Photography – Fluid-treating apparatus – Having fluid-circulating means
Patent
1996-05-03
1998-01-27
Rutledge, D.
Photography
Fluid-treating apparatus
Having fluid-circulating means
G03D 302
Patent
active
057130582
ABSTRACT:
In conventional processing of photographic material, agitation of processing solution in a processing tank associated with a particular processing stage is achieved by withdrawing processing solution from and pumping the same solution back into the tank. It has been recognised that, especially for the fixing and washing stages, solution flow across the material surface has greater effect on diffusion rates of chemicals into and out of the photographic material when it occurs during the latter stages of the time that the material remains in a particular processing solution.
REFERENCES:
patent: 3192846 (1965-07-01), Wright
patent: 3344729 (1967-10-01), Kitrosser
patent: 3516345 (1970-06-01), Meyer
patent: 3610131 (1971-10-01), Frick et al.
patent: 3688677 (1972-09-01), Frick et al.
patent: 3774521 (1973-11-01), Beck
patent: 4359279 (1982-11-01), Popoff
patent: 4989028 (1991-01-01), Hall et al.
patent: 5055381 (1991-10-01), Abe et al.
patent: 5136323 (1992-08-01), Frank et al.
patent: 5172153 (1992-12-01), Frank et al.
patent: 5177522 (1993-01-01), Hayashi
patent: 5239327 (1993-08-01), Frank
patent: 5289224 (1994-02-01), Devaney, Jr. et al.
patent: 5298371 (1994-03-01), Nakamura
patent: 5380627 (1995-01-01), Grimsey
Photog, Sci. & Eng., vo. 19, Mar./Apr. 1975, A. Green, "Some Aspects of Fixing and Washing".
Eastman Kodak Company
Pincelli Frank
Rutledge D.
LandOfFree
Processing of photographic materials does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Processing of photographic materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Processing of photographic materials will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-350577