The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 24, 2004
Filed:
Oct. 08, 2002
Gary Allan Ungefug, Corvallis, OR (US);
Vladek P Kasperchik, Corvallis, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
The present invention is drawn to systems and methods for reducing air fade of ink-jet inks, particularly with respect to dye-based ink-jet inks printed on porous media. Specifically, a method of printing an image on porous media with increased air fade resistance can include the steps of (a) providing an ink-jet ink, wherein the ink-jet ink includes a dye and a water-soluble or water dispersable copolymer in a vehicle carrier; (b) providing a porous media substrate having an inorganic porous media coating, wherein the inorganic porous media coating provides voids for the ink-jet ink to fill; and (c) ink-jetting the ink-jet ink onto the porous media substrate, thereby providing an image having increased air fade resistance.