Photographic photosensitive solution manufacturing method and ap

Details Photographic photosensitive solution manufacturing method and ap Photographic photosensitive solution manufacturing method and ap

1990-10-18

1992-11-24

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Including control feature responsive to a test or measurement

430569, G03C 1015

Patent

active

051660156

ABSTRACT:
A method and apparatus for manufacturing photographic photosensitive solultion to produce crystals of silver halide emulsion having a uniform size and shape and without substantial waste of expensive Ag.sup.+ solution. Flow control valves for controlling the flow rates of Ag.sup.+ and X.sup.- solutions are controlled according to a predetermined flow rate or pAg potential program and using output signals of respective flow meters or a pAg potentiometer. The flow control valves are motor-controlled flow control valves for which the rate of change of flow rate with valve stroke is small and linear.

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patent: 3990048 (1976-12-01), Parthemore
patent: 4026668 (1977-05-01), Culhane et al.
patent: 4147551 (1979-04-01), Finnicum et al.
patent: 4157289 (1979-06-01), Ikenoue et al.
patent: 4976404 (1990-12-01), Ichikawa et al.

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