Process Of Making Radiation-sensitive Composition Patents (Class 430/135)
  • Publication number: 20150099225
    Abstract: A method of preparing a photoconductor drum having an overcoat layer is provided. The photoconductor drum is used in an electrophotographic image forming device. The photoconductor drum is prepared from a curable composition including a urethane resin having at least six radical polymerizable functional groups and a charge transport molecule having at least one radical polymerizable functional group. The amount of the urethane resin having at least six radical polymerizable functional groups in the curable composition is about 35 percent to about 65 percent by weight. The amount of the charge transport molecules having at least one radical polymerizable functional group in the curable composition is about 35 percent to about 65 percent by weight. This overcoat layer improves wear resistance of the photoconductor drum without negatively altering the electrophotographic properties, thus protecting the photoconductor drum from damage and extending its useful life.
    Type: Application
    Filed: December 15, 2014
    Publication date: April 9, 2015
    Inventors: Mark Thomas Bellino, David Glen Black, Weimei Luo, Scott Daniel Reeves
  • Patent number: 9000101
    Abstract: The disclosure describes a neat, one-pot scheme for reacting a hydroxyl propagating end of a polymer with a cyclic acid anhydride to form a free acid terminus.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: April 7, 2015
    Assignee: Xerox Corporation
    Inventors: Andrew J. Myles, Jordan H. Wosnick, Karen A. Moffat, Valerie M. Farrugia
  • Publication number: 20150037732
    Abstract: The present teachings describe a process of forming a charge transport layer (CTL) coating dispersion. The process includes mixing a surfactant and a first organic solvent until the surfactant is completely solubilized. Fluoroplastic particles are added to the solubilized surfactant and first organic solvent while mixing to form a slurry. The slurry includes a particulate solid content of from about 5 weight percent to about 60 weight percent. The process includes mixing a base solution that includes a charge transport material, a binder, an antioxidant and a second organic solvent. The base solution is added to the slurry while mixing to form a CTL pre-mix dispersion.
    Type: Application
    Filed: August 1, 2013
    Publication date: February 5, 2015
    Applicant: Xerox Corporation
    Inventors: Lanhui Zhang, Lin Ma
  • Patent number: 8790853
    Abstract: The present disclosure is directed to charge generating compositions and methods of making the charge generating compositions. The composition may comprise one or more polymers comprising styrene units and allyl alcohol units, and one or more photoconductive particles. Electrophotographic devices employing the compositions, including methods of making the devices, are also disclosed.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: July 29, 2014
    Assignee: Xerox Corporation
    Inventors: Jin Wu, John J. Wilbert, Marc J. Livecchi, Liang-bih Lin
  • Patent number: 8568952
    Abstract: The present teachings describe a process for mixing comprising obtaining a dispersion of solid particles and an organic solvent wherein the dispersion comprises a particulate solid content of from about 0.5 weight percent to about 10 weight percent. The dispersion is mixed at a resonant frequency of the mixing system.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: October 29, 2013
    Assignee: Xerox Corporation
    Inventors: Cuong Vong, Marko Saban, Vladislav Skorokhod, Lanhui Zhang, Lin Ma, Norman Chi Su, Zhen Lai
  • Publication number: 20130280652
    Abstract: An object of the invention is to provide a method of making a p-terphenyl compound mixture which includes two symmetric p-terphenyl compounds respectively represented by formula (1) and formula (2) and an asymmetric p-terphenyl compound represented by formula (3)
    Type: Application
    Filed: June 12, 2013
    Publication date: October 24, 2013
    Inventors: Shinya NAGAI, Atsushi Takesue, Makoto Koike, Katsumi Abe, Takehiro Nakajima
  • Patent number: 8535860
    Abstract: A coating liquid for an undercoat layer of an electrophotographic photoreceptor which is formed by sequentially stacking the undercoat layer and a photosensitive layer on an electrically conductive support, wherein the coating liquid comprises titanium oxide microparticles and silicon nitride microparticles as an inorganic compound, a binder resin and an organic solvent.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: September 17, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Satoshi Katayama, Kohichi Toriyama, Mami Adachi, Kotaro Fukushima, Junichi Washo
  • Publication number: 20130189616
    Abstract: The present teachings describe a process for mixing comprising obtaining a dispersion of solid particles and an organic solvent wherein the dispersion comprises a particulate solid content of from about 0.5 weight percent to about 10 weight percent. The dispersion is mixed at a resonant frequency of the mixing system.
