Development processing method

Details Development processing method Development processing method

1997-12-19

1999-11-02

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430440, 430446, 430488, G03C 529

Patent

active

059767588

ABSTRACT:
A development processing method which comprises the steps of: imagewise exposing a silver halide photographic light-sensitive material; and developing the exposed photographic material with a developing solution, wherein the silver halide photographic material comprises a support having thereon at least one light-sensitive silver halide emulsion layer, at least one of the silver halide emulsion layer and other hydrophilic colloidal layers containing at least one hydrazine derivative; and wherein the developing solution is substantially free from a dihydroxybenzene compound, has a pH of from 9.0 to 10.5 and contains (1) at least one ascorbic acid developing agent, (2) at least one 1-phenyl-3-pyrazolidone auxiliary developing agent and (3) a compound represented by the following formula (I): ##STR1## wherein R.sub.1 to R.sub.4 may be the same or different and each represents a hydrogen atom, a halogen atom or a substituent group bonded to the ring in formula (I) by a carbon atom, a nitrogen atom, an oxygen atom, a sulfur atom or a phosphorus atom, with the proviso that neither R.sub.1 nor R.sub.3 represents a hydroxyl group and that at least one of R.sub.1 to R.sub.4 is an --SM group, wherein M represents a hydrogen, atom, an alkali metal atom or an ammonium group.

REFERENCES:
patent: 5264323 (1993-11-01), Purol et al.
patent: 5618661 (1997-04-01), Sampei
patent: 5804358 (1998-09-01), Kamatsu et al.

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