Title:
PROCESS FOR TREATING SILVER HALIDE PHOTOGRAPHIC METERIAL AND COMPOSITION THEREFOR
Document Type and Number:
WIPO Patent Application WO/1991/008517
Kind Code:
A1
Abstract:
A process for desilvering in the development of a photographic material and a composition used for this purpose, aiming at solving the problem encountered in using conventional fixers represented by thiosulfates and proposed substitutes therefor. The use of a mesoionic compound of general formula (I), as the fixer in the fixing or bleach-fix bath allows the treatment to be conducted with an excellent desilvering efficiency, thus giving a stable picture image. In color photography, the use of a bleach-fix bath containing a fixer comprising only a mesoionic compound of general formula (II), in an amount of 0.1 mol/l results in an extremely reduced bleaching fog.
Inventors:
KOJIMA TETSURO (JP)
WATANABE NOBUO (JP)
WATANABE NOBUO (JP)
Application Number:
PCT/JP1990/001574
Publication Date:
June 13, 1991
Filing Date:
December 04, 1990
Export Citation:
Assignee:
FUJI PHOTO FILM CO LTD (JP)
International Classes:
G03C5/38; G03C7/42; (IPC1-7): G03C7/42
Foreign References:
| JPH01201659A | 1989-08-14 | |||
| JPH0244355A | 1990-02-14 | |||
| JPH02139547A | 1990-05-29 | |||
| JPS62253161A | 1987-11-04 |
Other References:
See also references of EP 0496887A4
Attorney, Agent or Firm:
Hagino, Taira (Toranomon-Mitsui Bldg. 14th Floor 8-1,
Kasumigaseki 3-chom, Chiyoda-ku Tokyo 100, JP)
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