    Type: Application
    Filed: January 25, 2012
    Publication date: July 25, 2013
    Applicant: XEROX CORPORATION
    Inventors: Cuong Vong, Marko Saban, Vladislav Skorokhod, Lanhui Zhang, Lin Ma, Norman C. Su, Zhen Lai
  • Patent number: 8349457
    Abstract: Perfluoroisopropyl-substituted perfluorophtalocyanines, including zinc (II), copper (II) and oxo-vanadium (IV) complexes of 29H,31H,1,4,8,11,15,18,22,25-octakis-fluoro-2,3,9,10,16,17,23,24-octakis-perfluoro(isopropyl)phthalocyanine (F64Pc), may be sublimed under high vacuum conditions. The compounds/molecules produce advantageous thin films (20-100 nm) on glass substrates by physical vapor deposition. Many potential applications of the disclosed compounds/molecules are disclosed, e.g., as semiconductor materials. In situ electrical conduction and optical transmission measurements during the deposition process reveal the formation of conducting pathways and potential microscopic intermolecular electronic couplings.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: January 8, 2013
    Assignee: New Jersey Institute of Technology
    Inventors: Sergiu M. Gorun, Olga Tsaryova, Lukasz Lapok
  • Publication number: 20120231379
    Abstract: Provided is a fluorine-containing resin particle dispersion including: fluorine-containing resin particles, a resin which is not dissolved in at least one solvent in a group of hydroxyl group-containing solvents including an alcohol-based solvent having 1 to 10 carbon atoms, containing no aromatic ring in the molecule structure, and a water-based medium, and which is adhered on the surface of the fluorine-containing resin particles, and at least one solvent, in which the resin is not dissolved, in the group of hydroxyl group-containing solvents, in which the fluorine-containing resin particles having the resin adhered on the surface thereof are dispersed.
    Type: Application
    Filed: August 12, 2011
    Publication date: September 13, 2012
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Katsumi NUKADA, Wataru YAMADA, Takatsugu DOI, Yuko IWADATE
  • Patent number: 8124193
    Abstract: Methods of controlling gloss of an image are disclosed. The methods may include forming an image over a substrate by applying an ink composition and optionally an overcoat composition at least partially over the substrate. The ink composition or overcoat composition may include at least one gellant, at least one curable monomer, optionally at least one curable wax and optionally at least one photoinitiator. The ink composition or overcoat composition may be curable upon exposure to radiation. The methods may further include providing a micro-roughness to one or more portions of the ink composition or overcoat composition by non-uniformly curing the ink composition or overcoat composition, and flood curing the ink composition or overcoat composition to complete a cure. The methods may thereby provide a controlled gloss level to the image.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: February 28, 2012
    Assignee: Xerox Corporation
    Inventors: Jennifer L. Belelie, Michelle N. Chretien, Barkev Keoshkerian, Naveen Chopra, Peter G. Odell, Christopher A. Wagner
  • Patent number: 8101327
    Abstract: Disclosed herein is an electrophotographic imaging member comprising a substrate, a charge transport layer and an overcoat layer formed by combining a film forming binder and a hole transporting hydroxy triarylamine compound having at least one hydroxyl functional group that is linked to a ring carbon of an aryl group by an alkyl group having 1 to 12 carbon atoms and is capable of forming at least one of a chemical bond and a physical bond with the film forming binder. Also disclosed is an electrophotographic imaging member with an overcoat layer formed by combining a film forming polycarbonate binder, a hole transport material, a surface energy reducing silicone material comprising a crosslinkable acrylate monomer, and a solvent. Coatings and methods of forming imaging members also are disclosed.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: January 24, 2012
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Cindy C. Chen, Susan M. VanDusen
  • Publication number: 20120008984
    Abstract: An electrophotographic photoconductor having a photosensitive layer and a crosslinked resin surface layer over a support, wherein shapes of concaves and convexes in a surface of the electrophotographic photoconductor are measured by a surface roughness/profile measuring device to obtain one-dimensional data arrays, the arrays are subjected to multiresolution analysis (MRA-1) through wavelet transformation to be separated into six frequency components including HHH, HHL, HMH, HML, HLH and HLL to obtain one-dimensional data arrays, the arrays of the HHL are thinned out to be reduced 1/10 to 1/100, thereby producing one-dimensional data arrays, which are then subjected to multiresolution analysis (MRA-2) through wavelet transformation to be separated into six frequency components including LHH, LHL, LMH, LML, LLH and LLL to thereby obtain 12 frequency components in total; and a center-line average roughness (WRa) of the 12 frequency components satisfies relationship (i) below.
