Conductive Layer Patents (Class 430/62)
  • Patent number: 10466604
    Abstract: Provided is an electrophotographic photoconductor including: a conductive support; an undercoat layer; and a photoconductive layer, wherein the undercoat layer and the photoconductive layer are provided over the conductive support in the order of reciting, wherein the undercoat layer contains at least metal oxide particles, a binder, and a salicylic acid derivative such as 4-methylsalicylic acid, wherein the metal oxide particles have a volume resistivity of 1×105 ?·cm or higher but 1×108 ?·cm or lower, wherein the undercoat layer has a volume resistivity of 0.001×106 ?·cm or higher but 0.02×106 ?·cm or lower, and wherein the undercoat layer has a thickness of 2 micrometers or greater but 20 micrometers or less.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: November 5, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsuya Toshine, Mitsuaki Hirose, Tomoharu Asano
  • Patent number: 9278348
    Abstract: A polyether compound containing oxirane monomer units in an average number per molecule of 5 to 200, wherein the polyether compound has a cationic group and cross-linkable group in the oxirane monomer units, and a cross-linkable composition containing this polyether compound and a cross-linking agent which enables cross-linking of the cross-linkable groups of the polyether compound are provided.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: March 8, 2016
    Assignee: ZEON CORPORATION
    Inventors: Shigetaka Hayano, Hiroyuki Yonemaru, Keisuke Ohta
  • Patent number: 9280083
    Abstract: An image forming device includes at least one image forming element moving past an image forming station in which toner is deposited on a surface of the image forming element, which surface is facing the image forming station, said image forming element including a core layer forming a core of the image forming element and including a plurality of tracks comprising electrodes individually connected to corresponding drivers, and a semi-conducting top layer forming the surface of the image forming element, wherein the image forming element further includes an isolating layer in-between the core layer and the semi-conducting top layer, which isolating layer includes a plurality of pads each of which extends over at least one track in a non-overlapping manner, extends towards one underlying track as to form an interconnection with the one underlying track, and is filled with a conducting material in order to let each pad individually be activated by means of the driver of the underlying track in order to adhere t
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: March 8, 2016
    Assignee: OCE-TECHNOLOGIES B.V.
    Inventor: Norbert H. W. Lamers
  • Patent number: 9012112
    Abstract: An electrophotographic photosensitive member includes an undercoat layer having a structure represented by formula (1).
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: April 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Tomono, Kunihiko Sekido, Michiyo Sekiya, Atsushi Okuda, Yuka Ishiduka, Nobuhiro Nakamura, Yota Ito
  • Patent number: 8993205
    Abstract: An electrophotographic photosensitive member comprises a support, an undercoat layer formed on the support, and a photosensitive layer formed on the undercoat layer, wherein the undercoat layer has a structure represented by the formula (C1) or the formula (C2).
