Photographic bleach regenerator composition formulated with brom

Details Photographic bleach regenerator composition formulated with brom Photographic bleach regenerator composition formulated with brom

1997-11-19

1998-11-10

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Bleaching

430393, 430398, 430400, 430461, G03C 744

Patent

active

058341706

ABSTRACT:
A ferric-EDTA bleach regenerator composition can be made with bleach overflow to provide a bleach replenisher for reversal color silver halide photographic processes. The bleach regenerator composition has a critically controlled pH between about 6.0 and about 6.5, and comprises a total bromide ion concentration of at least about 210 g/l, and ferric ion in an amount of at least about 50 g/l. At least 50% of the bleach overflow and the bleach regenerator composition are mixed in at least a 1:1 volume ratio. After pH adjustment to from about 5.4 to about 5.6, the pH adjusted replenisher is supplied to the bleach tank for use in the process.

REFERENCES:
patent: 4232118 (1980-11-01), Okauchi et al.
patent: 4822725 (1989-04-01), Abe et al.
patent: 4923785 (1990-05-01), Frank
patent: 5002860 (1991-03-01), Ishikawa et al.
patent: 5002861 (1991-03-01), Nakazyo et al.
patent: 5011763 (1991-04-01), Morimoto et al.
patent: 5055382 (1991-10-01), Long et al.
patent: 5114835 (1992-05-01), Sakanoue
patent: 5270148 (1993-12-01), Morigaki et al.
patent: 5342740 (1994-08-01), Goto et al.
patent: 5352567 (1994-10-01), Okada et al.
patent: 5449593 (1995-09-01), Morigaki et al.

Affiliated with

Also associated with

Rating

Photographic bleach regenerator composition formulated with brom does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photographic bleach regenerator composition formulated with brom, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photographic bleach regenerator composition formulated with brom will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1515082