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Primary Examiner: Britton, Howard W.
Assistant Examiner: Masinick, Michael A.
Attorney: Rummler & Snow

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Title: Method and apparatus for improving photomechanical reproduction by contrast decrease

Abstract: A method and apparatus for reproducing black and white and color copy having improved contrast of highlight and shadow areas of the copy by recording an optically-produced main image on a light-sensitive emulsion, directing the light emanating therefrom via television camera and electronically inverting the same and sending this signal through a video monitor having contrast and brightness control, and projecting the secondary negative image therefrom onto the light-sensitive emulsion in register with the main positive image.

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Inventors: Schumacher, Ernst E. (6 Frankfurt am Main, DT)

Application Number: 456605
Filing Date: 1974-04-01
Publication_date: 1976-01-20
Assignee:
Primary Class(es): 358/532 355/20, 355/43, 358/479, 358/510
Other Classes:
US Patent Ref:

2988978	Jun, 1961	Craig	355/70.
3297822	Jan, 1967	Braid	178/7.
3340360	Sep, 1967	Celio	178/6.
3415951	Dec, 1968	Heller	178/7.
3480365	Nov, 1969	Oove	355/77.
3576945	May, 1971	Ebeling	178/6.
3646262	Feb, 1972	Moe	178/6.
3673933	Jul, 1972	Hamann	355/43.
3715619	Feb, 1973	Cotter	178/6.
3746782	Jul, 1973	Driskell	178/6.
3758707	Sep, 1973	Keller	358/80.

Other Refs: Other References: Printing Color Negatives pp. 47-48, 1969, Eastman Kodak Company.