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: March 31, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuhiro Nakamura, Atsushi Okuda, Kunihiko Sekido, Michiyo Sekiya, Yota Ito, Kenichi Kaku, Hiroyuki Tomono, Yuka Ishiduka
  • Patent number: 8971764
    Abstract: The presently disclosed embodiments relate generally to image forming systems comprising imaging apparatus members and toner compositions. More specifically, the present embodiments relate to an improved BCR xerographic system comprising (1) a cleaning blade comprising a material having a certain Share A Hardness; (2) a photoreceptor having a surface with a specified Young's Modulus and; and (3) a toner lubricant additive. The combined system demonstrates a significant increase an overall service life of the system.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: March 3, 2015
    Assignee: Xerox Corporation
    Inventors: Richard A. Klenkler, Gregory McGuire, Sarah J. Vella, Guiqin Song, Yu Liu, Adrien P. Cote
  • Patent number: 8956793
    Abstract: An electrophotographic photoreceptor includes a conductive support, an undercoat layer that is provided on the conductive support and that has a thickness of from 15 ?m to 40 ?m and has light transmittance of 20% or less with respect to light having a wavelength of 450 nm when the thickness is at least 15 ?m, a charge generation layer that is provided on the undercoat layer, and a charge transport layer that is provided on the charge generation layer and that has a thickness of from 15 ?m to 40 ?m and has light transmittance of 30% or less with respect to light having a wavelength of 450 nm when the thickness is at least 15 ?m.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: February 17, 2015
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kenta Ide, Kosuke Narita, Akihiro Kawasaki, Satoya Sugiura, Akihiro Nonaka, Hirofumi Nakamura, Kazuhiro Koseki, Shigeto Hashiba
  • Patent number: 8956794
    Abstract: A negative-charge type electrophotographic photoreceptor includes a conductive substrate; an undercoat layer which includes a binder resin and metal oxide particles and in which the work function is from 4.0 eV to 4.7 eV; a charge generation layer in which a difference between the work functions of the charge generation layer and the undercoat layer is from ?4 eV to 0 eV; and a charge transport layer which is provided on the charge generation layer.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: February 17, 2015
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Shinya Yamamoto
  • Patent number: 8940465
    Abstract: An undercoat layer of an electrophotographic photosensitive member contains a polymerized product of a composition that contains an isocyanate compound having a specific structure, a resin having a specific structure, and an electron transporting substance having a specific structure.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: January 27, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kunihiko Sekido, Hiroyuki Tomono, Michiyo Sekiya, Atsushi Okuda, Yuka Ishiduka, Nobuhiro Nakamura, Yota Ito
  • Patent number: 8932787
    Abstract: An electrophotographic photoconductor including: an electroconductive substrate; an intermediate layer; and a photoconductive layer, the intermediate layer and the photoconductive layer being on the electroconductive substrate, wherein the intermediate layer includes an inorganic pigment and a binder resin, wherein a volume ratio of the inorganic pigment in the intermediate layer is 30% by volume to 50% by volume, wherein the inorganic pigment comprises titanium oxide and a content of the titanium oxide in the inorganic pigment is 70% by mass to 90% by mass, wherein the inorganic pigment has a specific surface area of 70 m2/g to 140 m2/g, and wherein the intermediate layer has a volume resistivity at an electrical field intensity of 2.5×105 V/cm of 5×1011 ?·cm to 1×1013 ?·cm.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: January 13, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Eiji Kurimoto, Tadayoshi Uchida, Hideki Nakamura
  • Patent number: 8826558
    Abstract: A media drying system removes a moistening liquid from a moistened medium having first and second surfaces. A liquid reservoir contains a heating liquid heated above a moistening-liquid boiling point. A rotatable liquid-blocking member has a liquid-blocking layer with an inner surface and an outer surface. A media-transport system transports the medium entrained around the liquid-blocking member so that the first surface of the moistened medium is brought into contact with the outer surface of the liquid-blocking layer. An entrained portion of the moistened medium passes through the liquid reservoir and is submerged in the warmed heating liquid. The heating liquid contacts the inner surface of the liquid-blocking layer so that heat is transferred through the liquid-blocking layer from the warmed heating liquid to the moistening liquid, or heat is transferred from the warmed heating liquid to the second surface of the moistened medium.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: September 9, 2014
    Assignee: Eastman Kodak Company
    Inventors: Alan Richard Priebe, Donald Saul Rimai, Christopher J. White
  • Patent number: 8778580
