Image processing and ink-jet recording apparatus for...

Details Image processing and ink-jet recording apparatus for... Image processing and ink-jet recording apparatus for...

2008-04-22

2008-04-22

Nguyen, Thinh (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S015000, C358S519000

Reexamination Certificate

active

11235216

ABSTRACT:
When image data output to an ink-jet recording apparatus for performing color recording using inks of a plurality of colors is to be processed, input image data is converted into data corresponding to colors of inks and gamma correction is applied to the data corresponding to colors of inks. In this gamma correction processing, the grayscale value represented by the data is decreased to reduce the amount of shot-in ink. In the present invention, gamma correction for data corresponding to a chromatic ink differs from gamma correction for data corresponding to an achromatic ink such that higher gray level data is decreased by a smaller factor than lower gray level data for the data corresponding to the achromatic ink.

REFERENCES:
patent: 5633663 (1997-05-01), Matsubara et al.
patent: 5661508 (1997-08-01), Sugimoto et al.
patent: 6130685 (2000-10-01), Matsubara et al.
patent: 6893114 (2005-05-01), Yano et al.
patent: 2000-355158 (2000-12-01), None

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