Pretreatment Process To Change The Physical Properties Of Electrophoretic Suspension Or Specified Imaging Feature Exposure Patents (Class 430/34)
  • Patent number: 9670587
    Abstract: A roll-to-roll light directed electrophoretic deposition system and method advances a roll of a flexible electrode web substrate along a roll-to-roll process path, where a material source is positioned to provide on the flexible electrode web substrate a thin film colloidal dispersion of electrically charged colloidal material dispersed in a fluid. A counter electrode is also positioned to come in contact with the thin film colloidal dispersion opposite the flexible electrode web substrate, where one of the counter electrode and the flexible electrode web substrate is a photoconductive electrode.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: June 6, 2017
    Assignee: Lawrence Levermore National Security, LLC
    Inventors: Andrew J. Pascall, Joshua Kuntz
  • Patent number: 8581899
    Abstract: A display medium includes a pair of substrates, a dispersion medium sealed between the pair of substrates, a migrating particle group dispersed in the dispersion medium, and a surface layer provided on at least one of the facing surfaces of the pair of substrates and including a polymer compound that is a copolymer containing the following constitutional unit (A) and constitutional unit (B), X represents a group containing a silicone chain, Ra1 and Ra2 each independently represent a hydrogen atom or a methyl group, Rb2 represents an organic group containing a substituted or unsubstituted phenyl group, n1 and n2 each represent mol % of the constitutional unit relative to the whole copolymer and satisfy 0<n1<50 and 0<n2<80, respectively, and n represents a natural number of 1 or more and 3 or less.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: November 12, 2013
    Assignee: Fuji Serox Co., Ltd.
    Inventors: Hiroaki Moriyama, Yasuo Yamamoto, Yoshinori Machida, Ryota Mizutani
  • Patent number: 8039182
    Abstract: An object is to improve the adhesion strength between a circuit pattern and its substrate without increasing the resistance value of the circuit pattern in preparation of a circuit pattern holding substrate. A circuit pattern formation device 100 forms, after forming a precursor circuit-pattern 12 in the surface of a dielectric thin film body 4, a circuit pattern 14 onto a target substrate 23 from the dielectric thin film body. After forming an electrostatic latent image 2 in the upper surface of the dielectric thin film body, the electrostatic latent image is exposed using an exposure unit 3 to prepare a pattern. A development apparatus 7 supplies a conductive particle dispersion solution 6 to this pattern to form a precursor circuit-pattern. By energizing the circuit pattern holding substrate 8, in which an adhesive layer 22 is formed, the precursor circuit-pattern is temporarily transferred to the circuit pattern holding substrate.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: October 18, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Yuichiro Sano, Toru Miyasaka
  • Patent number: 7982940
    Abstract: The present invention provides particles for display media constituting the display media used for an information display panel, in which the display media are sealed between two substrates, at least one of two substrates being transparent, and, in which the display media, to which an electrostatic field is applied, are made to move so as to display information, comprising: the particles having a substantially spherical shape, which are made by polymerizing raw materials including monomers, which include (acrylic or methacrylic) resin-hydrocarbon resin copolymer in the particles, in which a part of or all of the monomers are a multifunctional monomer having a plurality of polymerization reactive groups in one molecule, and which have minute irregularities on their surface evenly. By such a construction, the particles for display media can obtain irregularities firmly fixed on their surface. Poor display can be solved by using the same.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: July 19, 2011
    Assignee: Bridgestone Corporation
    Inventors: Kazuya Murata, Takao Ohuchi, Hajime Kitano
  • Patent number: 7414775
    Abstract: A display member having improved optical contrast and brightness. The display member includes bichromal capsules, an absorptive layer, an adhesive layer, a substrate and a top layer. The bichromal capsules form a close-packed monolayer configuration positioned on the absorptive layer. The adhesive layer is adjacent to the absorptive layer. The absorptive layer is formed on the substrate. The top layer is formed adjacent the adhesive layer. A method for producing a display member with high optical contrast and brightness. The method includes forming an absorptive layer on a substrate. A close-packed monolayer configuration of bichromal capsules is formed on the absorptive layer by exposing the absorptive layer to a plurality of bichromal capsules. A top layer is formed adjacent the adhesive layer.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: August 19, 2008
    Assignee: Xerox Corporation
    Inventors: Man C. Tam, Peter M. Kazmaier, Naveen Chopra
  • Patent number: 7385751
    Abstract: This invention relates to the field of electrophoretic displays. In particular, it relates to imagewise opening, filling and sealing multicolor display components and the manufacture of multicolor displays.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: June 10, 2008
    Assignee: SiPix Imaging, Inc.
