The Hetero Ring Has At Least Nitrogen As A Ring Hetero Atom Patents (Class 430/76)
  • Patent number: 9346963
    Abstract: A pigment preparation is provided, said preparation comprises an organic pigment comprising a chromophore Q1 and a derivative thereof comprising specific organic substituents via an aliphatic carbon atom in an amount of from 0.1 to 30 mol, based on 100 mol of the organic pigment as well as a process for its preparation and to its use in coloring an organic material such as plastics, coatings or inks.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: May 24, 2016
    Assignee: BASF SE
    Inventors: Philippe Bugnon, Peter Nesvadba
  • Publication number: 20140227005
    Abstract: An image holding member for an image forming apparatus includes a support and a photosensitive layer disposed on the support. The photosensitive layer contains a charge generating material and a compound represented by the following formula (II-1): wherein in the formula (II-1), Y1's each independently represent a substituted or unsubstituted divalent hydrocarbon group; A1 represents a group represented by formula (II-2); R2's each independently represent a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group; m's each independently represent an integer of from 1 to 5; and p represents an integer of from 5 to 5,000.
    Type: Application
    Filed: April 17, 2014
    Publication date: August 14, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hidekazu HIROSE, Ryosaku IGARASHI, Katsuhiro SATO
  • Patent number: 8703372
    Abstract: An electrophotographic photosensitive member includes a support, a charge-generating layer disposed on the support, and a charge-transporting layer disposed on the charge-generating layer, in which the charge-generating layer contains a charge-generating substance and a compound represented by the formula (1). A process cartridge includes the electrophotographic photosensitive member described above. An electrophotographic apparatus includes the electrophotographic photosensitive member described above.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: April 22, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Murakami, Masataka Kawahara, Kaname Watariguchi, Masato Tanaka, Akira Yoshida
  • Publication number: 20130164663
    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: Application
    Filed: May 11, 2012
    Publication date: June 27, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hidekazu HIROSE, Ryosaku IGARASHI, Katsuhiro SATO
  • Patent number: 8372568
    Abstract: The disclosed embodiments are directed to a method for removing photoreceptor coatings from a rigid substrate, wherein the photoreceptor coatings disposed over a substrate of an electrophotographic photoreceptor, in order to recover it for re-use in photoreceptor manufacturing. More specifically, the invention discloses a photoreceptor substrate recovery methodology that includes the creation of an inner release layer over the substrate and followed by subjecting the rejected or used electrophotographic photoreceptor to a step of soaking in a non-toxic and environmentally-friendly stripping solution that separates the coatings from the substrate.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: February 12, 2013
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Kent J. Evans, Yuhua Tong, Nancy L. Belknap, Helen R. Cherniack, Robert P. Altavela, Edward F. Grabowski
  • Patent number: 8227157
    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: Grant
    Filed: June 17, 2009
    Date of Patent: July 24, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Koichi Toriyama, Mami Adachi
  • Patent number: 8216753
    Abstract: There is provided an electroactive material having Formula I wherein: Q is the same or different at each occurrence and can be O, S, Se, Te, NR, SO, SO2, or SiR3; R is the same or different at each occurrence and can be hydrogen, alkyl, aryl, alkenyl, or alkynyl; R1 through R8 are the same or different and can be hydrogen, alkyl, aryl, halogen, hydroxyl, aryloxy, alkoxy, alkenyl, alkynyl, amino, alkylthio, phosphino, silyl, —COR, —COOR, —PO3R2, —OPO3R2, or CN.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: July 10, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventor: Hong Meng
  • Publication number: 20120100475
    Abstract: A photoreceptor charge transport layer containing a spirodilactam and/or a lubricant has superior wear resistance.
    Type: Application
    Filed: October 23, 2010
    Publication date: April 26, 2012
    Applicant: XEROX CORPORATION
    Inventor: Jin Wu
  • 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
  • Publication number: 20110104602
    Abstract: The disclosed embodiments are directed to a method for removing photoreceptor coatings from a rigid substrate, wherein the photoreceptor coatings disposed over a substrate of an electrophotographic photoreceptor, in order to recover it for re-use in photoreceptor manufacturing. More specifically, the invention discloses a photoreceptor substrate recovery methodology that includes the creation of an inner release layer over the substrate and followed by subjecting the rejected or used electrophotographic photoreceptor to a step of soaking in a non-toxic and environmentally-friendly stripping solution that separates the coatings from the substrate.
