Method and apparatus for improving photomechanical reproduction

Details Method and apparatus for improving photomechanical reproduction Method and apparatus for improving photomechanical reproduction

1974-04-01

1976-01-20

Britton, Howard W.

Telegraphy

Systems

Simplex-reversing periodic

178DIG1, 178 67R, 355 20, 355 43, H04N 718

Patent

active

039340813

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.

REFERENCES:
patent: 2988978 (1961-06-01), Craig
patent: 3297822 (1967-01-01), Braid
patent: 3340360 (1967-09-01), Celio
patent: 3415951 (1968-12-01), Heller
patent: 3480365 (1969-11-01), Oove
patent: 3576945 (1971-05-01), Ebeling
patent: 3646262 (1972-02-01), Moe
patent: 3673933 (1972-07-01), Hamann
patent: 3715619 (1973-02-01), Cotter
patent: 3746782 (1973-07-01), Driskell
patent: 3758707 (1973-09-01), Keller
Printing Color Negatives pp. 47-48, 1969, Eastman Kodak Company.

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