    Inventors: Xianhai Chen, HongMei Zang, Zarng-Arh George Wu, Rong-Chang Liang
  • Patent number: 7327511
    Abstract: Various improvements in electrophoretic media and displays intended for use in light modulators are described. These improvements include index matching of the suspending fluid to a continuous phase surrounding the fluid, index matching of a capsule wall to a binder, planarization of a layer containing electrophoretic capsules before application of adhesive thereto, methods for concentrating electrophoretic particles into limited areas of sidewalls of electrophoretic capsules or microcells in the light-transmissive state of the display, and, in the case of light modulators comprising an electrophoretic layer sandwiched between two transparent plates, forming at least one of the plates so as to absorb electromagnetic radiation which adversely affects the electrophoretic layer.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: February 5, 2008
    Assignee: E Ink Corporation
    Inventors: Thomas H. Whitesides, Michael M. McCreary, Richard J. Paolini, Jr.
  • Patent number: 7267913
    Abstract: An image forming method is disclosed, comprising (a) imagewise exposing a recording material comprising on a support an image forming layer containing colored electrophoretic particles and a photopolymerizable compositon to light to perform photocuring and (b) applying an electric field to the recording material to migrate the electrophoretic particles.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: September 11, 2007
    Assignee: Konica Minolta Holdings, Inc.
    Inventor: Noriyuki Kokeguchi
  • Patent number: 7265895
    Abstract: An object of the present invention is to provide a microcapsule for an electrophoretic display device which can suppress reduction in later contrast even when the electrophoretic display device is allowed to stand under the high temperature and high humidity condition, favorably, under the high temperature and high humidity condition for a long time (e.g. under 60° C., 90% RH for 24 hours). As a means of achieving this object, a microcapsule according to the present invention for an electrophoretic display device comprises an electrophoretic fine particle and a solvent both of which are encapsulated in a shell, and is characterized in that an amount of an alkaline metal ion in the whole microcapsule is 150 ppm or smaller.
    Type: Grant
    Filed: May 6, 2005
    Date of Patent: September 4, 2007
    Assignees: Seiko Epson Corporation, Nippon Shokubai Co., Ltd.
    Inventors: Atsushi Miyazaki, Makoto Matsumoto, Mitsuo Kushino, Teruo Kikuta, Akio Ito
  • Patent number: 7236292
    Abstract: A front plane laminate useful in the manufacture of electro-optic displays comprises, in order, a light-transmissive electrically-conductive layer, a layer of an electro-optic medium in electrical contact with the electrically-conductive layer, an adhesive layer and a release sheet. This front plane laminate can be prepared as a continuous web, cut to size, the release sheet removed and the laminate laminated to a backplane to form a display. Methods for providing conductive vias through the electro-optic medium and for testing the front plane laminate are also described.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: June 26, 2007
    Assignee: E Ink Corporation
    Inventors: Richard D. LeCain, Ara N. Knaian, Steven J. O'Neil, Gregg M. Duthaler, Guy M. Danner, Robert W. Zehner, Alberto Goenaga, Benjamin Max Davis, Randolph W. Chan, Jonathan D. Albert, Glen Crossley
  • Patent number: 7130106
    Abstract: Magnetic display devices include low-density silica coated magnetic and nonmagnetic particles. In a one-particle system, low-density silica coated magnetic particles coated by a sol-gel process are used in combination with non-magnetic particles. In a two-particle system, low-density silica coated magnetic particles coated by a sol-gel process are used in combination with low-density silica coated non-magnetic particles. Display devices employing silica coated magnetic particles minimize the tendency of the magnetic particles to aggregate. Silica coated magnetic particles in a display device results in a magnetic display with improved image stability. Low-density silica coated magnetic particles in a display device allow for particles to move easily through a dispersion fluid in response to a magnetic field.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: October 31, 2006
    Assignee: Xerox Corporation
    Inventors: Carla Cannas, Peter M. Kazmaier, Gabriel Iftime
  • Patent number: 7119937
    Abstract: Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N?), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N?) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C?). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes.
