to hydrogen or only one of A4 and B4 is a nitrogen atom.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: April 14, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoyuki Shimada, Ryota Arai
  • Publication number: 20150079509
    Abstract: A photoconductor, which contains an electrically conductive support, and at least a photoconductive layer provided over the electrically conductive support, wherein the photoconductive layer contains a compound represented by the following general formula (1): where R1, R2, R3, R4, R5 and R6 are each independently a hydrogen atom, a halogen atom, an alkyl group, an aralkyl group, an alkoxy group, or an aralkyloxy group; n, a, b, c, and d are each independently an integer of 1 to 4 and m is 1 or 2; and a plurality of R1, R2, R3, R4, R5 or R6 may be the same or different when n, m, a, b, c, or d is an integer of 2 or greater.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 19, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventor: Tomoyuki Shimada
  • Patent number: 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
  • 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
  • Publication number: 20130316279
    Abstract: A composition according to the present invention contains at least a triarylamine compound and at least one bicyclic compound selected from the group consisting of those of the general formulas [1] to [4], wherein the triaryl amine compound is dissolved in the at least one bicyclic compound where R1 each independently represents a hydrogen atom, a methyl group, an ethyl group, a methoxy group, an ethoxy group, a fluorine atom or a chlorine atom; A, B, C and F each independently represents either —CR22—, —O— or —NR2—; D and E each independently represents either —CR2? or —N?; G represents —CR22—; H represents —CR2?; and R2 represents a hydrogen atom, a methyl group or a halogen atom.
    Type: Application
    Filed: March 27, 2013
    Publication date: November 28, 2013
    Applicant: Central Glass Company, Limited
    Inventors: Hideaki IMURA, Masamune Okamoto, Naoto Takada
  • Patent number: 8309696
    Abstract: The present invention provides an azo pigment comprising a group represented by the general formula (1) below, an electrophotographic photosensitive member comprising an intermediate layer comprising the azo pigment, and a process cartridge and an electrophotographic apparatus that comprise the electrophotographic photosensitive member.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: November 13, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Fujii, Mai Murakami
  • Patent number: 8288066
    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: January 5, 2006
    Date of Patent: October 16, 2012
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yuka Nagao, Teruyuki Mitsumori, Masayuki Hiroi
  • Publication number: 20120231380
    Abstract: A hydroxygallium porphyrazine derivative mixture including: a plurality of different hydroxygallium porphyrazine derivatives each represented by the following General Formula (A-2): where A1, A2, A3, A4, B1, B2, B3 and B4 each independently represent a nitrogen atom or a carbon atom bonded to hydrogen, with the proviso that both of A1 and B1 are carbon atoms each bonded to hydrogen or only one of A1 and B1 is a nitrogen atom, both of A2 and B2 are carbon atoms each bonded to hydrogen or only one of A2 and B2 is a nitrogen atom, both of A3 and B3 are carbon atoms each bonded to hydrogen or only one of A3 and B3 is a nitrogen atom, and both of A4 and B4 are carbon atoms each bonded to hydrogen or only one of A4 and B4 is a nitrogen atom.
