Liquid Development Patents (Class 430/117.1)
  • Patent number: 9482979
    Abstract: A liquid toner dispersion provided with marking particles comprising a pigment and a polyester based resin. The dispersion includes a nonpolar organic solvent and a hyperdispersant including a graft copolymer provided with an anchor group including an amine-functionalized polymer onto which at least one stabilizing group is grafted. The stabilizing group includes a hydroxylated fatty acid oligomer. The amine-functionalized polymer has a weight-average molecular weight of less than 1000 g/mol.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: November 1, 2016
    Assignee: Xeikon IP BV
    Inventors: Werner Jozef Johan Op de Beeck, Lode Erik Dries Deprez, Geert Gaston Paul Deroover
  • Patent number: 9017915
    Abstract: The present disclosure provides inks, systems, and methods directed towards dispersed pigments. In one embodiment, an electrophotographic ink can comprise an aliphatic solvent and a pigment having a surface comprising carbonyl groups stabilized by an amine dispersant having the structure: R1R2N[(CH2)nNR5]m(CH2)pNR3R4, where R1, R3, R4, and R5 are independently selected from the group of H; COR6; COOR6; CONHR6; linear or branched, substituted or unsubstituted, alkyl; linear or branched, substituted or unsubstituted, aryl; and combinations thereof; R2 is an aliphatic polymer chain; R6 is selected from the group of H; linear or branched, substituted or unsubstituted, alkyl; linear or branched, substituted or unsubstituted, aryl; and combinations thereof; m is from 0 to 200; n is from 1 to 20; and p is from 1 to 20; where the electrophotographic ink has a low field conductivity of less than 200 pS/cm and a viscosity from about 0.5 to about 40 cps.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: April 28, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sivapackia Ganapathiappan, Hou T. Ng
  • Patent number: 8951704
    Abstract: A toner includes a crystalline polyester resin having an unsaturated double bond, a thiol compound having a bi- or more-functional thiol group, and a photopolymerization initiator.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: February 10, 2015
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Koji Horiba, Yoshihiro Inaba, Daisuke Yoshino, Takako Kobayashi, Akira Imai, Masahiro Oki, Hiroyuki Moriya
  • Patent number: 8911925
    Abstract: A liquid developer contains a carrier liquid, and toner particles containing a binder resin and a pigment surface-treated with a polyallylamine compound as a colorant.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: December 16, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masahiro Oki, Yoshihiro Inaba, Akira Imai, Daisuke Yoshino, Takako Kobayashi, Koji Horiba
  • Publication number: 20140295343
    Abstract: A liquid developer includes a toner in which a compound having a charge-accepting functional group has been bonded to a surface of toner particles, and a carrier liquid which makes a charge density of a surface of the toner become 1 ?C/m2 or less when the toner is dispersed in the carrier liquid.
    Type: Application
    Filed: August 13, 2013
    Publication date: October 2, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Satoshi TATSUURA, Keitaro MORI, Kazunari KOMATSUZAKI, Yutaka NOGAMI
  • Patent number: 8741527
    Abstract: A liquid developer includes: a carrier liquid; and toner particles that are dispersed in the carrier liquid and that includes a styrene-based thermoplastic elastomer, a styrene-based thermoplastic resin, and a quaternary ammonium base-containing polymer having a constituent unit expressed by Chemical Formula I: wherein R1 represents hydrogen or an alkyl group with a carbon number equal to or less than 3, R2 represents an alkylene group with a carbon number equal to or less than 18, R3 to R5 represent an alkyl group or an aralkyl group with a carbon number equal to or less than 18, X represents —COO— or —CONH—, and Y? represents a halogen ion or an anion having a —COO— group or a —SO3— group in the structure thereof.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: June 3, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshihiro Inaba, Akira Imai, Daisuke Yoshino, Takako Kobayashi, Koji Horiba, Takahiro Ishizuka, Masahiro Oki, Ryosaku Igarashi
  • Patent number: 8512930
    Abstract: A matte liquid toner suitable for use in a liquid toner printer, comprising a carrier liquid, toner particles comprising a resin and substantially uncolored additive particles of average diameter between 1 and 20 micrometers dispersed in the resin.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: August 20, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ehud Chatow, Haim Victor Gal, Galia Golodetz
  • Patent number: 8288068
    Abstract: A toner for use in liquid electrostatic printing, comprising: a carrier liquid; and, a plurality of toner particles, the toner particles being comprised of a pigment; and a mixture of resins, a major portion of the mixture comprising at least a first resin and a minor portion comprising at least one second resin, the second resin having an affinity for the pigment, that is greater than the affinity of the first resin for the pigment, such that the amount of free pigment in the carrier liquid separate from the toner particles is reduced over the amount that would be present in the absence of the at least one second resin of the minor portion.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: October 16, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Victor Gal, Galia Golodetz, Jose Kuperwasser
