Method of eliminating black banding occurring in the process of

Details Method of eliminating black banding occurring in the process of Method of eliminating black banding occurring in the process of

1980-05-28

1983-03-29

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Methods

355 7, 355 14E, 355 69, 355 71, G03B 2732, G03B 2772

Patent

active

043781560

ABSTRACT:
A method of eliminating black banding occurring along the boundary line of an exterior information signal image and a pictorial original image in the process of recording compound information includes control of the luminance intensity of a scanning reproducing device immediately prior to and/or immediately following external information transfer thereby onto the photosensitive receiving surface. Such control provides gradual, timed increase of the luminance intensity of the device immediately prior to normal activation thereof, and/or gradual, timed decrease of the luminance intensity of the device immediately following normal deactivation thereof, so as to predeterminately merge the compounded images and thereby eliminate the black banding phenomenon.

REFERENCES:
patent: 3681527 (1972-08-01), Nishiyama et al.
patent: 4042962 (1977-08-01), Yamaji et al.
patent: 4251152 (1981-02-01), Miyakawa et al.
patent: 4296423 (1981-10-01), Nakamura
patent: 4303332 (1981-12-01), Sakai

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