Patents by Inventor Kock-Yee Law

Kock-Yee Law has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130096254
    Abstract: A coating for an ink jet printhead front face, wherein the coating comprises an oleophobic low adhesion coating having high thermal stability as indicated by less than about 15 percent weight loss when heated to up to 300° C., and wherein a drop of ultra-violet (UV) gel ink or a drop of solid ink exhibits a contact angle of greater than about 45° and sliding angle of less than about 30° with a surface of the coating, wherein the coating maintains the contact angle and sliding angle after the coating has been exposed to a temperature of at least 200° C. for at least 30 minutes.
    Type: Application
    Filed: October 17, 2011
    Publication date: April 18, 2013
    Applicant: XEROX CORPORATION
    Inventors: Varun Sambhy, Kock-Yee Law, Hong Zhao, Peter Michael Gulvin, James M. Casella
  • Publication number: 20130093814
    Abstract: A printhead has a nozzle plate, having an array of nozzles through which ink is expelled, a low adhesion, oleophobic polymer coating on a front face of the nozzle plate. A printer has a source of solid ink, a heater arranged to-heat the solid ink and convert it to liquid ink, and a printhead, the printhead having a nozzle plate, having an of nozzles through which ink is expelled, a low adhesion, oleophobic polymer coating on a front face of the nozzle plate, the coating selected to dispel the liquid ink prior to the liquid ink returning to solid form, and a wiper positioned to wipe the front face of the nozzle plate.
    Type: Application
    Filed: October 17, 2011
    Publication date: April 18, 2013
    Applicant: XEROX CORPORATION
    Inventors: Peter Michael Gulvin, Varun Sambhy, Hong Zhao, Kock-Yee Law, James M. Casella
  • Publication number: 20130092038
    Abstract: A digital flexography system includes an imaging member with a charge generating layer formed from an array of addressable pixels and a charge transport layer thereon. Ink is delivered to the imaging member using a simple rough donor roll, rather than an anilox roll. Instead of controlling the amount of ink delivered using the anilox roll, the amount of ink is controlled by the pixels on the imaging member.
    Type: Application
    Filed: October 17, 2011
    Publication date: April 18, 2013
    Applicant: Xerox Corporation
    Inventors: Mandakini Kanungo, Kock-Yee Law, George Cunha Cardoso, Jing Zhou
  • Patent number: 8382270
    Abstract: Release layers, and particularly low surface tension aqueous solutions, such as fountain solutions, which function as release layers. These release layers are integrated into copying and printing machines, such as xerographic machines, multifunctional devices, color systems, and the like, wherein the release layers are specifically incorporated onto a hydrophilic roll material for contact leveling of UV curable gel inks.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: February 26, 2013
    Assignee: Xerox Corporation
    Inventors: Varun Sambhy, Bryan J. Roof, Kock-Yee Law, Peter G. Odell, Michelle N. Chretien, Jennifer L. Belelie, Gordon Sisler, Christopher Wagner
  • Patent number: 8384748
    Abstract: Exemplary embodiments provide materials and methods for a printer member used in ink-jet marking systems that can include a layer electrospun over an aluminum roller to facilitate transport of a printable substrate having ink images thereon and to reduce ink offset from the printable substrate.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: February 26, 2013
    Assignee: Xerox Corporation
    Inventors: Kock-Yee Law, Hong Zhao, Varun Sambhy
  • Publication number: 20130044162
    Abstract: Various embodiments provide materials and methods for a superoleophobic device, which can include a conformal oleophobic coating disposed on glass pillars and/or stripe-shaped glass structures on a glass substrate to provide the device with a textured superoleophobic surface.
    Type: Application
    Filed: August 15, 2011
    Publication date: February 21, 2013
    Applicant: XEROX CORPORATION
    Inventors: Hong Zhao, Kock-Yee Law, Yuanjia Zhang
  • Publication number: 20130032051
    Abstract: A method and structure for an ink jet printhead aperture plate assembly which can be part of an ink jet printhead and an ink jet printer. The present teachings can include the use of a protective coverlay interposed between a press plate of a press and an anti-wetting coating on a polyimide layer which forms part of the aperture plate assembly. The coverlay can include a base material which has an elastic modulus which is at least a specified value. An embodiment of the present teachings can form an aperture plate assembly and an ink jet printhead having reduced dimpling and deformation around a nozzle opening in the aperture plate assembly.