    Abstract: An electrophotographic photosensitive member having a specific conductive layer and promising less variation in light-area potential and residual potential in reproducing images repeatedly, and a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member are provided. Where a test in which a voltage of ?1.0 kV having only a DC voltage component is continuously applied to the conductive layer for 1 hour is conducted, the conductive layer has volume resistivity satisfying the following mathematical expressions (1) and (2), as values before and after the test: ?2.00?(log|?2|?log|?1|)?2.00??(1), and 1.0×108??1?2.0×1013??(2), where, in the expressions (1) and (2), ?1 is volume resistivity (?·cm) of the conductive layer as measured before the test and ?2 is volume resistivity (?·cm) of the conductive layer as measured after the test.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: July 15, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruyuki Tsuji, Atsushi Fujii, Hideaki Matsuoka
  • Patent number: 8741513
    Abstract: The present invention provides a novel alizarin derivative compound and a simplified and low cost method for preparing an alizarin derivative compound including: obtaining a compound represented by Formula (2) using a compound represented by Formula (3); and obtaining an alizarin derivative compound represented by Formula (1) using the compound represented by Formula (2); in Formulae (1) to (3), R1 represents a hydrogen atom or a substituent; n represents an integer of 1 to 3, L represents a specific alkyl group; Q represents an atomic group needed to form an aromatic ring or a heteroaromatic ring with adjacent carbon atoms; and P represents an atomic group which includes an atom(s) selected from a hydrogen atom, a carbon atom, an oxygen atom, a sulfur atom, a silicon atom and a boron atom, and which is needed to form a ring structure group with adjacent two oxygen atoms and two carbon atoms;
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: June 3, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Keita Takahashi, Kazumi Nii, Kazunari Yagi
  • Patent number: 8632931
    Abstract: The present invention relates to an electrophotographic photosensitive member obtained by providing an intermediate layer and a photosensitive layer on a conductive support in the stated order, the electrophotographic photosensitive member being characterized in that the intermediate layer contains a specific polyolefin resin and a specific organic electron-transporting substance, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: January 21, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kunihiko Sekido, Hideaki Nagasaka, Michiyo Sekiya, Shinji Takagi
  • Patent number: 8546051
    Abstract: A developer bearing member is provided which can charge a toner stably and uniformly during the period from the initial stage to the terminal stage of extensive operation even in various environments. The developer bearing member includes a substrate and an electrically conductive resin coating layer formed on the surface thereof. The electrically conductive resin coating layer is formed from a resin composition containing a phenolic resin having in its structure at least one of an —NH2 group, an ?NH group and an —NH— linkage, a quaternary phosphonium salt and electrically conductive fine particles and the resin composition contains 1 part by mass or more and 60 parts by mass or less of the quaternary phosphonium salt with respect to 100 parts by mass of the phenolic resin.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: October 1, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Otake, Masayoshi Shimamura, Yasutaka Akashi, Takuma Matsuda, Minoru Ito, Kazuhito Wakabayashi
  • Patent number: 8524430
    Abstract: The present invention relates to an electrophotographic photosensitive member obtained by providing, on a conductive support, a conductive layer containing conductive particles having a volume-average particle diameter of 0.1 ?m or more, an intermediate layer, and a photosensitive layer in the stated order in which the conductive layer contains a polyolefin resin containing a specific repeating structural unit at a specific ratio, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: September 3, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinji Takagi, Hideaki Nagasaka, Kunihiko Sekido, Michiyo Sekiya
  • Patent number: 8524429
    Abstract: The present invention relates to an electrophotographic photosensitive member obtained by providing an intermediate layer and a photosensitive layer on a conductive support in the stated order, the electrophotographic photosensitive member being characterized in that the intermediate layer contains a specific polyolefin resin and a specific organic electron-transporting substance, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: September 3, 2013
    Assignee: Canon Kabushiki Kaishi
    Inventors: Kunihiko Sekido, Hideaki Nagasaka, Michiyo Sekiya, Shinji Takagi
  • Patent number: 8455170
