Photographic film printer

Details Photographic film printer Photographic film printer

1978-06-19

1979-05-15

Griffin, Donald A.

Photocopying

Contact printing

Plural exposure stations or plural machines

G03B 2708

Patent

active

041545281

ABSTRACT:
A modular photographic film printer utilizes a direct current servo controlled main drive motor and belt drive to move a master film and raw film stock across printing heads without the use of intermediate sprockets. Film tension is controlled by tension control motors connected to the pay out and take up reels of the printer. The unit is modular in construction, and circuitry is provided for monitoring critical functions of the printer in order to locate malfunctions. Fiber optics are utilized in the sound track printing head to provide cool operation.

REFERENCES:
patent: 1888910 (1932-11-01), DeForest
patent: 2044454 (1936-06-01), Wilson et al.
patent: 2118894 (1938-05-01), Morrissey
patent: 2134483 (1938-10-01), Killman et al.
patent: 2939362 (1960-06-01), Cole
patent: 3970386 (1976-07-01), Wohlrab

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