    Type: Application
    Filed: March 7, 2012
    Publication date: September 13, 2012
    Inventors: Tomoyuki SHIMADA, Ryota Arai
  • Patent number: 8243273
    Abstract: A semiconductor wafer may include a dummy field configured to enable overlay measurements. The enhanced dummy field may include a plurality of encoding blocs that enable OVL measurements to be made throughout the enhanced dummy field.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: August 14, 2012
    Assignee: KLA-Tencor Corporation
    Inventors: Vladimir Levinski, Michael Adel, Mark Ghinovker, Alexander Svizher
  • Patent number: 8029955
    Abstract: Provide is an electrophotographic photoreceptor exhibiting excellent evenness of halftone images together with fine line reproduction, and an image forming method thereof, as to a photoreceptor in which an oxytitanium phthalocyanine pigment having a maximum diffraction peak at a Bragg angle (2?±0.2°) of 27.2° in CuK? X-ray diffraction. Also disclosed is an electrophotographic photoreceptor possessing a body having cylindrical conductive support provided thereon photosensitive layer containing oxytitanium phthalocyanine pigment having maximum diffraction peak at a Bragg angle (2?±0.2°) of 27.2° in CuK? X-ray diffraction, and flanges jointed at both ends of the body, wherein at least one of flanges is fitted with driving shaft having drive hole having at least 3 sides, and a ratio B/A of cross-sectional area B of engaging part of rotation shaft to rotate the electrophotographic photoreceptor with respect to cross-sectional area A of the drive hole is 0.890-0.998.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: October 4, 2011
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Eiichi Sakai, Yoshihiko Eto, Kimiyuki Itou, Akihiko Itami, Takeo Oshiba
  • Patent number: 7897311
    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 photogenerating layer contains a phenothiazine.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: March 1, 2011
    Assignee: XEROX Corporation
    Inventor: Jin Wu
  • Patent number: 7785759
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer containing at least one charge transport component, and wherein the charge transport layer also contains a thiadiazole.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: August 31, 2010
    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
  • Publication number: 20090246667
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer containing at least one charge transport component, and wherein the charge transport layer also contains a thiadiazole.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 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: 20090246666
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one, charge transport layer, such as 1, 2, 3, or 4 layers, and more specifically, 2 layers, and wherein the photogenerating layer contains a thiadiazole.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Markus R. Silvestri, Dale S. Renfer, Ryan J. Ehmann
  • Patent number: 7534541
    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 1 and 10, inclusive; R1 comprises a functional group selected from the group consisting of a reactive ring group, an ethylenically unsaturated group, a reactive polar group, a hydrazone group, and an azine group; R2, R3, R4, R5, and R6 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, a heterocyclic group, or a part of a ring group; X is a bond or a linking group; and Q is O, S, or NR where R is H, an alkyl group, an acyl group, an alkenyl group, an alkynyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: May 19, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Maryte Daskeviciene, Vytautas Getautis, Tadeus Lozovski, Edmundas Montrimas
  • Patent number: 7445877
    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 Y2 comprise, independently, an aromatic group; X1 and X2 are each a linking group; W1 and W2 are each a —(CH2)n— group or a —(CH2)n-1—C(?O)— group, where n is an integer between 1 and 10; Ar1 and Ar2 comprise each a divalent aromatic group; Q1 and Q2 are each O, S, or NR; Z1 and Z2 comprise, independently, a bond, a vinyl group, a —CR1?N—NR2— group, or a —CR3?N—N?CR4— group; and R, R1, R2, R3, and R4 comprise, independently, H, an alkyl group, an alkenyl group, an alkynyl group, an acyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: November 4, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Maryte Daskeviciene, Valentas Gaidelis, Vytautas Getautis, Edmundas Montrimas, Albina Stanisauskaite
  • Publication number: 20080193867
    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: Application
    Filed: January 5, 2006
    Publication date: August 14, 2008
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yuka Nagao, Teruyuki Mitsumori, Masayuki Hiroi
  • Patent number: 7378203
    Abstract: Improved charge transport material comprises the formula: where M comprises a metallocenyl group; Y comprises a functional group selected from the group consisting of a metallocenyl group, a hydrazone group, an azine group, a reactive ring group, an ethylenically unsaturated group, and combinations thereof; R1 and R2 comprise, each independently, H, an organic group, or an organometallic group; and X is a bond, O, S, an aminylene group, a sulfonyl group, an organic linking group, or a combination thereof.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: May 27, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nusrallah Jubran, Patrick Knoll, Vytautas Getautis, Tadas Malinauskas, Maryte Daskeviciene, Edmundas Montrimas, Jonas Sidaravicius
  • Patent number: 7371493
    Abstract: Improved charge transport material having the formula: Y-Z-X-E where E comprises a functional group selected from the group consisting of a reactive ring group, a vinyl ether group, an acrylamido group, and a methacrylamido group; X comprises a bond, O, S, an aminylene group, a sulfonyl group, an organic linking group, or a combination thereof; Z comprises a 1,3,6,8-tetraoxo-1,3,6,8-tetrahydrobenzo[lmn][3,8]phenanthroline-2,7-diyl group; and Y comprises H or an organic group, such as an alkyl group, an aryl group, an aromatic heterocyclic group, and combinations thereof.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: May 13, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Nusrallah Jubran