    Abstract: An electrophotographic photosensitive member is provided in which black spots on an output image are hardly caused by local charge injection from a support to a photosensitive layer. For this purpose, a conductive layer is formed using a coating liquid for a conductive layer prepared using a solvent, a binder material and a metal oxide particle that satisfies the following relation (i): 45?A×?×D?65 (i) wherein A denotes the surface area of the metal oxide particle per unit mass [m2/g], D denotes the number average particle diameter of the metal oxide particle [?m], and ? denotes the density of the metal oxide particle [g/cm3]. The metal oxide particle is a titanium oxide particle coated with tin oxide doped with phosphorus.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: June 4, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuhiro Nakamura, Hideaki Matsuoka, Atsushi Fujii, Haruyuki Tsuji, Kazuhisa Shida
  • Patent number: 8361686
    Abstract: An electrophotographic photoreceptor comprising at least a photosensitive layer on an electroconductive substrate, a surface layer of the electrophotographic photoreceptor including a fluorinated alkyl group-containing copolymer having repeating units represented by the following formulae A and B, and fluorine-based resin particles: wherein in Formulae A and B, l, m and n each independently represent a integer number of 1 or more; p, q, r and s each independently represent 0 or an integer of 1 or more; t represents an integer of from 1 to 7; R1, R2, R3, and R4 each independently represent a hydrogen atom or an alkyl group; X represents an alkylene chain, a halogen-substituted alkylene chain, —S—, —O—, —NH— or a single bond; Y represents an alkylene chain, a halogen-substituted alkylene chain, —(CzH2z-1(OH))— or a single bond; and z represents an integer of 1 or more.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: January 29, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hidemi Nukada, Shinya Yamamoto, Masaru Miura, Hitoshi Takimoto, Takahiro Suzuki, Tetsunao Koujiri
  • Patent number: 8298733
    Abstract: In an electrophotographic apparatus (e.g., a photocopier or laser printer), an electrophotographic photosensitive member (image-forming part) has a metal substrate roughened on its surface, a metal oxide-containing undercoat layer on the substrate, and an organic photosensitive layer over the undercoat. A coherent light source (e.g., laser) can cause interference fringes that degrade the printed image. Interference fringes are judged (or predicted) as follows: The surface reflectance is measured at intervals over the spectral width of the light source. The measured surface reflectance is corrected, using a mirror-surface conductive substrate as a reference, to obtain a reflectance of the photosensitive member. The reflectance is subjected to a discrete Fourier transformation, which generates a power spectrum, over the spectral width of the light source, from the reflectance as a function of the wavelength.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: October 30, 2012
    Assignee: Fuji Electric Co., Ltd.
    Inventor: Motohiro Takeshima
  • Patent number: 8287774
    Abstract: A method of manufacturing an electrochromic polyaniline thin film changeable in color in dependency upon the supply of electricity is provided. The method comprises the steps of polymerizing aniline monomer into polyaniline polymer, separating the polyaniline polymer, liquefying the separated polyaniline polymer into a dispersing solution using a mixed surfactant, and dissolving an UV curing adhesive in the dispersing solution, whereby the polyaniline thin film has the ductility and improved adhesion force for an electric substrate, so that it is applicable to development of a flexible display and as a next generation hi-tech material.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: October 16, 2012
    Assignee: Korea Institute of Industrial Technology
    Inventor: Tae-Jin Hwang
  • Patent number: 8137877
    Abstract: An electrophotographic photoreceptor including an undercoat layer and a photosensitive layer that are sequentially formed on an electrically conductive substrate, wherein the undercoat layer has a structure in which metal oxide particles and dialkylcitrate-chelated zirconate represented by Formula 1, illustrated below, are dissolved or dispersed in a binder resin, and an electrophotographic imaging apparatus including the electrophotographic photoreceptor: wherein R1 and R2 are each independently a C1-20 linear or branched alkyl group. The electrophotographic photoreceptor has excellent stability of electrical properties and interlayer adhesion strength, by including the undercoat layer.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: March 20, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-don Kim, Moto Makino
  • Publication number: 20110236810
    Abstract: The electrophotographic photoreceptor includes a substrate and a photosensitive layer disposed on the substrate, wherein a surface layer of the electrophotographic photoreceptor contains fluorine-containing polymer particles and a dispersion aid for the fluorine-containing polymer particles, and the surface layer has convex portions with diameters of from 200 ?m to 500 ?m spaced at an average interval of from 600 ?m to 950 ?m.
    Type: Application
    Filed: August 30, 2010
    Publication date: September 29, 2011
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Isamu ISHIKO, Yoshifumi Shoji
  • Publication number: 20110183245
    Abstract: A photoconductor that includes a supporting substrate, an optional ground plane layer, an optional hole blocking layer, a photogenerating layer, and at least one charge transport layer, and where the charge transport layer contains a polyamideimide.
