Tablet-shaped processing agent and method for processing silver

Details Tablet-shaped processing agent and method for processing silver Tablet-shaped processing agent and method for processing silver

1993-11-09

1994-11-22

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Regenerating image processing composition

Bleach-fix

430393, 430430, 430450, 430458, 430461, G03C 538, G03C 700, G03C 544, G03C 518

Patent

active

053668537

ABSTRACT:
A tablet-shaped bleaching agent for preparing a bleaching solution for color silver halide photographic materials is disclosed, along with the method of making it, the method of using it to prepare a bleaching solution, and the method of processing a color silver halide photographic material using a replenishing solution made from the tablet as a bleaching solution. The tablet has a bulk density of 1.00 to 3.00 g/cm.sup.3, and a total ammonium content of no more that 50 mol % of the total cation content in the tablet. The tablet comprises a ferric complex salt of a compound represented by Formula (L) and an organic polyacid according to Formula (C). In Formula (L), A.sub.1-4 each represent --CH.sub.2 OH, --COOM, or --PO.sub.3 M.sub.1 M.sub.2, and X represents a substituted or unsubstituted alkylene group of 3-6 carbon atoms. In Formula (C), A.sub.5 represents an organic group, and n is an integer of not less than 2. ##STR1## Formula (C) A.sub.5 --(COOM).sub.n

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