Means for controlling the change of thickness of lines of photog

Details Means for controlling the change of thickness of lines of photog Means for controlling the change of thickness of lines of photog

1978-06-27

1980-01-15

Griffin, Donald A.

Photocopying

Projection printing and copying cameras

Identifying, composing, or selecting

355 77, G03B 2752, G03B 2732

Patent

active

041836596

ABSTRACT:
A means for controlling the change of thickness of lines of photographically produced briefs which are producible by the agency of a means for photographic reproduction. A control area means comprises at least two area element means, whereby the smallest width of which and the smallest mutual distance of which corresponds to the tolerance of the thickness of lines of a print.

REFERENCES:
patent: 1808123 (1931-06-01), Uher
patent: 3220301 (1965-11-01), Koonz et al.
patent: 3620622 (1971-11-01), Goodwin
patent: 3785733 (1974-01-01), Bender

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