Image processing apparatus and method having a plurality of imag

Details Image processing apparatus and method having a plurality of imag Image processing apparatus and method having a plurality of imag

1996-07-19

2000-11-14

Braun, Fred L.

Electrophotography

Control of electrophotography process

Color balance

358519, 358521, G03G 1501, G03F 308

Patent

active

061481580

ABSTRACT:
An image processing apparatus includes a plurality of image forming units for performing image formation using predetermined colors. A pattern image is formed by outputting specific pattern data to each image forming unit, density of the pattern image is measured and the gradation correction characteristics are controlled in accordance with the measure density. By performing processing in units of colors corresponding to the image forming units, color image formation having good color balance and gradation characteristics is attained over a long period of time. By controlling gradation correction characteristics in consideration of the density obtained by actually outputting the pattern image onto a recording medium, and reading the pattern image, color image formation having good density reproducibility is realized.

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