Exposure unit in an image recording apparatus

Details Exposure unit in an image recording apparatus Exposure unit in an image recording apparatus

1988-12-15

1990-05-08

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

With developing

355 32, 355 35, G03B 2732, G03B 2752

Patent

active

049242555

ABSTRACT:
In order to adjust light components, there is provided a filter unit which includes a light source for emitting a light, a filter housing to which an opening is formed; and three filters arranged in vertical direction within the filter housing and adapted to be drawn from the opening. Each of the three filters adjusts one of red, blue and green components contained in the light. A drive unit is further included in the filter housing which selectively draws the three filters from the opening to an optical path. Accordingly, the light components can be adequately adjusted by drawing the filters in the optical path. By the employment of such a filter unit in a color image recording apparatus, the color tone of the image reproduced in a copy sheet can be adjusted.

REFERENCES:
patent: 3775006 (1973-11-01), Hartman et al.
patent: 3923393 (1975-12-01), Inoue et al.
patent: 4603969 (1986-08-01), Terashita
patent: 4746955 (1988-05-01), Slayton et al.

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