Postdeveloping Step Patents (Class 430/117.2)
  • Patent number: 10908548
    Abstract: The present disclosure relates to a process for selectively printing an image onto a substrate. The process comprises electrophotographically printing a first ink composition onto selected areas of a substrate. The process also comprises applying a primer over at least the unprinted areas of the substrate. A second ink composition is printed onto the primer and the first ink composition is removed from the selected areas of the substrate. The first ink composition is a transparent electrophotographic ink composition.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: February 2, 2021
    Assignee: HP Indigo B.V.
    Inventors: Inna Tzomik, Hannoch Ron, Gleb Romantcov, Faina Kogan, Sergio Brandriss
  • Publication number: 20090061347
    Abstract: Base soluble polymer comprising at least one sulfonyl group where at least one carbon atom at ?-position and/or ?-position and/or ?-position with respect to the sulfonyl group has a hydroxyl group, where the hydroxyl group is protected or unprotected are described.
    Type: Application
    Filed: November 3, 2008
    Publication date: March 5, 2009
    Inventors: David Abdallah, Francis Houlihan
  • Patent number: 7452640
    Abstract: An object of the present invention is to provide an electrophotographic photoconductor for liquid development, having high resistance to a carrier solvent for use in a liquid developing method and having practically high sensitivity, an image-forming apparatus including the photoconductor, and an image forming method. To achieve this object, the present invention provides an electrophotographic photoconductor for liquid development including a support, and a photosensitive layer on or above the support, wherein the photosensitive layer includes a charge-generating material, a charge-transporting material, and an acceptor compound, and the charge-transporting material includes a charge-transporting polymer having a specified structure.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: November 18, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayuki Shoshi, Masaomi Sasaki, Akio Kojima