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:
Jul. 27, 1999
Filed:
Jun. 07, 1995
David C Barton, Vancouver, WA (US);
William J Allen, Portland, OR (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A method for alleviating a problem in color graphics printing that incompatible inks, such as true black and color inks, tend to bleed across color field boundaries includes depletion of yellow in the image data so that more blue content is present in the image data. For each pixel, the amount of correction is inversely related to the color saturation and a corresponding correction factor related to the amount of correction is selected to be less than or equal to a preselected maximum correction factor. The presence of blue ink dots within a substantially black field, resulting from the depletion of yellow, reduces bleed along the field edges.