    Type: Application
    Filed: March 17, 2010
    Publication date: January 12, 2012
    Applicant: RICOH COMPANY. LTD.
    Inventors: Hidetoshi Kami, Junichi Yamazaki, Yukio Fujiwara, Kazuhiro Egawa
  • Patent number: 7998650
    Abstract: Disclosed herein is a method for preparing oxytitanium phthalocyanine as a charge generating material. The method comprises the steps of mixing 30˜100 wt % sulfuric acid and an oxytitanium phthalocyanine crude in a mixing ratio between 100:1 and 1:1, homogeneously grinding the mixture in a wet grinder filled with zirconia or glass beads as grinding media at ?20° C.˜60° C. for 0.1˜24 hours, and removing the grinding media from the ground mixture using a solvent. According to the method, oxytitanium phthalocyanine usable as a high-quality charge generating material can be prepared without the use of expensive and difficult-to-handle reactants, such as trifluoroacetic acid and pentafluoropropionic acid. Further disclosed is an oxytitanium phthalocyanine charge generating material prepared by the method.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: August 16, 2011
    Assignee: PHTALOS Co., Ltd.
    Inventors: Ki Suck Jung, Jong Ho Kwon, Seong Soo Park, Jun Sik Shin, Woo Ho Son, Seung Wook Song
  • Patent number: 7951515
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer, and where the photogenerating layer contains at least one photogenerating component, and a mixture of an ester thiol and a poly(vinyl halide) copolymer.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: May 31, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Marc J Livecchi, Linda L Ferrarese, John J Wilbert
  • Patent number: 7740774
    Abstract: A resonant enhanced photosensitive material includes a trap center that is adapted to interact with light and enhances the photosensitivity of the material based on a resonant interaction process with photons. The invention provides enhanced photosensitivity materials and, especially a method for enhancing photosensitivity in glasses, glass ceramics and ceramics.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: June 22, 2010
    Assignee: Schott AG
    Inventors: Joseph S. Hayden, Bianca Schreder, Jose Zimmer
  • Patent number: 7713499
    Abstract: Apparatuses and methods for preparing sol-gel solutions are provided. Specifically, apparatuses include a vessel optionally containing a stirrer; a pump; a fluidized bed reaction column; and multiple fluid lines. The multiple fluid lines connect the vessel and the pump in a first circulation loop and connect the vessel, the pump and the fluidized bed reaction column in a second circulation loop. Processes for preparing sol-gel solutions using such apparatuses are also disclosed.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: May 11, 2010
    Assignee: Xerox Corporation
    Inventors: Timothy P. Bender, David T. Borbely, Frank Ping-Hay Lee, Nan-Xing Hu
  • Patent number: 7670684
    Abstract: Coating compositions comprising perfluoroalkyl metallo and non-metallo perfluoro-phthalocyanine compounds and associated coating methods are provided by the present invention. Perfluoroalkyl metallo and non-metallo perfluoro-phthalocyanine compounds are suitable for use as functional coatings and may be optionally combined with conductive polymers. The functional properties imparted generally include one or more of chemical resistance, thermal resistance, biological and chemical non-stick surface behavior, electrochromism, variable electromagnetic field signatures, and/or non-linear optical properties.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: March 2, 2010
    Assignee: New Jersey Institute of Technology
    Inventor: Sergiu M. Gorun
  • Publication number: 20100035169
    Abstract: An aromatic silicon-containing compound has the formula: Ar—[X-L-SiRn(OR?)3-n]m where Ar represents an aromatic group, X represents a divalent or trivalent group; L represents a divalent linking group; R represents a hydrogen atom, an alkyl group or an aryl group; R? represents an alkyl group having 1 to 5 carbon atoms; n is an integer of from 0 to 2; and m is an integer of from 1 to 5. The aromatic silicon-containing compound can be used in electrophotographic photoreceptors, particularly in outmost protective layers of such electrophotographic photoreceptors.