    Type: Application
    Filed: January 28, 2010
    Publication date: July 28, 2011
    Applicant: Xerox Corporation
    Inventors: Jin Wu, Yuhua Tong, Linda L. Ferrarese, Edward C. Savage
  • Patent number: 7964328
    Abstract: The present invention relates to photoconductive elements having an electrically conductive support, an electrical barrier layer and, disposed over the conductive layer, a charge generation layer capable of generating positive charge carriers when exposed to actinic radiation. The electrical barrier layer, which restrains injection of positive charge carriers from the conductive support, comprises a crosslinkable condensation polymer having as a repeating unit a planar, electron-deficient, tetracarbonylbisimide group and optionally a crosslinker.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: June 21, 2011
    Assignee: Eastman Kodak Company
    Inventors: Wayne T. Ferrar, Xin Jin, David S. Weiss
  • Patent number: 7955527
    Abstract: The invention provides a conductivity control agent comprised of a polymeric material containing diphosphonium bis(sulfoarylcarbonyloxy) glycol salts as conductivity control agent. The conductivity control agents can be used with semi-conductive rolls, belts and other biasable members. The inclusion of the conductivity control agent in the polymeric or polyurethane elastomers extends the electrical life of the polymeric biasable member in low humidity environments. Additionally, the resistivity of the elastomeric polymer on the biasable member is controlled to a desirable value by adjusting the conductivity control agent level in the elastomers.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: June 7, 2011
    Assignee: Eastman Kodak Company
    Inventors: M. Cristina B. DeJesus, Charles E. Hewitt, John C. Wilson
  • Patent number: 7713767
    Abstract: A method of making a circuitized substrate (e.g., PCB) including at least one and possibly several internal optical pathways as part thereof such that the resulting substrate will be capable of transmitting and/or receiving both electrical and optical signals. The method involves forming at least one opening between a side of the optical core and an adjacent upstanding member such that the opening is defined by at least one angular sidewall. Light passing through the optical core material (or into the core from above) is reflected off this angular sidewall. The medium (e.g., air) within the opening thus also serves as a reflecting medium due to its own reflective index in comparison to that of the adjacent optical core material. The method utilizes many processes used in conventional PCB manufacturing, thereby keeping costs to a minimum.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: May 11, 2010
    Assignee: Endicott Interconnect Technologies, Inc.
    Inventors: Benson Chan, How T. Lin, Roy H. Magnuson, Voya R. Markovich, Mark D. Poliks
  • Patent number: 7704656
    Abstract: A photoreceptor comprising a charge transport layer doped with a polyarylate polymer is provided. A charge transport layer is doped with about 0.1 to about 10.0% by weight, solids basis, of a polyarylate polymer, such as for example Ardel. Charge transport layers doped with a polyarylate polymer exhibit improved electrical performance in terms of lower Vr and VBG values.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: April 27, 2010
    Assignee: Xerox Corporation
    Inventors: Min-Hong Fu, Kent J. Evans, David M. Skinner, Kathleen M. Carmichael, June E. Schneider, Susan M. VanDusen
  • Patent number: 7666329
    Abstract: The invention provides conductivity control agent comprised of a polymeric material containing hydroxyalkylphosphonium (2-hydoxyethoxycarbonyl) arylsulfonate salts. The conductivity control agents can be used with semi-conductive rolls, belts and other biasable members. The inclusion of the conductivity control agent in the polymeric or polyurethane elastomers extends the electrical life of the polyurethane biasable member in low humidity environments. Additionally, the resistivity of the elastomeric polyurethane or polymer on the biasable member is controlled to a desirable value by adjusting the conductivity control agent level in the polymeric or polyurethane elastomers.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: February 23, 2010