  • Patent number: 8263312
    Abstract: Antireflective coatings comprising (i) a silsesquioxane resin having the formula (PhSiO(3-x)/2(OH)x)mHSiO(3-x)/2(OH)x)n(MeSiO(3-x)/2(OH)x)p where Ph is a phenyl group, Me is a methyl group, x has a value of 0, 1 or 2; m has a value of 0.01 to 0.99, n has a value of 0.01 to 0.99, p has a value of 0.01 to 0.99, and m+n+p=1; (ii) a polyethylene oxide fluid; and (iii) a solvent; and a method of forming said antireflective coatings on an electronic device.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: September 11, 2012
    Assignee: Dow Corning Corporation
    Inventors: Peng-Fei Fu, Eric Scott Moyer
  • Patent number: 8252498
    Abstract: Amphiphilic toner which has both hydrophilic groups and lipophilic groups in the molecule, use thereof for an electrophoretic printing process, and method for an electrophoretic printing process using it. The toner is first dispersed in a non-polar carrier liquid, the toner-containing carrier liquid being transported from a charge image carrier by means of a transfer roller to a point of transfer and from there transferred to a substrate. A polar liquid is added before transfer of the toner to the substrate.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: August 28, 2012
    Assignee: Oce Printing Systems GmbH
    Inventor: Michael Pohlt
  • Publication number: 20120189954
    Abstract: A liquid developer includes: a carrier liquid and toner particles dispersed in the carrier liquid, including a binder resin which contains a thermoplastic resin having repeating units derived from a monomer having a styrene skeleton and repeating units derived from a monomer having an acrylic ester structure, and a thermoplastic elastomer resin that is a block copolymer, the block copolymer having a first block portion including repeating units derived from a monomer having a styrene skeleton, a second block portion including repeating units derived from an alkene having 2 to 6 carbon atoms, and a third block portion including repeating units derived from a monomer having a styrene skeleton and these block portions being bonded in this order.
    Type: Application
    Filed: August 18, 2011
    Publication date: July 26, 2012
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Koji HORIBA, Yoshihiro INABA, Ryosaku IGARASHI, Akira IMAI, Takako KOBAYASHI, Daisuke YOSHINO, Takahiro ISHIZUKA
  • Patent number: 8119315
    Abstract: An imaging member for ink-based digital printing having an outermost layer including a structured organic film (SOF) having a plurality of segments and a plurality of linkers arranged as a covalent organic framework, wherein the structured organic film may be multi-segment thick.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: February 21, 2012
    Assignee: Xerox Corporation
    Inventors: Matthew A. Heuft, Eugene M. Chow, Adrien P. Cote, Nan-Xing Hu
  • Patent number: 8119314
    Abstract: An imaging member for a xerographic liquid immersion development machine having an outermost layer including a solvent resistant structured organic film (SOF) having a plurality of segments and a plurality of linkers arranged as a covalent organic framework, wherein the structured organic film may be multi-segment thick.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: February 21, 2012
    Assignee: Xerox Corporation
    Inventors: Matthew A. Heuft, Adrien P. Cote, Nan-Xing Hu, Hadi K. Mahabadi
  • Publication number: 20120009517
    Abstract: The present disclosure provides inks, systems, and methods directed towards polyurethane encapsulated pigments. In one embodiment, an electrophotographic ink can comprise an electrophotographic ink vehicle and a polyurethane encapsulated pigment. The polyurethane encapsulated pigment can comprise a pigment and a polyurethane, wherein the polyurethane fully encapsulates the pigment and forms the outer-surface of the polyurethane encapsulated pigment with a surface roughness of less than 100 nm. Additionally, the electrophotographic ink can have a residual monomer content of less than 0.01 wt % of the electrophotographic ink.
    Type: Application
    Filed: July 7, 2010
    Publication date: January 12, 2012
    Inventors: Sivapackia Ganapathiappan, Hou T. Ng
  • Publication number: 20120009516
    Abstract: The present disclosure provides inks, systems, and methods directed towards dispersed pigments. In one embodiment, an electrophotographic ink can comprise an aliphatic solvent and a pigment having a surface comprising carbonyl groups stabilized by an amine dispersant having the structure: R1R2N[(CH2)nNR5]m(CH2)pNR3R4, where R1, R3, R4, and R5 are independently selected from the group of H; COR6; COOR6; CONHR6; linear or branched, substituted or unsubstituted, alkyl; linear or branched, substituted or unsubstituted, aryl; and combinations thereof; R2 is an aliphatic polymer chain; R6 is selected from the group of H; linear or branched, substituted or unsubstituted, alkyl; linear or branched, substituted or unsubstituted, aryl; and combinations thereof; m is from 0 to 200; n is from 1 to 20; and p is from 1 to 20; where the electrophotographic ink has a low field conductivity of less than 200 pS/cm and a viscosity from about 0.5 to about 40 cps.
