Method for replenishing an ascorbic acid developer

Details Method for replenishing an ascorbic acid developer Method for replenishing an ascorbic acid developer

1997-10-08

1999-02-09

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Regenerating image processing composition

Developer

430398, G03C 531

Patent

active

058692231

ABSTRACT:
The present invention concerns a method of replenishing an ascorbic acid developer used for developing silver halide photographic products.
The method of the invention comprises the treatment of the developer by means of a resin having a greater selectivity for bromide ions than for carbonate ions and the replenishment of this developer by means of a solution, the concentration of the main components of which is predetermined in accordance with the quantity of developed silver.
This invention simplifies the replenishment of ascorbic acid developers.

REFERENCES:
patent: 3253920 (1966-05-01), Rees et al.
patent: 4228234 (1980-10-01), Okutsu et al.
patent: 4606827 (1986-08-01), Ernstson et al.
patent: 4680123 (1987-07-01), Wernicke et al.
patent: 5457214 (1995-10-01), O'Donnell
patent: 5491048 (1996-02-01), Anderson et al.
United States application Serial No. 08/915,521 filed on Aug. 1997.

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