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:
Sep. 30, 2008
Filed:
Apr. 17, 2006
Itaru Furukawa, Kyoto, JP;
Itaru Furukawa, Kyoto, JP;
Dainippon Screen Mfg. Co., Ltd., Kyoto, JP;
Abstract
A conversion computation section acquires the original color density value of a single process color in a given image region and the original color density value of a spot color from raster data, and acquires a pseudocolor conversion rate for conversion from the spot color to the process color from spot color information. Then, the conversion computation section calculates a proof color density value Hof each process color on a pixel-by-pixel basis in each image region by using a conversion computation expressed by H=P+s·G−P·s·Gwhere P(i=C, M, Y or K) is the original color density value of the single process color, s is the original color density value of the spot color, and Gis the pseudocolor conversion rate for conversion from the spot color to the process color. The proof color density value reflects a change in gradation of the process color and a change in gradation of the spot color without the saturation of the color density.