    Type: Application
    Filed: July 7, 2010
    Publication date: January 12, 2012
    Inventors: Sivapackia Ganapathiappan, Hou T. Ng
  • Patent number: 8029964
    Abstract: A polymer-based pattern mask system and methods of masking and patterning a substrate employ an organosilane to enhance adhesion between a pattern mask and the substrate. The substrate is compatible with the organosilane. The methods include applying a coating of the organosilane to a substrate surface and printing a pattern mask on the coated surface using a roll-to-roll printing process. The pattern mask is polymer-based. The organosilane enhances adhesion during printing of the pattern mask. The method of patterning further includes patterning the substrate surface and lifting-off the pattern mask. The organosilane further enhances adhesion during patterning and does not hinder lifting-off the pattern mask. The system includes the pattern mask, the organosilane and a lift-off agent to remove the pattern mask.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: October 4, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: A. Marcia Almanza-Workman, Carl P. Taussig
  • Patent number: 8017293
    Abstract: A liquid toner-based pattern mask system and methods of masking and patterning a substrate employ a polymer-based liquid toner as a pattern mask. The liquid toner is deposited on the substrate in a masking pattern. The pattern mask is lifted off of the substrate after patterning the substrate using a lift-off technique that breaks a bond between the surface of the substrate and the pattern mask.
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: September 13, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: A. Marcia Almanza-Workman, Carl P. Taussig
  • Publication number: 20110217650
    Abstract: The present disclosure is drawn to compositions and methods for a liquid electrophotographic ink printing. The composition comprises a liquid vehicle; ink particles; and a charge director system, comprising i) a primary charge component, ii) a secondary charge component, and iii) an electrical stability additive; such that the charge director system provides the following ink conductivities: a high field conductivity of about 100 pS/cm to about 500 pS/cm, a low field conductivity of about 20 pS/cm to about 200 pS/cm, a direct charge conductivity less than about 30 pS/cm, and a particle conductivity of at least 100 pS/cm. Additionally, the liquid electrophotographic ink can be formulated for printing from a liquid electrophotographic printer.
    Type: Application
    Filed: November 5, 2008
    Publication date: September 8, 2011
    Applicant: Hewlett-Parkard Development Company, L.P.
    Inventors: Ilanit Mor, Shahar Stein, Elliad Silcoff, Albert Teishev, Julia Kornilov
  • Publication number: 20110177449
    Abstract: An image forming apparatus includes a latent image carrier on which a latent image is formed, a developer carrier being in contact with the latent image carrier and configured to develop the latent image by using a liquid developer that contains toner and a carrier liquid, an image carrier belt being in contact with the latent image carrier, where the latent image carrier is configured to transfer the latent image onto an area of the image carrier belt, a transfer roller including a concave section on a circumferential surface thereof and a sheet member being configured on a part of the circumferential surface other than where the concave section is wherein the transfer roller is configured to transfer the latent image onto a transfer material, and a control unit being configured to control the area of the image carrier belt being in contact with the sheet member via the transfer material.
    Type: Application
    Filed: January 18, 2011
    Publication date: July 21, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shinichi TANAKA, Ken IKUMA
  • Publication number: 20110003245
    Abstract: Amphiphilic toner which has both hydrophilic groups and lipophilic groups in the molecule, use thereof for an electrophoretic printing process, and method for an electrophoretic printing process using it. The toner is first dispersed in a non-polar carrier liquid, the toner-containing carrier liquid being transported from a charge image carrier by means of a transfer roller to a. point of transfer and from there transferred to a substrate. A polar liquid is added before transfer of the toner to the substrate.
    Type: Application
    Filed: June 30, 2010
    Publication date: January 6, 2011
    Applicant: OCE PRINTING SYSTEMS GMBH
    Inventor: Michael POHLT
  • Publication number: 20100047700
    Abstract: A liquid developer for electrography, comprising toner particles dispersed in a liquid carrier, wherein the toner particles include a pigment, a thermoplastic resin, and an organic filler, which organic filler is reactive with groups of the thermoplastic resin and incompatible with the liquid carrier.