  • Patent number: 7364825
    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 E comprises a functional group selected from the group consisting of a reactive ring group, an ethylenically unsaturated group, a hydrazone group, and an azine group; R1, R2, and R3 comprise, each independently, H or an organic group; X is a bond or a linking group, with the proviso that when E comprises a reactive ring group, X is a linking group; and Y is a nitrogen-containing aromatic heterocyclic group; and (b) a charge generating compound.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: April 29, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ramunas Lygaitis, Juozas V. Grazulevicius, Valentas Gaidelis, Vygintas Jankauskas
  • Patent number: 7351508
    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 Y comprises an aromatic group; V1 and V2 comprise, each independently, a vinyl containing group; and R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an acyl group, an ether group, an ester group, an alkenyl group, an alkynyl group, a heterocyclic group, an aromatic group, or a part of a ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, electrophotographic imaging methods, and charge transport materials are also described.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: April 1, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Juozas V. Grazulevicius, Gintaras Buika, Vygintas Jankauskas, Valentas Gaidelis, Ruta Budreckiene, Zbigniew Tokarski, Nusrallah Jubran
  • Patent number: 7348116
    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 Y comprises an aromatic heterocyclic group; X is a bond or a linking group; E comprises a reactive ring group or a reactive functional group; and R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an acyl group, an ether group, an alkenyl group, an alkynyl group, a heterocyclic group, an aromatic group, or a part of a ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, electrophotographic imaging methods, and bridged charge transport materials derived form the charge transport material above are also described.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: March 25, 2008
    Assignee: Samsung Electronics, Ltd
    Inventors: Ausra Matoliukstyte, Valentas Gaidelis, Juozas V. Grazulevicius, Vygintas Jankauskas, Beata Klejevskaja, Nusrallah Jubran, Zbigniew Tokarski
  • Patent number: 7297449
    Abstract: There is provided an optical recording medium comprising a recording layer containing a charge-generating material capable of generating a first electric charge and a second electric charge by beam irradiation, the second electric charge having a different polarity from that of the first electric charge, a charge-transport material enabling at least the first electric charge to be transported to isolate the first electric charge and the second electric charge, and a trapping material retaining the first electric charge. The optical characteristics of the recording layer is changed in accordance with changes in spatial distribution of the first and second electric charges, and the trapping material is provided with a conjugated system and with at least one nitrogen-containing heterocyclic group, and bonded through an unsaturated carbon atom of the heterocyclic group to the conjugated system.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: November 20, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takayuki Tsukamoto, Akiko Hirao, Kazuki Matsumoto, Hideyuki Nishizawa
  • Patent number: 7261987
    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 Y comprises an aromatic group; X is a —(CH2)n— group, where n is an integer between 1 and 10, inclusive, and one or more of the methylene groups is optionally replaced by another atom or group; Q1, Q2, and Q3 are, each independently, O, S, or NR; and R, R1, R2, and R3 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an amino group, an acyl group, an alkoxy group, an alkylsulfanyl group, an aromatic group, or a heterocyclic group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: August 28, 2007
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Nusrallah Jubran, Zbigniew Tokarski
  • Patent number: 7220523
    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 R1, R2, R3, R4, R5, and R6 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; X1 and X2 are, each independently, a —(CH2)n— group, where n is an integer between 1 and 10, inclusive; X3 is linking group; and Q1, Q2, Q3, Q4, Q5, and Q6 are, each independently, O, S, NR, NC(?O)R? where R and R? are, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: May 22, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Zbigniew Tokarski, Nusrallah Jubran, Ramunas Lygaitis, Juozas V. Grazulevicius, Edmundas Montrimas, Jonas Sidaravicius
  • Patent number: 7189482
    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 compound having the formula where R1 and R2 are, independently, hydrogen, an alkyl group, an alkaryl group or an aryl group; X is an aromatic group; Y is an (N,N-disubstituted)arylamine; Z is (CH2)m group where m is an integer between 0 and 30 where one or more of the methylene groups is optionally replaced by O, S, C?O, O?C—O, O?C—NR3, sulfoxide, sulfate, phosphate, an aryl group, urethane, urea, NR4 group, CHR5 group, or CR6R7 group where R3, R4, R5, R6, and R7 are, independently, H, hydroxyl, thiol, an amine group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group, and E is a bond, O, S, C?O, NR8, CR9R10 group, a hetrocyclic group, or an aromatic group where R8, R9, and R10 are, independently, H, an alkyl group, an alkaryl group, or an aryl group; and (b) a charg
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: March 13, 2007
