Photographic film

Details Photographic film Photographic film

1995-03-30

1996-05-21

Adams, Russell E.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Structurally defined

430501, 352241, G03C 100, G03C 302, G03C 176

Patent

active

055188699

ABSTRACT:
The present invention is to improve the visibility of a cutting position of a developed reversal film, and in the invention perforations are provided in upper and lower sides of a photographic film at the same pitch as that of the photographic area of a camera. A V-shaped groove is provided in the perforation at a longitudinally central position. The V-shaped grooves in the upper and lower perforations serve as an accurate target for cutting by taking photos with a camera designed such that the perforations are situated at gap portions G between photographic areas or frames.

REFERENCES:
patent: 2527765 (1950-10-01), Roehrl
patent: 4295713 (1981-10-01), Edwards
patent: 4340663 (1982-07-01), Mikawa et al.
patent: 5338650 (1994-08-01), Iwagaki

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