    Assignee: Eastman Kodak Company
    Inventors: M. Cristina B. Dejesus, John C. Wilson, Charles E. Hewitt
  • Patent number: 7655371
    Abstract: A photoconductive imaging member including at least a substrate, an optional thick undercoat layer, a charge generating layer comprising a high sensitivity pigment and a low sensitivity pigment, and a charge transport layer.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: February 2, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Liang-bih Lin, Geoffrey M. T. Foley
  • Patent number: 7641819
    Abstract: The present invention provides conductivity control agents derived from the trans esterification of dialkyl phosphonium 5-sulfoisophthalate salts with poly(alkylene glycols). The conductivity control agents can be used with semi-conductive rolls, belts and other biasable members. The inclusion of the conductivity control agent in the polymeric or polyurethane elastomers extends the electrical life of the polymer biasable member in low humidity environments. Additionally, the resistivity of the elastomeric polymers or polyurethane on the biasable member is controlled to a desirable value by adjusting the conductivity control agent level in the polymer elastomers.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: January 5, 2010
    Assignee: Eastman Kodak Company
    Inventors: M. Cristina B. Dejesus, John C. Wilson, George R. Walgrove, III, Charles E. Hewitt
  • Patent number: 7540981
    Abstract: The present invention provides a polymeric material containing conductivity control agents derived from a hydroxyalkylphosphonium sulfonate salt. The conductivity control agents can be used with semi-conductive rolls, belts and other biasable members. The inclusion of the conductivity control agent in polymeric or polyurethane elastomers extends the electrical life of the polymer biasable member in low humidity environments. Additionally, the resistivity of the elastomeric polyurethane or polymer on the biasable member is controlled to a desirable value by adjusting the conductivity control agent level in the elastomers.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: June 2, 2009
    Assignee: Eastman Kodak Company
    Inventors: M. Cristina B. Dejesus, John C. Wilson, Charles E. Hewitt
  • Patent number: 7541123
    Abstract: An imaging member includes an electrically conductive layer; a positive charge blocking layer, an imaging layer, and an undercoat layer. The undercoat layer is intermediate the imaging layer and the electrically conductive layer. The undercoat layer includes a film forming polymer and a particulate material dispersed therein. The particulate material supports a charge blocking material thereon.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: June 2, 2009
    Assignee: Xerox Corporation
    Inventors: Satchidanand Mishra, Robert C. U. Yu, Kathleen M. Carmichael
  • Patent number: 7541058
    Abstract: A circuitized substrate (e.g., PCB) including an internal optical pathway as part thereof such that the substrate is capable of transmitting and/or receiving both electrical and optical signals. The substrate includes an angular reflector on one of the cladding layers such that optical signals passing through the optical core will impinge on the angled reflecting surfaces of the angular reflector and be reflected up through an opening (including one with optically transparent material therein), e.g., to a second circuitized substrate also having at least one internal optical pathway as part thereof, to thus interconnect the two substrates optically. A method of making the substrate is also provided.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: June 2, 2009
    Assignee: Endicott Interconnect Technologies, Inc.
