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:
Oct. 31, 2006
Filed:
Jul. 25, 2003
Fay M Sommer, Ann Arbor, MI (US);
Walter F Zawacki, Canton, MI (US);
Fay M Sommer, Ann Arbor, MI (US);
Walter F Zawacki, Canton, MI (US);
Flint Group, Ann Arbor, MI (US);
Abstract
A four-color ink set capable of printing an expanded color gamut has a cyan ink that prints on a reference substrate with CIELAB colorimetric aim values of L*=54, a*=−41, and b*=−45, within a ΔE*≦8; a magenta ink that prints on the reference substrate with CIELAB colorimetric aim values of L*=52, a*=79, and b*=−9, within a ΔE*≦8; a yellow ink that prints on the reference substrate with CIELAB colorimetric aim values of L*=90, a*=−7, and b*=102, within a ΔE*≦10; and a black ink. Obtaining a profile for the expanded gamut ink set, for example an International Color Consortium (ICC) profile, that relates tone values for the ink set to colorimetric values for the printed ink allows the printer to obtain the maximum benefit of the expanded color gamut. The profile for the ink set is applied in a color separation process prior to printing the image on press.