Method and apparatus for coding photographic materials

Details Method and apparatus for coding photographic materials Method and apparatus for coding photographic materials

1987-10-07

1988-11-08

Gellner, Michael L.

354275, G03B 724

Patent

active

047836725

ABSTRACT:
A system for coding photographic materials is provided wherein a code pattern disposed on a cassette containing photosensitive material is read by an optical code reading unit associated with a photographic apparatus adapted to receive the cassette. Preferably, a grey reference patch is provided and the code is a tertiary code defined by black, white and grey printed patches. The type of photosensitive material contained in the cassette is identified from the tertiary code and appropriate exposure and/or development settings can be made by the photographic apparatus. The absence of a recognizable code pattern indicates use of an authorized supply material.

REFERENCES:
patent: 4248512 (1981-02-01), Robbins
1983 Eastman Kodak "Tech Bits", pp. 5-6.

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