Device for and method of producing photographs of controlled con

Details Device for and method of producing photographs of controlled con Device for and method of producing photographs of controlled con

1983-09-20

1986-04-01

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 97, 358237, 358302, H04N 584, H04N 912, H04N 1387

Patent

active

045801673

ABSTRACT:
A device for producing photographs of controlled contrast wherein a negative to be copied is evenly illuminated by a light source, the image thereof is directed by an optical member to an image detecting and conversion unit which produces a "non-sharp mask" of said negative under control of a respective control unit. Both, the "non-sharp mask" of the image and the image of the negative are directed into an image plane where they are superimposed and exposed upon a photo sensitive material.

REFERENCES:
patent: 3567852 (1968-03-01), Ett
patent: 3576945 (1971-05-01), Ebeling
patent: 4170025 (1979-10-01), Benkley
patent: 4204229 (1980-05-01), Heuze

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