Patents Assigned to Lith-Kem Corporation
  • Printing plate comprising diazo-borofluoride and diazo resin layers
    Patent number: 3933499
    Abstract: An aqueous developable subtractive printing plate is presented comprising a photosensitized hydrophilic surface having a photosensitive diazo-borofluoride salt thereon.A method for making a photosensitized printing plate is also presented wherein a photosensitive diazo-borofluoride salt is coated on the plate.
    Type: Grant
    Filed: July 24, 1974
    Date of Patent: January 20, 1976
    Assignee: Lith-Kem Corporation
    Inventor: Richard T. Traskos