    Type: Application
    Filed: September 14, 2009
    Publication date: February 11, 2010
    Applicant: XEROX CORPORATION
    Inventors: Yu QI, Nan-Xing HU, John F. GRAHAM, Timothy P. BENDER, Ah-Mee HOR, Yvan GAGNON, Cheng-Kuo HSIAO
  • Patent number: 7629103
    Abstract: A photoconductor comprising a photosensitive layer disposed on an support, wherein the photosensitive layer has at least a crosslinked layer and the crosslinked layer is produced by curing at least a radical polymerizable monomer having three or more functionalities and no charge transport structure and a radical polymerizable compound having a charge transport structure through irradiating a light energy in an atmosphere having a low oxygen concentration of 0.001 vol % to 2.0 vol %.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: December 8, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Ikuno, Hiroshi Tamura, Tetsuro Suzuki, Yoshiki Yanagawa
  • Publication number: 20090214260
    Abstract: An objective is to provide an organic photoreceptor exhibiting high sensitivity, suitable for exposure to a semiconductor laser having an emission wavelength of 350-500 nm or a light emitting diode, with which generation of memory images as well as image defects caused by very small charge leakage is inhibited, and also to provide an image forming apparatus fitted with the organic photoreceptor. Also disclosed is an organic photoreceptor possessing a charge generation layer and a charge transport layer provided on a conductive substrate, wherein the charge generation layer contains particles made of a condensed polycyclic pigment, having an average major axis length of 500 nm or less, an average aspect ratio of 2.5-5.0, and an aspect ratio variation coefficient of 16% or less.
    Type: Application
    Filed: February 23, 2009
    Publication date: August 27, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Tomoo SAKIMURA, Takeshi ISHIDA
  • Patent number: 7575838
    Abstract: An imaging member including a substrate; thereover a charge generation layer comprising a thiophosphate; and at least one charge transport layer positioned on the charge generation layer.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: August 18, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Geoffrey M. T. Foley, Satchidanand Mishra, Liang-bih Lin, Anthony M. Horgan, Yonn K. Rasmussen, Kathleen M. Carmichael, Edward F. Grabowski, Markus Rudolf Silvestri
  • Publication number: 20090202274
    Abstract: A coating fluid for photosensitive-layer formation having high productivity and stability and a process thereof are provided. Also provided are a high-performance electrophotographic photoreceptor and an image-forming apparatus which are capable of forming high-quality images even in various use environments and are less apt to cause image defects such as black spots or color spots. The objects are accomplished with a process for producing a coating fluid which is for forming a photosensitive layer of an electrophotographic photoreceptor and comprises a charge-generating material and a binder resin, wherein a dispersing medium having an average particle diameter in the range of from 1.0 ?m to 350 ?m is used as a dispersing medium for dispersing the charge-generating material in the coating fluid for photosensitive-layer formation. The coating fluid for photosensitive-layer formation produced by this process is preferable as a photosensitive layer of an electrophotographic photoreceptor.
    Type: Application
    Filed: May 18, 2007
    Publication date: August 13, 2009
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Teruyuki Mitsumori, Kozo Ishio, Hiroe Fuchigami
  • Publication number: 20090053633
    Abstract: An object of the invention is to provide: a p-terphenyl compound mixture useful as a charge-transporting agent which has improved solubility in organic solvents to thereby diminish a cracking phenomenon, which poses problems concerning photoreceptor characteristics, and can realize an electrophotographic photoreceptor having high sensitivity and high durability; and an electrophotographic photoreceptor employing the compound mixture. The invention relates to: a p-terphenyl compound mixture which includes two symmetric p-terphenyl compounds respectively represented by the following general formula (1) and general formula (2) and an asymmetric p-terphenyl compound represented by the following general formula (3) which has both a group of substituents of the compound represented by general formula (1) and a group of substituents of the compound represented by general formula (2); and an electrophotographic photoreceptor containing the compound mixture.
    Type: Application
    Filed: January 24, 2007
    Publication date: February 26, 2009
    Applicant: HODOGAYA CHEMICAL CO., LTD.
    Inventors: Shinya Nagai, Atsushi Takesue, Makoto Koike, Katsumi Abe, Takehiro Nakajima
  • Publication number: 20080254381
    Abstract: A chemical toner composition including a polymer polymerized from starting ingredients comprising a resin monomer and a release agent monomer.
    Type: Application
    Filed: April 10, 2007
    Publication date: October 16, 2008
    Applicant: XEROX CORPORATION
    Inventors: Daryl W. Vanbesien, Edward G. Zwartz, Cuong Vong, Maria N V. McDougall, Timothy P. Bender, Jennifer L. Belelie, Tyler Norsten
  • Publication number: 20080199795
    Abstract: An electrophotographic photosensitive member having excellent electrophotographic properties, a method of manufacturing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member are provided. The surface layer of the electrophotographic photosensitive member includes a polymer having a specific repeating structural unit and fluorine-atom-containing resin particles. The fluorine-atom-containing particles in the surface layer are dispersed so as to be provided with particle sizes almost up to those of primary particles.
