Process for producing microfilm copies and apparatus therefor

Details Process for producing microfilm copies and apparatus therefor Process for producing microfilm copies and apparatus therefor

1976-06-07

1978-02-28

Griffin, Donald

Photocopying

Projection printing and copying cameras

With developing

G03B 2900

Patent

active

040764125

ABSTRACT:
Process for producing microfilm copies and apparatus therefor employing silver halide emulsion film which is provided in roll form, wherein subsequent to exposure of the frames of the image-carrier portion the film is advanced a set length without being exposed this unexposed portion constituting the tab portion of the succeeding microfilm unit, and then the exposed image-carrier portion of the film, also preceded by a tab portion, is detached by cutter means from the remainder of the film and processed independently in the same apparatus, and moved to the exterior of the apparatus. An identification code may be written manually on the tab portion of each microfilm unit or may be produced automatically thereon by supplementary film exposure means upon exposure of the first frame of the image-carrier portion of each microfilm unit.

REFERENCES:
patent: 2751814 (1956-06-01), Limberger
patent: 2881658 (1959-04-01), Bornemann
patent: 3240115 (1966-03-01), Robbins et al.
patent: 3259037 (1966-07-01), Wilkinson
patent: 3289530 (1966-12-01), Samain
patent: 3783763 (1974-01-01), Whitley et al.

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