Process control for photographic processing apparatus

Details Process control for photographic processing apparatus Process control for photographic processing apparatus

1993-10-27

1996-01-02

Voeltz, Emanuel T.

Boots, shoes, and leggings

430 30, 354 3, G03C 500

Patent

active

054814804

ABSTRACT:
A method of controlling photographic processing apparatus when processing a given photographic material using the characteristic curve for that material, the characteristic curve being determined from a control strip of the photographic material, the control strip being produced exposing the control strip to a step wedge, and processing the exposed strip in the processing apparatus to be controlled, the characteristic curve being determined by measuring density values from the processed control strip in relation to the exposure applied to the strip in the step wedge, and plotting these density in relation to the exposure,
characterized in that the characteristic curve is defined by:

REFERENCES:
patent: 3462221 (1969-08-01), Tajima et al.
patent: 3995959 (1976-12-01), Shaber
patent: 4588298 (1986-05-01), Nakamura
patent: 5063583 (1991-11-01), Galkin
Woodlief Thomas, Jr., SPSE Handbook of Photographic Science and Engineering, 1973, pp. 767-768.

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