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Maryte Daskeviciene, Ingrida Paulauskaite, Robertas Maldzius, Jonas Sidaravicius
  • Patent number: 7189483
    Abstract: An improved organophotoreceptor includes an electrically conductive substrate and a photoconductive element on the electrically conductive substrate where the photoconductive element comprises: a) a charge transport material having the following formula: where X is a linking group; Y1 and Y2 are, each independently, a phenothiazine group, a phenoxazine group, or a phenazine group; R1, R2, R3, and R4 are, each independently, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; and R5 and R6 are, each independently, a hydrogen, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: March 13, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Almantas Danilevicius, Gintaras Buika, Ramunas Lygaitis, Juozas V. Grazulevicius, Robertas Maldzius, Edmundas Montrimas, Zbigniew Tokarski, Nusrallah Jubran
  • Patent number: 7183028
    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 R1, R2, R3, and R4 are, independently, an alkyl group, an alkaryl group, an aryl group, or a part of a cyclic group; R5 is hydrogen, an alkyl group, an alkaryl group, an aryl group, or a heterocyclic group; X comprises an aromatic group, such as an aryl group or an aromatic heterocyclic group; Y is a linking group; and Z comprises an epoxy group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: February 27, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Zbigniew Tokarski, Nusrallah Jubran, Kam W. Law, Vytautas Getautis, Maryte Daskeviciene, Edmundas Montrimas, Janina Gavutiene
  • Patent number: 7175956
    Abstract: The invention is to provide an organic photoconductive material capable of realizing electrophotographic photoreceptors of high reliability that have high charge potential, high sensitivity, good responsiveness to light and good durability, of which the characteristics do not lower even when they are driven at low temperatures or at high speed and even when they are exposed to light, and to provide an electrophotographic photoreceptor that comprises the material and an image-forming apparatus. An organic photoconductive material of the following general formula (1), for example, an enamine compound of the following structural formula (1-1) is produced.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: February 13, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takatsugu Obata, Akihiro Kondoh, Kazuya Ishida
  • Patent number: 7169521
    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 R1 and R2 are, each independently, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; R3 and R4 are, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; X1 and X2 are, each independently, a linking group; Y1 and Y2, each independently, comprise an arylamine group; and Z is a bridging group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: January 30, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Jonas Sidaravicius, Edmundas Montrimas, Maryte Daskeviciene, Valentas Gaidelis, Vygintas Jankauskas, Albina Stanisauskaite
  • Patent number: 7169520
    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, 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 is 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, hydroxyl group, thiol group, 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— group where p is an integer between 0 and 10, an aromatic group, a cycloalkyl group, a heterocyclic gr
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: January 30, 2007
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Juozas V. Grazulevicius, Vytautas Getautis, Jolita Ostrauskaite, Jurate Simokaitiene, Vygintas Jankauskas
  • Patent number: 7112392
    Abstract: An electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer on the electroconductive substrate, wherein the photosensitive layer includes at least a compound having a substituted or unsubstituted alkylamino group and a charge transport material, and wherein an oxidation potential (Eox1) of the substituted or unsubstituted alkylamino group and an oxidation potential (Eox2) of the charge transport material satisfy the following relationship (I): Eox1?Eox2??0.2.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: September 26, 2006
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoyuki Shimada, Takaaki Ikegami, Yasuo Suzuki
  • Patent number: 7108948
    Abstract: An organophotoreceptor comprises an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having a) a charge transport composition with the formula where Y1 and Y2 are, each independently, an arylamine group; X1 and X2 are, each independently, a linking group; R1 and R2 are, each independently, a hydrogen, an alkyl group, an alkenyl group, a heterocyclic group, an aromatic group; Z is a bridging group; and n is a distribution of integers between 1 and 100,000 with an average value greater than 1; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: September 19, 2006
    Assignee: Samsung Electronics Co., LTD
    Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Juozas V. Grazulevicius, Tadas Malinauskas, Edmundas Montrimas, Valentas Gaidelis
  • Patent number: 7083884
    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 R1 and R2 are, independently, H, 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 1 and 20, inclusive, and one or more of the methylene groups is 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, hydroxyl group, thiol group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; E is an epoxy group; and Z is a phenothiazine group, a phenoxazine group, a phenoxathiin group, a dibenzo(1,4)dioxin group, a thianthrene group, or a phenazine group; and (b) a charge generating compound.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: August 1, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Juozas V. Grazulevicius, Vytautas Getautis, Jolita Ostrauskaite, Jurate Simokaitiene, Edmundas Montrimas