    Inventors: Benson Chan, How T. Lin, Roy H. Magnuson, Voya R. Markovich, Mark D. Poliks
  • Patent number: 7534376
    Abstract: The invention provides a conductivity control agent comprised of a polymeric material containing diphosphonium bis(sulfoarylcarbonyloxy) glycol salts as conductivity control agent. The conductivity control agents can be used with semi-conductive rolls, belts and other biasable members. The inclusion of the conductivity control agent in the polymeric or polyurethane elastomers extends the electrical life of the polymeric biasable member in low humidity environments. Additionally, the resistivity of the elastomeric polymer on the biasable member is controlled to a desirable value by adjusting the conductivity control agent level in the elastomers.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: May 19, 2009
    Assignee: Eastman Kodak Company
    Inventors: M. Cristina B. DeJesus, Charles E. Hewitt, John C. Wilson
  • Patent number: 7531277
    Abstract: In accordance with the invention, there are electrophotographic photoreceptors, image forming apparatus and methods of forming an image. The electrophotographic photoreceptor can comprise a conductive layer comprising a plurality of electroluminescent nanomaterials, a first contact electrically connected to a first edge of the conductive layer and an electrical ground, a second contact electrically connected to a second edge of the conductive layer and a D.C. power supply, and a photosensitive layer disposed over the conductive layer, wherein the photosensitive layer comprises a charge generation material and a charge transport material. The D.C. power supply can be configured to supply a lateral voltage bias at the second contact to generate a localized electroluminescence across the conductive layer and deliver an erase illumination from within the electrophotographic photoreceptor.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: May 12, 2009
    Assignee: Xerox Corporation
    Inventor: John S. Facci
  • Publication number: 20090104553
    Abstract: A method of cleaning and coating a used organic photoconductive drum is disclosed. Using this method remanufacturers can reliably reuse certain used organic photoconductive drums which could not be reused without this method. The method comprises providing a used organic photoconductive drum, cleaning the surface of the used organic photoconductive drum, applying a new surface layer comprising a non-volatile non-polar dielectric fluid such as a silicone oil with a viscosity of less than 200 cSt at 40 degrees Celsius. The resulting liquid surface on the used organic photoconductive drum provides wear resistance, and improved electrical characteristics allowing the used organic photoconductive drum to be used at least a second time.
    Type: Application
    Filed: October 23, 2007
    Publication date: April 23, 2009
    Applicant: Static Control Components, Inc.
    Inventors: Edwin H. Swartz, Roderick Craig Boone, John Edward Pickett, Lawrence Dale Lewis
  • Patent number: 7521173
    Abstract: The present invention relates to an extruded imaging element comprising an extruded support bearing an extruded image receiving layer and an extruded antistatic tie layer between the extruded support and the extruded image receiving layer, wherein the extruded tie layer absorbs less than 3 weight % of moisture at 80% RH and 70 F (22.78° C.) comprises 5-30% polyether-containing antistatic material in a matrix polymer, and a method for making the same.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: April 21, 2009
    Assignee: Eastman Kodak Company
    Inventors: Narasimharao Dontula, Terry A. Heath, Somsack Chang
  • Patent number: 7510810
    Abstract: Cyanoresin polymer reaction products of a hydroxyl-containing polymers and acrylonitrile, where at least one side chain group of the cyanoresin polymer is a cyano group, and electropotographic imaging members containing cyanoresin polymers.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: March 31, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Justin J. Galloway, Liang-bih Lin, Edward C. Savage, John J. Wilbert
  • Patent number: 7341811
    Abstract: New compounds having an electron transferring capability, and an electrophotographic photoreceptor including the new compounds are disclosed. The compound according to the present invention is represented by the following Formula 2: where R1, R2 and R3 are independently selected from the group consisting of a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C7 to C30 aralkyl group, and a halogen; m is 0 or an integer of 1 to 4; and n is 0 or an integer of 1 to 5. These compounds can be used an electron transferring material of an undercoating layer or a photoconductive layer of an electrophotographic photoreceptor. The electron transferring material of the invention produces an electrophotographic photoreceptor having improved electrical characteristics.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: March 11, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Beom-jun Kim, Saburo Yokota, Seung-ju Kim, Hwan-koo Lee
  • Patent number: 7341812
    Abstract: An imaging member having a substrate, an electroconducting layer having an electroconducting particle of a core and outer shell, an interfacial layer, and a charge transport layer with charge transport materials dispersed therein.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: March 11, 2008
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Yuhua Tong, Geoffrey M T. Foley, Liang-Bih Lin, Jennifer Y. Hwang
  • Patent number: 7333752
