Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2006-08-29
2006-08-29
Shah, Manish S. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Controller
C347S043000, C347S015000
Reexamination Certificate
active
07097270
ABSTRACT:
The invention makes it possible to realize controlling of the density-gradation characteristics that is superior in that gray balance of tertiary color is taken into account as compared to conventional control of the density-gradation characteristics that uses only density sensor, in an individual color image forming apparatus. The density of an unfixed patch is detected before a fixing operation. The color of a fixed patch formed on a transferring material is also detected. Calibration tables for cyan, magenta, yellow and black for converting gradients in given image information into gradients matched with density-gradation characteristics of the color image forming apparatus are corrected based on results of the above-mentioned detections, thereby controlling density-gradation characteristics.
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