    Type: Application
    Filed: October 13, 2006
    Publication date: February 25, 2010
    Inventors: Albert Teishev, Stolin Roditi, Michael Shishkin
  • Publication number: 20090311614
    Abstract: A charge director material for charging a liquid toner, the charge director material comprising (a) nanoparticles of a simple salt and (b) a sulfosuccinate salt of the general formula MAn, wherein M is a metal, n is the valence of M, and A is an ion of the general formula (I) [R1—O—C(O)CH2CH(SO3?)C(O)—O—R2],??(I) wherein each of R1 and R2 is an alkyl group; said charge director material being substantially free of acids of the general formula (I), wherein one or both of R1 and R2 is hydrogen, and if only one of them is hydrogen, the other is an alkyl group,
    Type: Application
    Filed: May 10, 2006
    Publication date: December 17, 2009
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Yaacov Almog, Avi Koller, Elliad Silcoff, Albert Teishev, Yaffa Israeli, Gary Larson, Lufei Lin
  • Patent number: 7592117
    Abstract: A method comprising generating a clear layer on a first surface using a transparent liquid toner, generating a color layer using a pigmented liquid toner over the clear layer on the first surface, and transferring the clear layer and the color layer from the first surface to a substrate is provided.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: September 22, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Bruce J. Jackson, Judson Leiser, Peter Gysling
  • Patent number: 7560215
    Abstract: The invention provides a printed circuit board (PCB) printing system. In a particular embodiment, the system includes a liquid electrophotographic printing device. At least one supplier of electrically conductive ink supplying electrically conductive ink to the electrophotographic printing device is also provided. In addition, at least one supplier of dielectric ink supplying dielectric ink to the electrophotographic printing device is also provided. The liquid electrophotographic printing device is operable to apply the electrically conductive ink and the dielectric ink to a provided substrate such that substantially immiscible boundary delineation occurs at any points of contact between the applied electrically conducive ink and the applied dielectric ink. An appropriate method of use for the rendering of a printed circuit board is also provided.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: July 14, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Manish Sharma, Lung Tran
  • Patent number: 7556907
    Abstract: A liquid developer which has excellent preservability, storage stability for a long period of time, and fixing characteristic of toner particles and which is also harmless to the environment is provided. The liquid developer contains an insulation liquid and toner particles dispersed in the insulation liquid. The insulation liquid contains a saturated fatty acid and at least one component selected from a group comprising a linolenic acid component, a linoleic acid component and an oleic acid component. The liquid developer may contain an antioxidizing agent and an oxidation polymerization accelerator for accelerating an oxidation polymerization reaction of the linolenic acid component, the linoleic acid component or the oleic acid component during a fixing process.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: July 7, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Teshima, Koji Akioka
  • Publication number: 20090162624
    Abstract: A process for printing on substrates, wherein the substrates are pretreated with a composition which comprises a polymer obtainable by free radical polymerization of ethylenically unsaturated compounds (monomers) (referred to below as polymer for short), and at least 1% by weight of the monomers are monomers having two carboxyl groups (dicarboxylic acid) or a dicarboxylic anhydride group (summarized below as anhydride monomer for short).
    Type: Application
    Filed: May 16, 2007
    Publication date: June 25, 2009
    Applicant: BASF SE
    Inventors: Hildegard Stein, Roland Ettl, Hubertus Peter Bell
  • Patent number: 7517622
    Abstract: A printing method comprising: forming a first image utilizing a liquid toner comprising carrier liquid and pigmented polymer particles having a first color; transferring the first image to an intermediate transfer member, forming at least one additional image utilizing a liquid toner comprising at least one carrier liquid and pigmented polymer particles having a second color, different from the first color, transferring the at least one additional image to the intermediate transfer member overlaid on the first image, to form a composite image on the intermediate transfer member; and further transferring the composite image to a further substrate, wherein said polymer particles in said first liquid toner and in at least one of said additional liquid toners have different compositions, aside from colorants, the differences in composition including at least one of different polymers or blends of polymers, different amounts or types of plasticizers, different amounts of solvated liquid and different compositions
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: April 14, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Galia Golodetz, Benzion Landa, Yosef Cohen, Ehud Chatow, Paul Fenster
  • Publication number: 20080102648
    Abstract: A method of forming a resist pattern in a semiconductor device layer includes forming a buffer layer on a semiconductor device layer and forming a resist layer on the buffer layer. A decomposing agent is released into a portion of the buffer layer by a portion of the resist layer whereupon the portion of the buffer layer and the portion of the resist layer are removed to form a process window substantially free of resist residue that can be subsequently exploited for etching of the semiconductor device layer.
    Type: Application
    Filed: November 1, 2006
    Publication date: May 1, 2008
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chin-Hsiang Lin, Hsiao-Tzu Lu, Kuei Shun Chen, Ching-Yu Chang, Vencent Chang