Film-width and transmittance scanner system

Details Film-width and transmittance scanner system Film-width and transmittance scanner system

1984-11-16

1986-08-05

Perkey, William B.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356443, 356383, 356386, 250560, 250571, G03D 1300, G01N 2184, G01B 1104

Patent

active

046039562

ABSTRACT:
A replenishment control system for a graphic arts continuous-tone film processor includes a scanner which scans a light spot across the film transport path and a sensor bar for receiving the light spot. The output of the sensor bar is periodically sampled during each scan of the light spot to produce a plurality of sample values for scan. Each sample value is then converted to a density value, and the density values are summed to produce an integrated density. Replenishment control signals for developer and fix replenishment are produced as a function of the integrated density.

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