Method of photographing on microfilm and apparatus therefor

Details Method of photographing on microfilm and apparatus therefor Method of photographing on microfilm and apparatus therefor

1989-04-06

1990-10-30

Hix, L. T.

Photocopying

Projection printing and copying cameras

Identifying, composing, or selecting

355 41, 355 54, G03B 2752

Patent

active

049672282

ABSTRACT:
A method and apparatus for additionally photographing information for retrieval during the photographing of an original image on a microfilm is disclosed. A slit light from a light source is projected on the microfilm while the microfilm is being transported. The length of the information for retrieval to be additionally photographed on the microfilm can be freely set by controlling the period of the projection of the light on the microfilm. One displaying device is adapted to project light in the pattern of one numeral on the microfilm while the microfilm is at rest.

REFERENCES:
patent: 3827802 (1974-08-01), Pfeifer et al.
patent: 4701046 (1987-10-01), Shiga
patent: 4803505 (1989-02-01), Saijo et al.

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