Photocopying – Contact printing – Light monitoring exposure control
Patent
1975-08-15
1977-08-30
Wintercorn, Richard A.
Photocopying
Contact printing
Light monitoring exposure control
355 88, G03B 2778
Patent
active
040451364
ABSTRACT:
A control unit for a photographic film printer for printing motion picture film onto raw stock from a master preprint film. The operation of various functions of the printer such as color changes, fades, and the like, are controlled in accordance with a control tape bearing information for the control of the various components. Various cue signals indicating where the desired controls are to be effective during the printing process are provided by a notch or RF patch system, a separate frame counting system utilizing a separate film address information tape, or an integral frame counting cuing system wherein the film address information is provided on the same control tape with the control information. Frame count cuing is achieved by counting frame numbers of the preprint film from a predetermined reference to thereby assign a position address to each film frame whereby the coincidents between the film address of the master frame and the frame address provided by the tape provides a command signal to release control data to the various printer controls. Logic means is provided to achieve printing and fading capabilities in both forward and reverse directions.
REFERENCES:
patent: 3476477 (1969-11-01), Balint et al.
patent: 3492071 (1970-01-01), Limnios et al.
patent: 3502409 (1970-03-01), Balint et al.
patent: 3519347 (1970-07-01), Bowker et al.
patent: 3533693 (1970-10-01), Balint
patent: 3586438 (1971-06-01), Gyori
patent: 3716299 (1973-02-01), Balint
patent: 3768001 (1973-10-01), Thorborg
patent: 3820002 (1974-06-01), Wildi
Langrehr Larry L.
Watson Charles J.
Bell & Howell Company
Fitz-Gerald Roger M.
Hoffman John R.
Schneider Robert J.
Wintercorn Richard A.
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