  • Patent number: 7060393
    Abstract: There is provided an optical recording medium comprising a recording layer containing a charge-generating material capable of generating a first electric charge and a second electric charge by beam irradiation, the second electric charge having a different polarity from that of the first electric charge, a charge-transport material enabling at least the first electric charge to be transported to isolate the first electric charge and the second electric charge, and a trapping material retaining the first electric charge. The optical characteristics of the recording layer is changed in accordance with changes in spatial distribution of the first and second electric charges, and the trapping material is provided with a conjugated system and with at least one nitrogen-containing heterocyclic group, and bonded through an unsaturated carbon atom of the heterocyclic group to the conjugated system.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: June 13, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takayuki Tsukamoto, Akiko Hirao, Kazuki Matsumoto, Hideyuki Nishizawa
  • Patent number: 7014968
    Abstract: Improved organophotoreceptor comprises a photoconductive element comprising: (a) a charge transport material having the formula where Y1 and Y2 are, each independently, a bond, —CR1?N—NR2—, or —CR3?N—N?CR4— where R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; X1 and X2 are, each independently, a linking group; T1 and T2 are, each independently, a thiiranyl group, H, an alkyl group, an alkenyl group, or an aromatic group with the proviso that at least one of T1 and T2 is a thiiranyl group; and Ar comprises an aromatic group with the proviso that when both Y1 and Y2 are a bond and one of T1 and T2 is not a thiiranyl group, Ar comprises a bis[(N,N-disubstituted)amino]aromatic group or a bicarbazole group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: March 21, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Osvaldas Paliulis, Edmundas Montrimas, Valentas Gaidelis
  • Patent number: 7011918
    Abstract: This invention includes an organophotoreceptor having an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having a) a polymeric charge transport composition with the formula where Y1 and Y2 are, each independently, a bond, a —CR1?N—NR2— group, or a —CR3?N—N?CR4— group; R, R?, R?, R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an alkenyl group, a heterocyclic group, an aromatic group, or a part of a ring group; X1 and X2 are, each independently, a linking group; T2 comprises a thiiranyl group, H, an alkyl group, an alkenyl group, or an aromatic group; Ar comprises an aromatic group; Z is a bridging group; and n is a distribution of integers between 1 and 100,000 with an average value at least 2; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging processes are also described.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: March 14, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
  • Patent number: 6953957
    Abstract: The invention generally relates to the use of poly-3,3?-dialkyl-2,2?:5?,2?-terthiophenes as charge transport materials or semiconductors in electrooptical, electronic or electroluminescent devices, and to charge transport and semiconducting components and devices comprising poly-3,3?-dialkyl-2,2?:5?,2?-terthiophenes.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: October 11, 2005
    Assignees: Merck Patent GmbH, Siemens AG
    Inventors: Iain McCulloch, Marcus Thompson, Mark Giles, Martin Heeney, Steven Tierney, Henning Rost
  • Publication number: 20040265717
    Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:
    Type: Application
    Filed: January 16, 2004
    Publication date: December 30, 2004
    Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Valentas Gaidelis, Maryte Daskeviciene, Edmundas Montrimas, Ingrida Paulauskaite, Jonas Sidaravicius
  • Publication number: 20040241563
    Abstract: An improved organophotoreceptor includes an electrically conductive substrate and a photoconductive element on the electrically conductive substrate where the photoconductive element comprises:
    Type: Application
    Filed: February 27, 2004
    Publication date: December 2, 2004
    Inventors: Almantas Danilevicius, Gintaras Buika, Ramunas Lygaitis, Juozas V. Grazulevicius, Robertas Maldzius, Edmundas Montrimas, Zbigniew Tokarski, Nusrallah Jubran
  • Publication number: 20040170911
    Abstract: An electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer on the electroconductive substrate, wherein the photosensitive layer includes at least a compound having a substituted or unsubstituted alkylamino group and a charge transport material, and wherein an oxidation potential (Eox1) of the substituted or unsubstituted alkylamino group and an oxidation potential (Eox2) of the charge transport material satisfy the following relationship (I):
    Type: Application
    Filed: February 24, 2004
    Publication date: September 2, 2004
    Inventors: Tomoyuki Shimada, Takaaki Ikegami, Yasuo Suzuki
  • Publication number: 20040101770
    Abstract: The invention is to provide an organic photoconductive material capable of realizing electrophotographic photoreceptors of high reliability that have high charge potential, high sensitivity, good responsiveness to light and good durability, of which the characteristics do not lower even when they are driven at low temperatures or at high speed and even when they are exposed to light, and to provide an electrophotographic photoreceptor that comprises the material and an image-forming apparatus. An organic photoconductive material of the following general formula (1), for example, an enamine compound of the following structural formula (1-1) is produced. Using the organic photoconductive material for the charge-transporting substance to be in a photosensitive layer on a conductive support, an electrophotographic photoreceptor is fabricated, and this is mounted on an image-forming apparatus.
