Patents Represented by Attorney, Agent or Law Firm William DeVaul
  • Lightfast ink jet inks
    Patent number: 6641257
    Abstract: An ink with improved lightfastness suitable for thermal ink jet printing contains at least an aqueous vehicle, a dye and a light stabilizer to protect the dye in the ink during exposure to light. Different additives as light stabilizer for individual inks were described herein. A UV Glossy substrate was found to reinforce the lightfastness of print.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: November 4, 2003
    Assignee: American Ink Jet Corporation
    Inventors: Fengying Shi, Paul Doll, Walter Wnek, Michael Andreottola