    Type: Application
    Filed: April 15, 2008
    Publication date: August 21, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Harunobu Ogaki, Nobumichi Miki, Kazunori Noguchi, Nobuo Kosaka
  • Patent number: 7410743
    Abstract: A method includes pre-milling a pigment by dry ball milling the pigment with crushed CO2 (s), reducing the size of particles of the pigment by milling the pigment with glass beads, measuring a size of the particles of the pigment, determining whether that size of the particles is acceptable and coating the imaging member with the pigment if it is determined that the size of the particles is acceptable. A system includes a mill, a measuring device, a coating device and a controller that controls the mill to dry ball mill a pigment with crushed CO2, and then controls the mill to reduce the size of the pigment by milling the pigment with glass beads. The controller controls the measuring device to measure a size of the particles of the pigment to determine whether the size of the particles is acceptable. The imaging member is then coated with the solution.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: August 12, 2008
    Assignee: Xerox Corporation
    Inventors: John Chambers, Francisco Lopez, Liang-Bih Lin
  • Publication number: 20080107986
    Abstract: A salt-like hydrophobic structured silicate, wherein the cation of the salt-like structured silicate is a low molecular weight organic cation or a combination thereof with NH4+, H3O+, alkali metal, alkaline earth metal, earth metal and/or a transition metal ion. The anion of the salt-like structured silicate is an island, ring, group, chain, band, layer or tectosilicate or a combination thereof. The structured silicate is produced by (a) reacting a structured silicate, whose cation is NH4+, H3O+, an alkali metal, alkaline earth metal, earth metal, and/or transition metal ion or a combination thereof, and whose anion of which is an island, ring, group, chain, band, layer or tectosilicate, or a combination thereof, in an aqueous dispersion with a low molecular weight organic cation; (b) adding to and intensively blending with the aqueous structured silicate dispersion a hydrophobic compound from the group of waxes and metal soaps in a quantity ranging from 0.
    Type: Application
    Filed: April 28, 2005
    Publication date: May 8, 2008
    Inventors: Eduard Michel, Ruediger Baur
  • Publication number: 20080096118
    Abstract: A polyester resin has a molecular weight distribution (MWD) of approximately from 1.0 to 2.2, wherein molecular weight distribution (MWD) is a weight-averaged molecular weight (Mw)/a number-averaged molecular weight (Mn); and a luminosity (L*) of from approximately 97.0 to 100 when the polyester resin is molded in a diameter of 5 cm and a thickness of 2 mm.
    Type: Application
    Filed: May 9, 2007
    Publication date: April 24, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Fumiaki Mera, Tetsuo Ohta
  • Publication number: 20080026311
    Abstract: The present invention relates to a resin emulsion being produced by neutralizing a resin binder containing acid group with a basic compound in an aqueous medium wherein the resin binder containing acid group contains a polyester produced from a raw monomer composition containing a trivalent or higher-valent polyhydric alcohol in an amount of 1 to 15 mol %; a process for producing the resin emulsion; and a toner for electrophotography using the resin emulsion. In the resin emulsion of the present invention, a resin is readily emulsified therein even when using a crosslinked polyester as the resin, and the resin emulsion is substantially free from hydrolysis of the resin and can produce a toner having an excellent heat-resistant storage property.
    Type: Application
    Filed: July 6, 2007
    Publication date: January 31, 2008
    Applicant: KAO CORPORATION
    Inventors: Hiroshi MIZUHATA, Takashi Kubo, Takashi Mukai
  • Publication number: 20080013987
    Abstract: A toner for electrostatic image development comprising a binder resin and a colorant, the toner having a content of an aluminum element with respect to carbon of approximately 0.005 atm % to approximately 0.02 atm % as measured by X-ray photo-electron spectroscopy.
