Apparatus for recording color image using mask members

Details Apparatus for recording color image using mask members Apparatus for recording color image using mask members

1989-01-27

1991-05-14

Gellner, Michael L.

Photocopying

Projection printing and copying cameras

With developing

355100, G03B 2752

Patent

active

050160427

ABSTRACT:
An image recording apparatus records an image of an original on a photosensitive recording medium using a plurality of intermediate sheets. The image of the original includes a fine line image, such as character, symbol, and a half-tone image, such as picture. To form a latent image of the fine line image on the recording medium, a light sheilding image corresponding exactly to the fine line image is printed on one of the intermediate sheets while completely masking an area where the half-tone image exists. On the other hand, to form a latent image of the half-tone image of a particular color, a light shielding image corresponding to the half-tone image of such a color is printed on another intermediate sheet, and another light sheilding image is printed thereon with a thicker line than the original fine line image. Accordingly, toner powder or ink needed for producing the intermediate sheets can be saved and thus cost for producing the same is reduced.

REFERENCES:
patent: 4231659 (1980-11-01), Logan
patent: 4537490 (1985-08-01), Stoudt
patent: 4810614 (1989-03-01), Sangyoji et al.

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