    Type: Grant
    Filed: January 20, 2005
    Date of Patent: October 10, 2006
    Assignee: The Regents of the University of California
    Inventors: Benjamin P. Warner, T. Mark McCleskey, Anthony K. Burrell
  • Patent number: 7118838
    Abstract: An apparatus for forming an image using an electrophoretic particle suspension containing media including: a transitioner for sufficiently lowering a viscosity of the suspension to facilitate mobility of at least some of the electrophoretic particles; and, imaging electrodes for selectively providing an imaging electric field associated with the image to be formed and positioned with respect to the transitioner such that the imaging electric field impinges upon the lowered viscosity suspension; wherein, the imaging electric field is sufficient to cause select ones of the electrophoretic particles in the lowered viscosity suspension to migrate depending upon the image to be formed.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: October 10, 2006
    Assignee: Brother International Corporation
    Inventors: James Douglas Fletcher, Kangning Liang, Mark Anthony Darty
  • Patent number: 7050218
    Abstract: To provide an electrophoretic dispersion capable of reducing or preventing the aggregation of electrophoretic particles, an electrophoretic display device using the electrophoretic dispersion, a method of manufacturing the electrophoretic display device, and an electronic system superior in display performance; an electrophoretic display device (electrophoretic display unit) has: a first substrate with a first electrode; a second substrate with a second electrode opposite the first electrode; and an electrophoretic dispersion provided between the first substrate and second substrate. The electrophoretic dispersion (dispersion for electrophoretic display units) includes a liquid phase insulative dispersion medium and electrophoretic particles dispersed in the dispersion medium, the particles electrophoretically migrated under an influence of an electric field.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: May 23, 2006
    Assignee: Seiko Epson Corporation
    Inventor: Sadao Kanbe
  • Patent number: 6947203
    Abstract: To provide an electrophoretic dispersion capable of reducing or preventing the aggregation of electrophoretic particles, an electrophoretic display device using the electrophoretic dispersion, a method of manufacturing the electrophoretic display device, and an electronic system superior in display performance; an electrophoretic display device (electrophoretic display unit) has: a first substrate with a first electrode; a second substrate with a second electrode opposite the first electrode; and an electrophoretic dispersion provided between the first substrate and second substrate. The electrophoretic dispersion (dispersion for electrophoretic display units) includes a liquid phase insulative dispersion medium and electrophoretic particles dispersed in the dispersion medium, the particles electrophoretically migrated under an influence of an electric field.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: September 20, 2005
    Assignee: Seiko Epson Corporation
    Inventor: Sadao Kanbe
  • Publication number: 20040131959
    Abstract: This invention relates to electrophoretic displays having improved performance.
    Type: Application
    Filed: October 9, 2003
    Publication date: July 8, 2004
    Inventors: Jack Hou, HongMei Zang, Yajuan Chen, Jing-Den Chen, Chih-Yuan Liao, Rong-Chang Liang
  • Patent number: 6365307
    Abstract: An ionic medium, e.g., an ionic liquid, gel-like solid, etc., contacts a photoreceptor, e.g., as used in xerography etc., in order to charge and/or discharge the photoreceptor. A measuring device, e.g., an electrometer or current meter, measures at least one characteristic, e.g., voltage or current, and, if desired, light intensity, of the photoreceptor during or shortly after charging and/or discharging operations.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: April 2, 2002
    Assignee: Xerox Corporation
    Inventor: James M. Markovics
  • Publication number: 20010024761
    Abstract: An image is formed by a process comprising the steps of: preparing a substrate comprising a transparent substrate having formed thereon a transparent electroconductive film and a semiconductor thin film in this order; preparing in a vessel, which can hold an liquid, an aqueous liquid containing a coloring material and an electrodepositable material capable of chemically dissolving or sedimanting/precipitating depending on the change in the pH; connecting a device than can supply an electric current or an electric field in accordance with an image pattern to the transparent electroconductive film of the substrate; fixing the substrate so that the semiconductor thin film is immersed in the aqueous liquid; disposing a counter electrode as another member of an electrode pair in the vessel; disposing a prescribed photomask on the transparent substrate of the substrate; and carrying out light irradiation at the transparent substrate through the photomask so that an electrodeposited film containing the electrodeposi
    Type: Application
    Filed: December 29, 1999
    Publication date: September 27, 2001
    Inventors: SHIGEMI OHTSU, EIICHI AKUTSU, LYONG SUN PU
  • Patent number: 6236493
    Abstract: Optical components have a material-distribution gradient due to nanometer-size particles embedded in a solid matrix. The components are manufactured by forming a dispersion of nanometer-size particles in a liquid, curable matrix material, causing the particles to migrate in the matrix material on the basis of a potential difference to form a distribution gradient, and subsequently curing the matrix material, retaining the distribution gradient. The method is suitable for use in the manufacture of optical lenses with a refractive index gradient.