    Type: Application
    Filed: February 8, 2007
    Publication date: January 17, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takeshi Shoji, Hiroshi Nakazawa, Masanobu Ninomiya, Shuji Sato, Eisuke Iwazaki
  • Patent number: 7270926
    Abstract: A process for preparing a charge generating layer comprising dispersing photoconductive phthalocyanine particles in a polymer matrix, the matrix comprising a polymeric film-forming reaction product of vinyl chloride, vinyl acetate, maleic acid, and hydroxyalkyl acrylate, in a solution of n-butyl acetate and methyl isobutyl ketone. An electrophotographic imaging member is also prepared comprising a charge generating layer prepared according to this process.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: September 18, 2007
    Assignee: Xerox Corporation
    Inventors: Lanhui Zhang, Cindy C. Chen, Nancy Lynn Belknap, Francisco J. Lopez, Liang-Bih Lin, Andronique Ioannidis, Ed J. Radigan, John S. Chambers
  • Patent number: 7211359
    Abstract: A method for preparing a coating solution containing a cocrystallized titanyl phthalocyanine-titanyl fluorophthalocyanine, the method comprising: dry milling a charge-generation pigment or mixtures of charge-generation pigments; increasing the amorphousness of the pigment mixture as determined by X-ray crystallography using X-radiation characteristic of Cu K? at a wavelength of 1.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: May 1, 2007
    Assignee: Eastman Kodak Company
    Inventors: Michel Frantz Molaire, Lloyd Anthony Lobo
  • Patent number: 7056632
    Abstract: An organic optoelectronic device includes a solution coatable thin film having a hole transporting material, an electron transporting material, and a photogenerating component uniformly dispersed therein. The thin film is about 0.2 microns or less, and can be spin-coated onto a substrate and further coated with electrodes.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: June 6, 2006
    Assignee: Xerox Corporatioin
    Inventor: Andronique Ioannidis
  • Patent number: 7026084
    Abstract: In a process for forming an amorphous TiOPc/TiOFPc pigment mixture containing a low concentration of TiOFPc, a mixture containing phthalonitrile and titanium tetrachloride is subjected to reaction conditions effective to form lightly chlorine-substituted crude crystalline Cl—TiOPc. The lightly chlorine-substituted crude crystalline Cl—TiOPc is combined with crude crystalline TiOFPc in a weight ratio from about 75:25 Cl—TiOPc:TiOFPc to about 99.5:0.5 Cl—TiOPc:TiOFPC to form a crude crystalline pigment mixture, which is treated under conditions effective to form a substantially amorphous pigment mixture of Cl—TiOPc and TiOFPc. The substantially amorphous mixture can subsequently be converted to a nanocrystalline Cl—TiOPc/TiOFPc pigment composition containing a low concentration of TiOFPc.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: April 11, 2006
    Assignee: Eastman Kodak Company
    Inventors: Michel F. Molaire, Jeanne E. Kaeding, Theodore Zubil, Jeffrey R. Murray
  • Patent number: 7011919
    Abstract: In a process for forming a self-dispersing crystalline phthalocyanine pigment composition of monodisperse nanoparticles, a mixture containing titanyl fluorophthalocyanines, unsubstituted titanyl phthalocyanine, and an organic monomeric dispersant but substantially free of organic solvents or inorganic salts is dry milled, thereby forming a substantially amorphous phthalocyanine pigment composition. The substantially amorphous composition is contacted with an organic solvent having a hydrogen bonding parameter gammac lower than about 8, thereby forming a self-dispersing cocrystalline phthalocyanine pigment composition of monodisperse nanoparticles containing titanyl fluorophthalocyanines and titanyl phthalocyanine, which can be used to form the charge generation layer of an electrophotographic element.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: March 14, 2006
    Assignee: Eastman Kodak Company
    Inventors: Michel F. Molaire, Louis J. Sorriero
  • Patent number: 6958204
    Abstract: An electrophotographic photosensitive member includes a charge generating material and a charge transfer material. The charge transfer material contains a triarylamine compound synthesized from an amine compound and an aryl halide in the presence of a catalyst comprising a phosphine compound represented by formula (1) and a palladium compound: wherein Ar1 to Ar3 are each independently an alkyl or aryl group which may have a substituent group, and at least one of Ar1 to Ar3 is an aryl group. A process cartridge includes the electrophotographic photosensitive member.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: October 25, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takakazu Tanaka, Mitsuhiro Kunieda, Yuka Nakajima, Harunobu Ohgaki
  • Patent number: 6818368
    Abstract: An electrophotographic photosensitive member includes a charge generating material and a charge transfer material. The charge transfer material contains a triarylamine compound synthesized from an amine compound and an aryl halide in the presence of a catalyst comprising a phosphine compound represented by formula (1) and a palladium compound: wherein Ar1 to Ar3 are each independently an alkyl or aryl group which may have a substituent group, and at least one of Ar1 to Ar3 is an aryl group. A process cartridge includes the electrophotographic photosensitive member.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: November 16, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takakazu Tanaka, Mitsuhiro Kunieda, Yuka Nakajima, Harunobu Ohgaki
  • Publication number: 20040161692
    Abstract: In a process for forming a self-dispersing crystalline phthalocyanine pigment composition of monodisperse nanoparticles, a mixture containing titanyl fluorophthalocyanines, unsubstituted titanyl phthalocyanine, and an organic monomeric dispersant but substantially free of organic solvents or inorganic salts is dry milled, thereby forming a substantially amorphous phthalocyanine pigment composition. The substantially amorphous composition is contacted with an organic solvent having a hydrogen bonding parameter gammac lower than about 8, thereby forming a self-dispersing cocrystalline phthalocyanine pigment composition of monodisperse nanoparticles containing titanyl fluorophthalocyanines and titanyl phthalocyanine, which can be used to form the charge generation layer of an electrophotographic element.