    Type: Application
    Filed: November 5, 2009
    Publication date: May 5, 2011
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Kent J. Evans, Yuhua Tong, Nancy L. Belknap, Helen R. Cherniack, Robert P. Altavela, Edward F. Grabowski
  • Patent number: 7794907
    Abstract: A hydrazone compound capable of realizing an electrophotographic photoreceptor having good electric properties such as good sensitivity and light responsibility, good electric and mechanical durability and good environment stability, is provided. The hydrazone compound is represented by the following general formula (1). The compound is contained in the charge transporting layer of the electrophotographic photoreceptor.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: September 14, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akihiro Kondoh, Takatsugu Obata
  • Patent number: 7794905
    Abstract: A photoreceptor device having at least one layer that is a self-assembled patterned binder layer, which may include at least one functional material.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: September 14, 2010
    Assignee: Xerox Corporation
    Inventors: Kathy L. De Jong, Hany Aziz
  • Patent number: 7645548
    Abstract: A coating composition having a polymer resin composition containing at lest an acid catalyst and a masking agent, wherein the masking agent is selected from the group consisting of compound A, compound B, and the acylated derivatives of compound A, where compound A is given by the structural formula (I): where X represents a substituent selected from the group consisting of —OR and —NR?R?, wherein R, R?, and R? each independently represent a hydrogen atom or a hydrocarbyl group; and compound B is given by the structural formula (II): where Y and Z independently represent —OH or —NH2.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: January 12, 2010
    Assignee: Xerox Corporation
    Inventors: Kathy L. De Jong, Hany Aziz, Nan-Xing Hu
  • Publication number: 20090191476
    Abstract: The present invention relates to a thermoplastic material comprising polymer, at least one charge transfer agent, wherein the charge transfer agent is substantially colourless when neutral, but which develops colour when a charge is acquired, and at least one photo acid generating agent. The present invention further relates to a method of processing thermoplastic material to form a plastic article, wherein the method comprises the step of processing the thermoplastic material at a temperature greater than the melt temperature, Tm, of the thermoplastic, wherein the thermoplastic material comprises polymer and at least one charge transfer agent, wherein the charge transfer agent is substantially colourless when neutral, but which develops colour when a charge is acquired, and at least one photo acid generating agent, and wherein the method further comprising the step of irradiating the plastic article to colour at least a region of the plastic article.
    Type: Application
    Filed: January 22, 2009
    Publication date: July 30, 2009
    Inventors: Neil John Rogers, Christopher Lamb, Anthony Nicholas Jarvis
  • 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: 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: 20080233500
    Abstract: A photoreceptor device having at least one layer that is a self-assembled patterned binder layer, which may include at least one functional material.
    Type: Application
    Filed: March 23, 2007
    Publication date: September 25, 2008
    Applicant: XEROX CORPORATION
    Inventors: Kathy L. DE JONG, Hany AZIZ
  • Publication number: 20080107980
    Abstract: A coating composition having a polymer resin composition containing at lest an acid catalyst and a masking agent, wherein the masking agent is selected from the group consisting of compound A, compound B, and the acylated derivatives of compound A, where compound A is given by the structural formula (I): where X represents a substituent selected from the group consisting of —OR and —NR?R?, wherein R, R?, and R? each independently represent a hydrogen atom or a hydrocarbyl group; and compound B is given by the structural formula (II): where Y and Z independently represent —OH or —NH2.
    Type: Application
    Filed: November 6, 2006
    Publication date: May 8, 2008
    Applicant: Xerox Corporation
    Inventors: Kathy L. De Jong, Hany Aziz, Nan-Xing Hu
  • 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: 7364823
    Abstract: An amine compound represented by the following general formula (1) is incorporated as a charge-transporting substance into a charge-transporting layer of an electrophotographic photoreceptor.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: April 29, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akihiro Kondoh, Takatsugu Obata
  • 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: 7261988
    Abstract: An 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 X comprises a linking group; R1 and R1? comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and R2, R3, R2?, and R3? comprise, each independently, an arylamine group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and methods of forming the charge transport material are described.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: August 28, 2007
    Assignee: Samsung Electronics Co. Ltd
    Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Maryte Daskeviciene, Ingrida Paulauskaite, Robertas Maldzius, Jonas Sidaravicius
  • 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: 7202002
    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 arylamino 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: April 10, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Zbigniew Tokarski, Nusrallah Jubran, Ruta Budreckiene, Gintaras Buika, Valentas Gaidelis, Juozas V. Grazulevicius, Vygintas Jankauskas
  • 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: 7169920
    Abstract: Methods for preparing phthalocyanine co-crystals are provided. The phthalocyanine co-crystals include titanyl phthalocyanines and metal free phthalocyanines.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: January 30, 2007