    Type: Application
    Filed: September 3, 2003
    Publication date: May 27, 2004
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Takatsugu Obata, Akihiro Kondoh, Kazuya Ishida
  • Patent number: 6083651
    Abstract: A phenothiazine or phenoxazine derivative represented by the following general formula (1), a charge-transporting material comprising the derivative, and an electrophotographic photoreceptor containing the charge-transporting material are disclosed. The charge-transporting material has good solubility in binder polymers, satisfactory sensitivity, and a low residual potential.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: July 4, 2000
    Assignee: Takasago International Corporation
    Inventors: Tohru Kobayashi, Yoshimasa Matsushima, Hiroshi Sugiyama, Toshimitsu Hagiwara
  • Patent number: 6027840
    Abstract: Disclosed is a solution for forming photoconductive layer for electrophotographically manufacturing a luminescent screen on an interior surface of a faceplate panel for a CRT. The solution consists of 0.01 to 10% by weight of bis dimethyl phenyl diphenyl butatriene, 1 to 30% by weight of polystyrene, 30 to 100% by weight of 2,5-bis(4-diethyl aminophenyl)-1,3,4-oxadiazole, against 100% by weight of polystyrene and the remainder of solvent. The photoconductive layer manufactured using the solution facilitates performing all the processes in a visible light environment with safety in work operations, because the solution contains 2,5-bis(4-diethyl aminophenyl)-1,3,4-oxadiazole, instead of trinitro fluorenone(TNF) of cancer-causing material, as ultraviolet-sensitive material.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: February 22, 2000
    Assignee: Orion Electric Co., Ltd.
    Inventor: Sang Youl Yoon
  • Patent number: 5856471
    Abstract: An electrophotographic photoreceptor comprising a conductive substrate having thereon a photosensitive layer, the photosensitive layer containing a hydroxymetal or hydroxysilicon phthalocyanine pigment represented by formula (I) as a charge generating material, the phthalocyanine pigment having been treated with an orcanometallic compound having a hydrolyzable functional group or a hydrolysis product thereof: ##STR1## wherein Me represents A, Ga, In, Si, Ge or Sn; X representsH, C, Br or I; m represents an integer of from I to 4; and n represents 1 where Me is A, Ga or In, or 2 where Me is Si, Ge or Sn.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: January 5, 1999
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hidemi Nukada, Takahiro Suzuki, Katsumi Nukada, Katsumi Daimon, Yasuo Sakaguchi
  • Patent number: 5837412
    Abstract: An electrophotographic photosensitive member has a support and a photosensitive layer provided thereon. The photosensitive layer contains a hindered phenol compound and a fluorene compound represented by the following formula (1): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently substituted or unsubstituted aryl, and R.sub.5 and R.sub.6 are each independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, or substituted or unsubstituted aralkyl.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: November 17, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Suzuki, Toshihiro Kikuchi, Kazushige Nakamura, Tetsuro Kanemaru, Kouichi Nakata
  • Patent number: 5811212
    Abstract: The present invention provides an electrophotographic photosensitive member containing an azo-calix ?n! arene compound produced by coupling a calix ?n! arene compound and an azonium compound having at least two azo groups. The present invention also provides an electrophotographic apparatus and a process cartridge each produced with the electrophotographic photosensitive member.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: September 22, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masato Tanaka
  • Patent number: 5731078
    Abstract: A coated donor roll comprises a core with a coating, the coating comprising a charge transporting polymer, an organic acid metal salt compound, and iodine.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: March 24, 1998
    Assignee: Xerox Corporation
    Inventors: Bing R. Hsieh, Joan R. Ewing, Damodar M. Pai, Kathyrn A. Wallace, Jerry H. Taylor, Francois Soos, Joseph R. Weber