    Type: Application
    Filed: September 4, 2003
    Publication date: August 19, 2004
    Applicant: NexPress Solutions LLC and Heidelberg Digital LLC
    Inventors: Michel F. Molaire, Louis J. Sorriero
  • Publication number: 20040142257
    Abstract: An organic optoelectronic device includes a solution coatable thin film having a hole transporting material, an electron transporting material, and a photogenerating component uniformly dispersed therein. The thin film is about 0.2 microns or less, and can be spin-coated onto a substrate and further coated with electrodes.
    Type: Application
    Filed: January 21, 2003
    Publication date: July 22, 2004
    Applicant: XEROX CORPORATION
    Inventor: Andronique Ioannidis
  • Publication number: 20040110075
    Abstract: In a process for forming an amorphous TiOPc/TiOFPc pigment mixture containing a low concentration of TiOFPc, a mixture containing phthalonitrile and titanium tetrachloride is subjected to reaction conditions effective to form lightly chlorine-substituted crude crystalline Cl—TiOPc. The lightly chlorine-substituted crude crystalline Cl—TiOPc is combined with crude crystalline TiOFPc in a weight ratio from about 75:25 Cl—TiOPc:TiOFPc to about 99.5:0.5 Cl—TiOPc:TiOFPC to form a crude crystalline pigment mixture, which is treated under conditions effective to form a substantially amorphous pigment mixture of Cl—TiOPc and TiOFPc. The substantially amorphous mixture can subsequently be converted to a nanocrystalline Cl—TiOPc/TiOFPc pigment composition containing a low concentration of TiOFPc.
    Type: Application
    Filed: September 4, 2003
    Publication date: June 10, 2004
    Applicant: NexPress Solutions LLC
    Inventors: Michel F. Molaire, Jeanne E. Kaeding, Theodore Zubil, Jeffrey R. Murray
  • Patent number: 6713223
    Abstract: A device for articulated connection between a control element and a control rod having a ball head comprising a main body attachable to the control element. The main body envelops a locating section providing positive location for the ball head and has an opening area through which the control rod extends when the device is assembled. According to the invention, the locating section is in two parts whereby the main body forms a part into which the ball head can be introduced through a joint duct located outside the opening, while a molding insertable into the joint duct forms the other part of the locating section. As a result, a simple device is created, guaranteeing connection between the control element and the control rod which is backlash-free or has little backlash.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: March 30, 2004
    Assignee: FTE automotive GmbH & Co. KG
    Inventors: Alexander Kühn, Stefan Gebert, Christoph Keller
  • Patent number: 6696214
    Abstract: The invention provides an electrophotographic photoreceptor, in which suppression of image defects and high sensitivity are compatible, and a method for production thereof. The invention also provides a coating fluid for forming a photosensitive layer and a method for production thereof, as well as an image-forming apparatus using said electrophoto-graphic photoreceptor. Briefly, the electrophoto-graphic photoreceptors may be constructed by forming an undercoating layer on a conductive support, and then forming a photosensitive layer on the undercoating layer. The undercoating layer contains titanium oxide particles in at least either needle shape or dendrite shape. The photosensitive layer contains an electric charge-generating material of which the primary particle size and cohesive particle size are in a range of 0.01 &mgr;m-10 &mgr;m. Accordingly, in the electrophotographic photoreceptors, it is possible to maintain high sensitivity and excellent durability and to form an image with no defect.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: February 24, 2004
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Satoshi Katayama, Mikio Kakui, Masayuki Sakamoto, Tatsuhiro Morita, Sayaka Fujita, Tadashi Nakamura
  • Patent number: 6663761
    Abstract: The invention provides a fine pattern forming method in which a pattern interval of a resist pattern is narrowed, and a fine pattern forming material can be certainly formed on a surface of the resist pattern. In the method, a first resist layer containing a material generating acid by heating or light irradiation is coated on a substrate, is exposed through a pattern, and is developed. A developing solution is washed by a washing solution to form a first resist frame, and in a state where the washing solution is adhered to the substrate, a fine pattern forming material containing a material, which is cross-linked by the existence of acid, is coated on the substrate. Acid is generated in the first resist frame by heating or light irradiation, and the first resist frame is covered with a cross-linked layer generated on an interface between the first resist frame and the fine pattern forming material.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: December 16, 2003
