Photographic reversal composition and method of use

Details Photographic reversal composition and method of use Photographic reversal composition and method of use

1999-08-13

2000-06-13

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Positive

430379, G03C 7407

Patent

active

060748052

ABSTRACT:
Color reversal photographic films are processed using a reversal solution comprising stannous ion and a quaternary ammonium compound as the sole biocide, to reduce formation of biogrowth. The quaternary ammonium compound is present at very low concentrations of 1 to 20 ppm, and is preferably myristyltrimethyl ammonium bromide because it avoids precipitates with components that leach out of processed films.

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patent: 5736302 (1998-04-01), Buongiorne et al.
patent: 5811225 (1998-09-01), McGuckin et al.

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