EP 0772085 B1 20000126 - Bleach regenerator composition and its use to process reversal color photographic elements
Title (en)
Bleach regenerator composition and its use to process reversal color photographic elements
Title (de)
Bleich-Auffrischerzusammensetzung und deren Verwendung zur Behandlung von farbfotografischen Umkehrelementen
Title (fr)
Composition régénénatrice de blanchiment et son utilisation pour le traitement d'éléments photographiques couleur inversibles
Publication
Application
Priority
- US 815995 P 19951031
- US 58803396 A 19960117
Abstract (en)
[origin: EP0772085A2] A ferric-EDTA bleach regenerator composition can be mixed 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 6.0 and 6.5, and comprises a total bromide ion concentration of at least 210 g/l, and ferric ion in an amount of at least 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 5.4 to 5.6, the pH adjusted replenisher is supplied to the bleach tank for use in the process.
IPC 1-7
IPC 8 full level
G03C 5/50 (2006.01); G03C 7/00 (2006.01); G03C 7/44 (2006.01)
CPC (source: EP)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0772085 A2 19970507; EP 0772085 A3 19970521; EP 0772085 B1 20000126; DE 69606377 D1 20000302; DE 69606377 T2 20000824; JP H09166855 A 19970624
DOCDB simple family (application)
EP 96202980 A 19961025; DE 69606377 T 19961025; JP 28840796 A 19961030