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, John S. Chambers, Jin Wu, Francisco José López
  • Patent number: 7118840
    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 3 and 6; R1 and R2 are, each independently, H, an alkyl group, an alkenyl group, an aromatic group, or a heterocyclic group; R3, R4, and R5 are, each independently, H, thiol, hydroxyl, carboxyl, an amino group, a halogen, nitro, cyano, an alkyl group, an alkenyl group, an aromatic group, a heterocyclic group, or a part of a ring group; X1 and X2 are, each independently, a linking group; Y comprises 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: December 31, 2003
    Date of Patent: October 10, 2006
    Assignee: Samsung Electronics Co., LTD
    Inventors: Zbigniew Tokarsi, Nusrallah Jubran, Vytautas Getautis, Ingrida Paulauskaite, Vygintas Jankauskas, Jonas Sidaravicius
  • Patent number: 7074534
    Abstract: The present invention relates to polymeric charge transport compositions. The invention further relates to electronic devices in which there is at least one active layer comprising such charge transport compositions.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: July 11, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Norman Herron, Nora Sabina Radu, Eric Maurice Smith
  • 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: 7018755
    Abstract: An electrophotographic photoconductor having at least a photosensitive layer on a conductive support, wherein the electrophotographic photoconductor comprising, in the outermost layer thereof: a filler, an organic compound having an acid value of 10–400 mgKOH/g, and at least one of compounds represented by the following general formulas 1 and 2: where R1, R2 are substituted or unsubstituted alkyl groups or aromatic hydrocarbon rings, and may be identical or different. R1, R2 may also be bonded together to form a substituted or unsubstituted heterocycle containing a nitrogen atom. R3, R4, R5 are substituted or unsubstituted alkyl or alkoxy groups, or halogen atoms. Ar is a substituted or unsubstituted aromatic hydrocarbon ring or aromatic heterocycle. n is an integer in the range 2 to 4, and k, l, m are respectively integers in the range 0 to 3. X is an oxygen atom, or a sulfur atom.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: March 28, 2006
    Assignee: Ricoh Company, Ltd.
    Inventors: Takaaki Ikegami, Tomoyuki Shimada, Yasuo Suzuki, Nozomu Tamoto, Hidetoshi Kami
  • 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
  • Patent number: 6933091
    Abstract: A highly sensitive positively charged type electrophotographic photoconductor includes an organic compound that transports electrons efficiently, improving light emission efficiency. The photoconductor is used in an electrophotographic drum, an electrophotographic cartridge and an electrophotographic apparatus.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: August 23, 2005
    Assignee: Fuji Electric Imaging Devices Co., Ltd.
    Inventors: Nobuyuki Sekine, Masami Kuroda, Yoshihiro Ueno, Kenichi Ohkura
  • 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: 20040197685
    Abstract: A photoconductive imaging member comprised of a supporting substrate, and thereover a single layer comprised of a mixture of a photogenerator component, charge transport components, and a certain electron transport component, and a certain polymer binder.
    Type: Application
    Filed: April 4, 2003
    Publication date: October 7, 2004
    Applicant: Xerox Corporation
    Inventors: Andronique loannidis, Nancy L. Belknap, Cindy C. Chen, Lanhui Zhang, Timothy P. Bender, John F. Graham, Ah-Mee Hor, James M. Duff
  • Publication number: 20040183885
    Abstract: The invention provides an image forming apparatus comprising: an electrophotographic photoreceptor having a conductive substrate and a photosensitive layer provided on the conductive substrate; a charging unit for charging the electrophotographic photoreceptor; an exposure unit for exposing the charged electrophotographic photoreceptor to light thereby forming an electrostatic latent image; a developing unit for developing the electrostatic latent image with toner thereby forming a toner image; and a transfer unit for transferring the toner image from the electrophotographic photoreceptor to a transferred image-receiving medium, wherein said exposure unit is a multi beam exposure unit which has a surface emitting laser array and which carries out the electrostatic latent image formation by scanning the electrophotographic photoreceptor with eight or more light beams; and wherein said electrophotographic photoreceptor gives a quantum efficiency of 0.
    Type: Application
    Filed: October 14, 2003
    Publication date: September 23, 2004
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Taketoshi Hoshizaki, Hidemi Nukada, Takahiro Suzuki
  • Patent number: 6777148
    Abstract: Disclosed are a novel organic photoconductive material suitable as a charge-transporting material in a photosensitive layer of an electrophotographic photoreceptor or usable in various display devices, and an electrophotographic photoreceptor which uses the above organic photoconductive material in a photosensitive layer and which exhibits a high charge potential and high sensitivity and also exhibits little or almost no change in various properties in repeated use and can exhibit stabilized performances. The present invention provides an organic photoconductive material comprising a compound having a specific structure and an electrophotographic photoreceptor having a photosensitive layer containing the above photoconductive material.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: August 17, 2004
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Tatsuya Kodera, Koichi Torizuka
  • Publication number: 20040142261
    Abstract: A photosensitive layer contains an electron-transfer agent that makes use of a compound represented by the following general formula (1): 1
    Type: Application
    Filed: September 30, 2003
    Publication date: July 22, 2004
    Applicants: PERMACHEM ASIA, LTD., SHINDENGEN ELECTRIC MANUFACTURING CO., LTD., YAMANASHI ELECTRONICS CO., LTD.