    Type: Application
    Filed: August 1, 2011
    Publication date: February 7, 2013
    Applicant: XEROX CORPORATION
    Inventors: James M. Casella, Peter M. Gulvin, Varun Sambhy, Kock-Yee Law, Hong Zhao
  • Patent number: 8348390
    Abstract: Various embodiments provide a device having a multi-scale superoleophobic surface and methods for forming and using the device, wherein a particulate composite layer including metal-containing particulates is formed on a textured micron-/sub-micron surface of a semiconductor layer to provide device with multi-scale rough surface.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: January 8, 2013
    Assignee: Xerox Corporation
    Inventors: Kock-Yee Law, Hong Zhao
  • Publication number: 20120293586
    Abstract: Various embodiments provide a device having a multi-scale superoleophobic surface and methods for forming and using the device, wherein a particulate composite layer including metal-containing particulates is formed on a textured micron-/sub-micron surface of a semiconductor layer to provide device with multi-scale rough surface.
    Type: Application
    Filed: May 18, 2011
    Publication date: November 22, 2012
    Applicant: Xerox Corporation
    Inventors: Kock-Yee Law, Hong Zhao
  • Patent number: 8310509
    Abstract: Various embodiments provide systems and methods for direct digital marking, wherein an electrostatic latent image or a surface charge contrast can be formed and developed at a development nip formed by a nano-enabled imaging member and a negatively-biased development subsystem.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: November 13, 2012
    Assignee: Xerox Corporation
    Inventors: Kock-Yee Law, Yuanjia Zhang, Mandakini Kanungo
  • Publication number: 20120281052
    Abstract: Various embodiments provide materials and methods for direct digital marking, wherein a surface charge contrast can be formed by oppositely addressing adjacent charge injection pixels of a bipolar imaging member and developed with enhanced image contrast at a reduced voltage of the transistors.
    Type: Application
    Filed: May 3, 2011
    Publication date: November 8, 2012
    Applicant: Xerox Corporation
    Inventors: Mandakini Kanungo, Kock-Yee Law, George C. Cardoso
  • Patent number: 8305405
    Abstract: Various embodiments provide systems and methods for digital offset/flexo printing by selectively addressing one or more hole-injecting pixels of a nano-enabled imaging member to form a latent image thereon, wherein the latent image can be electrostatically developed with an ink and then transferred from the nano-enabled imaging member onto a print media.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: November 6, 2012
    Assignee: Xerox Corporation
    Inventors: Kock-Yee Law, Mandakini Kanungo
  • Publication number: 20120274706
    Abstract: An aperture plate for a print head of a printer can include a first layer having a first emissivity which is covered by a second layer having a second emissivity which is less than the first emissivity. In an embodiment, the second layer can be etched at nozzle locations to form openings in the second layer which have widths/areas greater than widths/areas of nozzles formed in the first layer. In another embodiment, the second layer can have a smaller thickness at the nozzle locations and a larger thickness away from the nozzle locations. Forming the openings in the second layer which are larger than the nozzles, or forming the second layer thinner at the nozzle locations prior to forming the nozzles, can provide a well-formed nozzle and an aperture plate having a low emissivity.
    Type: Application
    Filed: April 27, 2011
    Publication date: November 1, 2012
    Applicant: Xerox Corporation
    Inventors: Bryan R. Dolan, Peter M. Gulvin, Hong Zhao, John R. Andrews, Bradley J. Gerner, Antonio L. Williams, Kock-Yee Law, David P. Platt, Terrance L. Stephens
  • Publication number: 20120270344
    Abstract: An ink jet print head front face or nozzle plate having a textured superoleophobic surface that prevents undesirable drooling, wetting and/or adhesion of the ink on the print head. The textured surface includes a rim formed around the nozzle. Also described are methods for forming the textured superoleophobic ink jet print head front face or nozzle plate from silicon having the textured, oleophobic surface.
