Patents Assigned to Sun Chemical
  • Offset lithographic printing process with a water based ink
    Patent number: 5778789
    Abstract: An offset lithographic printing process comprising printing at a relative humidity of 75-90% utilizing a water-based, single fluid, fountain solution free, printing ink containing (a) a macromolecular binder composed of binders soluble in water regardless of the pH of the water; resin rosin salt binders soluble in water at a pH from 7.5 to 10; and aqueous emulsion binders; (b) pigment and; (c) a re-wetting agent.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: July 14, 1998
    Assignees: Sun Chemical, Heidelberg Harris
    Inventors: Ramasamy Krishnan, Marilyn C. Yamat, Hugo Babij, Roland T. Palmatier, Robert R. Murray