Color image recorder with correction of gradation errors in ligh

Details Color image recorder with correction of gradation errors in ligh Color image recorder with correction of gradation errors in ligh

1989-08-09

1990-08-14

Reynolds, Bruce A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

346107R, 346108, 346160, 3461601, 346157, 358 75, 358302, B41J 2465, G01D 1514, H04N 129

Patent

active

049491849

ABSTRACT:
An image recording apparatus of the type using intermediate mask members having thereon intermediate light shielding images. To reproduce a color image, three mask members are produced which correspond to three primary colors. Each of the mask member carries thereon a light shielding image corresponding to one of the three primary colors contained in the original image wherein the light shielding image yields a first gradation error with respect to the original image. A photosensitive recording medium is successively exposed to light through the mask members to form a latent image corresponding to the light shielding images. The latent image formed on the photosensitive recording medium is developed to provide a visible image on a developer sheet wherein the visible image yields a second gradation error with respect to the light shielding image. To reproduce a color image with no error in gradation expression as compared with the gradation expression of the original image, the first gradation error and the second gradation error is corrected.

REFERENCES:
patent: 4772922 (1988-09-01), Kawahara
patent: 4782352 (1988-11-01), Misono
patent: 4785316 (1988-11-01), Yamamoto
patent: 4810614 (1989-03-01), Sangyoji
patent: 4825256 (1989-04-01), Nakai
patent: 4864353 (1989-09-01), Okamoto
patent: 4884082 (1989-11-01), Sonoda
patent: 4893010 (1990-01-01), Tomatsu

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