    Type: Application
    Filed: July 3, 2012
    Publication date: October 25, 2012
    Applicant: XEROX CORPORATION
    Inventors: Hong Zhao, Kyoo-Chul Park, Kock-Yee Law
  • Publication number: 20120268524
    Abstract: An ink jet print head front face or nozzle plate having a textured superoleophobic surface that prevents undesirable drooling, wetting and/or adhesion of the ink on the print head. The textured surface includes a rim formed around the nozzle. Also described are methods for forming the textured superoleophobic ink jet print head front face or nozzle plate from silicon having the textured, oleophobic surface.
    Type: Application
    Filed: July 11, 2012
    Publication date: October 25, 2012
    Applicant: XEROX CORPORATION
    Inventors: Hong Zhao, Kyoo-Chul Park, Kock-Yee Law
  • Patent number: 8292404
    Abstract: A process for preparing a flexible device having a superoleophobic surface comprising providing a flexible substrate; disposing a silicon layer on the flexible substrate; using photolithography to create a textured pattern in the silicon layer on the substrate wherein the textured pattern comprises a groove structure; and chemically modifying the textured surface by disposing a conformal oleophobic coating thereon; to provide a flexible device having a superoleophobic surface.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: October 23, 2012
    Assignee: Xerox Corporation
    Inventors: Hong Zhao, Kock-Yee Law
  • Patent number: 8285184
    Abstract: In accordance with the invention, there are printing apparatuses, fuser members, and methods of making fuser members. The printing apparatus can include a fuser member, the fuser member including a substrate. The fuser member can also include one or more functional layers disposed over the substrate and a top coat layer including a fluorinated nanocomposite disposed over the one or more functional layers, wherein the fluorinated nanocomposite includes a plurality of fluorinated carbon nanotubes dispersed in one or more fluoropolymers.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: October 9, 2012
    Assignee: Xerox Corporation
    Inventors: Kock-Yee Law, Hong Zhao
  • Publication number: 20120242758
    Abstract: An ink jet printhead including a plurality of piezoelectric elements and a photosensitive interstitial layer which fills spaces between each adjacent piezoelectric element. The ink jet printhead can be formed using a simplified method to pattern the photosensitive interstitial layer, and to remove a diaphragm attach material which covers a plurality of openings through a diaphragm using laser ablation.
    Type: Application
    Filed: March 23, 2011
    Publication date: September 27, 2012
    Applicant: Xerox Corporation
    Inventors: Mark A. Cellura, Peter J. Nystrom, Kock-yee Law, John Paul Meyers, Gary Daniel Redding, Yuanjia Zhang
  • Patent number: 8270889
    Abstract: Various embodiments provide low adhesion coatings that can be used for an image-side member in an image fixing system of an electrophotographic printer or an ink jet printer, wherein the low adhesion coatings can exhibit a low sliding angle ranging from about 1° to about 30° with a solid ink, a toner, hexadecane and/or water.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: September 18, 2012
    Assignee: Xerox Corporation
    Inventors: Varun Sambhy, Dale R. Mashtare, Kock-Yee Law, Rachel L. McGrath
  • Patent number: 8233017
    Abstract: Provided are electrostatic latent image generators, printing apparatuses including the electrostatic latent image generators, and methods of forming an electrostatic latent image. The electrostatic latent image generator can include a substrate and an array of pixels disposed over the substrate, wherein each pixel of the array of pixels can include a layer of one or more nano-carbon materials, and wherein each pixel of the array of pixels is electrically isolated and is individually addressable. The electrostatic latent image generator can also include a charge transport layer disposed over the array of pixels, wherein the charge transport layer can include a surface disposed opposite to the array of pixels, and wherein the charge transport layer is configured to transport holes provided by the one or more pixels to the surface.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: July 31, 2012
    Assignee: Xerox Corporation
    Inventors: Kock-Yee Law, Mandakini Kanungo