    Abstract: An electrophotographic apparatus is disclosed using an electrophotographic photosensitive member which employs light with a short wavelength (380 nm to 500 nm) as image exposure light and is good in photoelectric conversion efficiency on the whole at that wavelength. The electrophotographic photosensitive member is composed of a reflecting layer, a charge generation layer and a charge transport layer formed on a support. The total reflectance and specular reflectance of the reflecting layer are 30% or more (with respect to a standard white board) and less than 15%, respectively, at that short-wavelength light. The absorbance of the charge generation layer is 1.0 or less at that short-wavelength light.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: February 19, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Kawahara, Masato Tanaka, Atsushi Fujii, Yuka Ishizuka, Masaki Nonaka
  • Patent number: 7320822
    Abstract: In an electrophotographic conductive member composed of at least a thermoplastic resin composition, the thermoplastic resin composition contains a thermoplastic resin, a conductive filler and a conductive-filler dispersing agent, and the conductive-filler dispersing agent is a polyhydric alcohol type nonionic surface-active agent.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: January 22, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsunenori Ashibe, Ryota Kashiwabara
  • Patent number: 7314694
    Abstract: An imaging member comprised of a hole blocking layer, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer is comprised of a metal alkyoxide, an amino siloxane, and at least one polymer binder containing epoxy groups.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: January 1, 2008
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Nancy L. Belknap, John F. Yanus, Jin Wu
  • Patent number: 7153620
    Abstract: The present invention relates to an antistatic article comprising a substrate or support having thereon at least one antistatic layer, wherein the antistatic layer comprises a conductive material having areas of patterned coverage. The present invention also relates to a display comprising a substrate having an electrically modulated imaging layer thereon, at least one electrically conductive layer, and at least one transparent antistatic layer, wherein said antistatic layer comprises a conductive material having areas of patterned coverage.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: December 26, 2006
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Debasis Majumdar
  • Patent number: 7144525
    Abstract: An elastic member of a semiconductive polymer comprising a conductive composition containing a conductive polymer and binder polymer, wherein the elastic member satisfies both characteristics of (A) a variation of 1.5 digit or less between the electrical resistance at an applied voltage of 1V and the electrical resistance at an applied voltage of 133V under an environment of 25° C. and 50% RH, and (B) a variation of one digit or less between the electrical resistance at an applied voltage of 10V under an environment of 15° C. and 10% RH and the electrical resistance at an applied voltage of 10V under an environment of 35° C. and 85% RH.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: December 5, 2006
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Hitoshi Yoshikawa, Akitoshi Nozawa, Satoshi Suzuki, Kunio Ito
  • Patent number: 7083885
    Abstract: The present invention relates to an antistatic article comprising a substrate or support having thereon at least one antistatic layer, wherein the antistatic layer comprises a conductive material having areas of patterned coverage.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: August 1, 2006
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Debasis Majumdar, Robert C. Daly, Kelly S. Robinson, Barry A. Fitzgerald, Paul A. Christian
  • Patent number: 6815134
    Abstract: A photoconductive drum forming an image by using an electric potential characteristic of a surface thereof includes a cylindrical base body, a photosensitive layer formed on the cylindrical base body to be chargeable with electricity, and an elastic layer having a hardness of below 70 degrees by the Asker “C” scale and formed in a thickness greater than 10 &mgr;m between the cylindrical base body and the photosensitive layer. The photoconductive drum is implemented in an image forming apparatus and absorbs shocks generated when the photoconductive drum contacts a development roller, a charging roller, and a transfer roller and impacts caused by the development roller when developing devices are exchanged or replaced, to protect the cylindrical base body and the photosensitive layer thereon, thereby.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: November 9, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Myung-ho Kyung
  • Patent number: 6800429
    Abstract: An imaging material comprising a support having disposed thereon: a) at least one image-formning layer, and b) at least one transparent electrically conductive antistatic layer that comprises electronically conductive polymer particles, a neutral-charge conductivity enhancer, and a polymeric binder comprising gelatin or gelatin derivatives.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: October 5, 2004
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Charles C. Anderson, John M. Pochan, James L. Wakley, James F. Elman
  • Patent number: 6699550
    Abstract: The invention relates to a cylindrical resinous base-body for a photosensitive drum, and a photosensitive drum that includes the resinous base-body.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: March 2, 2004
    Assignee: Bridgestone Corporation
    Inventors: Takahiro Suzuki, Munenori Iizuka, Kunio Machida