    Inventors: Yasuyuki Kiuchi, Toyozoh Satoh, Hitoshi Takahashi, Tomoko Kitsunai, Hiroki Suzuki, Mitsuyo Momose
  • Patent number: 6749979
    Abstract: An electrophotography photosensitive body has a single layer photosensitive layer on top of a conductive substrate, directly or via an undercoat layer. The single layer photosensitive layer contains at least a resin binder, a charge generating substance, and a charge transport substance, wherein at least one of the charge generating substances is a titanyl phthalocyanine, which, in a x-ray powder diffraction spectrum having a radiation source of CuK &agr; and within a range of a Bragg angle 2&thgr;=5˜35°, a ratio, R, of a value, P, of a diffraction intensity of a highest peak and a value, B, of a diffraction intensity of the background satisfies the equation R=(P−B)/B≦7.0. The resulting electrophotographic photosensitive layer shows excellent electrical properties with positive charging as well as excellent stability when repeatedly used.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: June 15, 2004
    Inventors: Masaru Takeuchi, Kenichi Ohkura
  • 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
  • Publication number: 20040033430
    Abstract: A highly sensitive positively charged type electrophotographic photoconductor includes an organic compound that transports electrons efficiently, improving light emission efficiency. The photoconductor is used in an electrophotographic drum, an electrophotographic cartridge and an electrophotographic apparatus.
    Type: Application
    Filed: May 23, 2003
    Publication date: February 19, 2004
    Applicant: Fuji Electric Imaging Device Co., Ltd.
    Inventors: Nobuyuki Sekine, Masami Kuroda, Yoshihiro Ueno, Kenichi Ohkura
  • Publication number: 20030215728
    Abstract: Improved organophotoreceptor include:
    Type: Application
    Filed: March 6, 2003
    Publication date: November 20, 2003
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
  • Publication number: 20030198880
    Abstract: This invention relates to a novel organophotoreceptor that includes:
    Type: Application
    Filed: January 22, 2003
    Publication date: October 23, 2003
    Applicant: SAMSUNG Electronics Co. Ltd.
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski, Alan R. Katritzky, Ritu Jain, Rexiat Maimait
  • Publication number: 20030148201
    Abstract: Disclosed are a novel organic photoconductive material suitable as a charge-transporting material in a photosensitive layer of an electrophotographic photoreceptor or usable in various display devices, and an electrophotographic photoreceptor which uses the above organic photoconductive material in a photosensitive layer and which exhibits a high charge potential and high sensitivity and also exhibits little or almost no change in various properties in repeated use and can exhibit stabilized performances.
    Type: Application
    Filed: October 21, 2002
    Publication date: August 7, 2003
    Inventors: Tatsuya Kodera, Koichi Torizuka
  • Patent number: 6485658
    Abstract: Disclosed are a phthalocyanine composition having main diffraction peaks at 7.0°, 9.0°, 14.1°, 18.0°, 23.7° and 27.3° of Bragg angles (2&thgr;±0.2°) in an X-ray diffraction spectrum with Cu K&agr;, a process for producing the same and an electrophotographic photoreceptor using the same.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: November 26, 2002
    Assignee: Mitsubishi Paper Mills, Limited
    Inventors: Tamotsu Horiuchi, Hideki Nagamura, Makoto Okaji
  • Publication number: 20020102484
    Abstract: The invention relates to an electrophotosensitive material comprising an organic photosensitive layer and an inorganic surface protective layer, wherein at least an outermost part of the organic photosensitive layer contains any one of the compounds represented by formulas (1) to (4).
    Type: Application
    Filed: September 18, 2001
    Publication date: August 1, 2002
    Inventors: Eiichi Miyamoto, Yoshio Inagaki, Hideaki Fukunaga
  • Patent number: 6322941
    Abstract: A photoconductive imaging member containing a photogenerating layer comprised of a mixture of perylenes, wherein the mixture comprises, for example, (1) 1,3-bis(n-pentylimidoperyleneimido) propane (Formula A), 1,3-bis(2-methylbutylimido peryleneimido)propane (Formula B) and 1-(n-pentylimidoperyleneimido)-3-(2-methylbutyl imidoperyleneimido)-propane (Formula C), and (2) an electron acceptor component polymer
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: November 27, 2001
    Assignee: Xerox Corporation
    Inventors: Cheng-Kuo Hsiao, Ping Liu, Ah-Mee Hor, Beng S. Ong