Processor chemistry control strip reader and replenishment syste

Details Processor chemistry control strip reader and replenishment syste Processor chemistry control strip reader and replenishment syste

1989-05-31

1991-01-15

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Including control feature responsive to a test or measurement

430398, 430399, 354 20, 354298, G03C 526, G03D 300, G03D 1300

Patent

active

049853201

ABSTRACT:
A voltage set point system is employed to provide a constant illumination of a photographic test strip. The set voltage is used as the supply for a voltage divider comparator network for accurately determining exposed film density levels.

REFERENCES:
patent: 3623418 (1971-11-01), Ost
patent: 4081280 (1978-03-01), Corluy et al.
patent: 4464036 (1984-08-01), Taniguchi
patent: 4642276 (1987-02-01), Burtin

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