    Assignee: TDK Corporation
    Inventor: Akifumi Kamijima
  • Patent number: 6645687
    Abstract: A process comprising forming chlorogallium phthalocyanine (ClGaPc) in N-methyl-2-pyrrolidinone (NMP) to provide a ClGaPc (NMP) Type I; separately dry milling and then wet treating the Type I product to form Type II ClGaPc (NMP); blending the ClGaPc Type II product with hydroxygallium phthalocyanine (HOGaPc) Type V and a resin to form a coating mixture; coating the resulting mixture to form a photoconductive charge generator layer.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: November 11, 2003
    Assignee: Xerox Corporation
    Inventors: Cuong Vong, George Liebermann, Richard A. Burt, Ah-Mee Hor
  • Publication number: 20030175605
    Abstract: The invention provides an electrophotographic photoreceptor, in which suppression of image defects and high sensitivity are compatible, and a method for production thereof. The invention also provides a coating fluid for forming a photosensitive layer and a method for production thereof, as well as an image-forming apparatus using said electrophoto-graphic photoreceptor. Briefly, the electrophoto-graphic photoreceptors may be constructed by forming an undercoating layer on a conductive support, and then forming a photosensitive layer on the undercoating layer. The undercoating layer contains titanium oxide particles in at least either needle shape or dendrite shape. The photosensitive layer contains an electric charge-generating material of which the primary particle size and cohesive particle size are in a range of 0.01 &mgr;m-10 &mgr;m. Accordingly, in the electrophotographic photoreceptors, it is possible to maintain high sensitivity and excellent durability and to form an image with no defect.
    Type: Application
    Filed: January 6, 2003
    Publication date: September 18, 2003
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Satoshi Katayama, Mikio Kakui, Masayuki Sakamoto, Tatsuhiro Morita, Sayaka Fujita, Tadashi Nakamura
  • Patent number: 6613488
    Abstract: A phthalimide salt compound is contained in a photosensitive material having a charge generating function. Such a photosensitive material exhibits high retention rates of the surface charge. An electrophotographic photoconductor comprising such a photosensitive material is useful in, for example, printers, photocopiers, and facsmilie machines.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: September 2, 2003
    Assignee: Fuji Electric Imaging Devices Co., Ltd.
    Inventors: Yoichi Nakamura, Shinjirou Suzuki, Hideki Kina, Kenichi Hara, Teruo Sasaki
  • Publication number: 20030054273
    Abstract: An electrophotographic photosensitive member exhibiting a high sensitivity and a potential stability on repetitive use and capable of suppressing image defects, such as black spots in a reversal development scheme, is provided. The photosensitive member includes a support, and a phthalocyanine layer formed on the support and a novel phthalocyanine crystal, which comprises a phthalocyanine compound and a substituted or unsubstituted condensed polycyclic hydrocarbon compound.
    Type: Application
    Filed: August 23, 2002
    Publication date: March 20, 2003
    Inventors: Masato Tanaka, Hidetoshi Hirano, Kan Tanabe, Kazue Asakura, Atsushi Fujii
  • Patent number: 6524761
    Abstract: A mixture is made of a plurality of different titanyltetraazaporphyrin compounds, each of which is represented by formula (1): wherein A, B, C and D are each independently an unsubstituted or substituted benzene ring or pyridine ring, a substituent thereof being selected from the group consisting of nitro group, cyano group, a halogen atom, an alkyl group having 1 to 8 carbon atoms, an alkoxyl group having 1 to 8 carbon atoms, and an aryl group. The above-mentioned mixture is contained in a photoconductive layer of an electrophotographic photoconductor as a photoconductive material.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: February 25, 2003
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoyuki Shimada, Masayuki Shoshi, Kaoru Tadokoro, Chiaki Tanaka, Michihiko Namba
  • Patent number: 6524763
    Abstract: The object of the present invention is to provide a material which takes on a color or which changes its colors when selectively sensitized by ionizing radiation (especially by low doses of radiation) and which is not sensitive to visible and ultraviolet light etc. This is achieved by microcapsules containing a radiation sensitive composition comprising leuco compounds (a) and organic halogen compounds (b) as indispensable components.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: February 25, 2003
    Assignees: The Japan Atomic Power Company, Nuclear Fuel Industries, Ltd.
    Inventors: Yuji Kuroda, Masahiko Seki, Yumiko Fujita, Mitsuto Montani, Takeshi Sakai, Shozo Suefuku, Hiroyuki Nakazumi