    Type: Grant
    Filed: October 1, 1998
    Date of Patent: May 22, 2001
    Assignee: Institut für Neue Materialien gemeinnützige GmbH
    Inventors: Helmut Schmidt, Herbert Krug, Peter W. Oliveira, Stefan Sepeur
  • Patent number: 6194488
    Abstract: A method of making polymer-coated pigment particles, involving the steps of providing a plurality of pigment particles, each of which has an outer surface coated with a layer of material that operates as a nucleus for initiating polymerization on the outer surface of each of the pigment particles. The pigment particles are mixed with a reaction mixture containing a solvent and a monomer material, wherein the layer of material coating each of the pigment particles causes the monomer material to polymerize on the outer surface of substantially each of the pigment particles to form a polymer coating thereon.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: February 27, 2001
    Assignee: Copytele, Inc.
    Inventors: Jing Hong Chen, Frederic E. Schubert
  • Patent number: 6067185
    Abstract: Disclosed herein are novel electrophoretic displays and materials useful in fabricating such displays. In particular, novel encapsulated displays are disclosed. Particles encapsulated therein are dispersed within a suspending, or electrophoretic, fluid. This fluid may be a mixture of two or more fluids or may be a single fluid. The displays may further comprise particles dispersed in a suspending fluid, wherein the particles contain a liquid. In either case, the suspending fluid may have a density or refractive index substantially matched to that of the particles dispersed therein. Finally, also disclosed herein are electro-osmotic displays. These displays comprise at least one capsule containing either a cellulosic or gel-like internal phase and a liquid phase, or containing two or more immiscible fluids. Application of electric fields to any of the electrophoretic displays described herein affects an optical property of the display.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: May 23, 2000
    Assignee: E Ink Corporation
    Inventors: Jonathan D. Albert, Barrett Comiskey
  • Patent number: 5963456
    Abstract: A method and apparatus for displaying capillary electrophoresis data wherein absorbance with respect to time is related to graphic values within a graphic range or scale of values and selected graphic values are displayed with respect to time. The selected graphic values may comprise a range hues, color saturation and/or brightness or may represent a monochromatic scale. The resulting representation may be horizontally aligned with the corresponding electrophoretogram absorbance values to provide both a quantitative value (electrophoretogram absorbance values) and qualitative (graphic stripe) display.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: October 5, 1999
    Assignee: Beckman Instruments, Inc.
    Inventors: Gerald L. Klein, Steven P. Katzmann
  • Patent number: 5932633
    Abstract: A method of making polymer-coated pigment particles, involving the steps of providing a plurality of pigment particles, each of which has an outer surface coated with a layer of material that operates as a nucleus for initiating polymerization on the outer surface of each of the pigment particles. The pigment particles are mixed with a reaction mixture containing a solvent and a monomer material, wherein the layer of material coating each of the pigment particles causes the monomer material to polymerize on the outer surface of substantially each of the pigment particles to form a polymer coating thereon.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: August 3, 1999
    Assignee: Copytele, Inc.
    Inventors: Jing Hong Chen, Frederic E. Schubert
  • Patent number: 5840452
    Abstract: An electrophotographic process includes providing an organic photoconductor comprised of a charge generation layer and a charge transport layer containing a poly(alkanedioic acid 2,6-dimethoxyanthracene-9,10-diol ester) resin formed on a conductive substrate, and having a half decay exposure; and eliminating static from the organic photoconductor by illuminating the organic photoconductor with a static elimination light having a wavelength ranging from 520 to 680 nm and with a dose of the static elimination light which ranges from 3 to 10 times the half decay exposure of the organic photoconductor. Preferably, the wavelength of the static elimination light ranges from 550 to 650 nm.
