Method of making correction for color sensor output values...

Details Method of making correction for color sensor output values... Method of making correction for color sensor output values...

2007-07-03

2007-07-03

Lee, Thomas D. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S504000

Reexamination Certificate

active

10285566

ABSTRACT:
Provided are a method of making correction for color sensor output values in color image forming apparatus, which succeeds in improving color reproducibility of the color image forming apparatus, and the color image forming apparatus provided with the method. For this purpose, the apparatus and method according to the present invention make correction for deviation due to a color detecting device, of a color sensor output value Siin detection of a fixed patch; set a boundary turning point D between an ignorable region of toner bearing amounts where the influence of a color of a transferring material is ignorable on chromaticity of the patch and an unignorable region of toner bearing amounts where the influence is unignorable; make further correction for a corrected value Si′wafter the correction for the deviation due to the color detecting device, using different methods for the unignorable region and the ignorable region, thereby to eliminate the influence of the color of the transferring material on the chromaticity of the patch.

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U.S. Appl. No. 10/286,775, filed Nov. 4, 2002.

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