    Type: Grant
    Filed: November 29, 1996
    Date of Patent: November 24, 1998
    Assignee: Fuji Electric Company, Ltd.
    Inventor: Seizo Kitagawa
  • Patent number: 5811156
    Abstract: A method of making a color filter array on a first substrate having an array of pixels, comprising the steps of: providing a transferable colorant on a second substrate and positioning such transferable layer in transferable relationship with the first substrate; transferring the colorant layer to the first substrate layer; applying a photoresist layer onto the colorant layer; and patterning the photoresist to form selected pads over pixels in the array; and etching the colorant layer through the openings in the patterned photoresist, leaving a portion of the colorant layer over the selected pixels.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: September 22, 1998
    Assignee: Eastman Kodak Company
    Inventor: Luther C. Roberts
  • Patent number: 5360689
    Abstract: A process for forming dielectric particles includes admixing a vinyl halide monomer and a crosslinker in a liquid dispersion medium to form a first mixture. A second mixture of an initiator and a stabilizer is prepared and added to the first mixture to form a third mixture in which the monomer polymerizes to form white crystalline polymer particles which are sonified for uniformity. The particles may be stained by exposure to a dehydrohalegenation reagent and dispersed in an electrophoretic fluid for use in an electrophoretic display.
    Type: Grant
    Filed: May 21, 1993
    Date of Patent: November 1, 1994
    Assignee: Copytele, Inc.
    Inventors: Wei-Hsin Hou, Thomas B. Lloyd, Frederic E. Schubert
  • Patent number: 4761357
    Abstract: Electrophoretic process and apparatus for developing an electrostatic charge pattern carried by a dielectric surface by progressively moving that surface through a development station and simultaneously progressively advancing a layer of liquid toner (11) comprised of toner particles dispersed in a carrier liquid, through that station in proximity to said charge-carrying surface, (3), and imposing an electric field bias to cause or promote selective image-wise movement of toner particles through said liquid at said development station and deposition thereof on said charge-carrying surface in a pattern representing said electrostatic charge pattern, wherein said layer of liquid toner contains toner particles in a concentration of from 2 to 25% by weight, and including the step of applying a film of a substantially toner-free non-polar liquid which is miscible with the carrier liquid of said liquid toner and which has a specific conductivity lower than 0.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: August 2, 1988
    Assignee: AGFA-Gevaert N.V.
    Inventors: Serge M. Tavernier, Pierre R. De Roo, Jozef L. Mampaey, Robert F. Janssens
  • Patent number: 4258112
    Abstract: Compounds selected from the group consisting of (a) aromatic amines having a p-alkyl, p-alkoxy or p-alkoxycarbonyl substituent on the aromatic group, (b) aromatic alkanes, isoalkanes and cycloalkanes, having at least two aromatic groups with at least one aromatic group having an amino substituent, (c) dialkylarylamines having a pyranylalkenyl, a quinolinylalkenyl or a arylazo substituent on the aryl group, (d) a julolidine and (e) a isobenzofuran are useful as sensitizers in electrophoretic migration imaging dispersions and processes.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: March 24, 1981
    Assignee: Eastman Kodak Company
    Inventors: Joseph Y. Kaukeinen, Hal E. Wright
  • Patent number: 4179290
    Abstract: A photoelectrophoretic image-forming process utilizing a pair of electrodes with at least one of the electrodes being transparent and at least one of the electrodes having an electrically insulating surface, which comprises the following steps of:(1) forming a liquid film which comprises a suspension of light-sensitive particles in an electrically insulating carrier liquid on the electrically insulating surface of one of the electrodes (hereinafter called the first electrode),(2) in a first showering, showering the liquid film with corona ions of either a positive polarity or a negative polarity to form an electrically charged liquid film,(3) in a further showering, showering the electrically charged liquid film with corona ions containing corona ions of a polarity opposite to the polarity of the corona ions showered in the first showering,(4) positioning the other electrode (the second electrode) facing the first electrode with the liquid film therebetween,(5) image-wise exposing the liquid film through the
    Type: Grant
    Filed: March 8, 1978
    Date of Patent: December 18, 1979
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Isoji Takahashi