Developer for silver halide photographic light-sensitive materia

Details Developer for silver halide photographic light-sensitive materia Developer for silver halide photographic light-sensitive materia

1994-03-23

1994-11-15

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

Developer

430464, 430480, 430490, 430481, G03C 5305

Patent

active

053647467

ABSTRACT:
A developer for developing a silver halide photographic material is disclosed. The developer comprises a compound represented by Formula 1 or Formula 2; ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are each a hydrogen atom or an alkyl group having 1 to 3 carbon atoms provided that both of R.sub.1 and R.sub.2 are not hydrogen atoms at the same time; R.sub.5 is a hydroxy group, an amino group or an alkyl group having 1 to 3 carbon atoms; R.sub.6 and R.sub.7 are each a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an acyl group having 1 to 18 carbon atoms or a --COOM.sub.2 group, provided that both of R.sub.1 and R.sub.2 are not hydrogen atoms at the same time, in the above M.sub.1 is a hydrogen atom, an alkali metal atom or an ammonium group; m is an integer 0, 1 or 2; and M.sub.2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkali metal atom, an aryl group or an aralkyl group having not more than 15 carbon atoms. Formation of silver sludge in the developer is prevented.

REFERENCES:
patent: 3628955 (1971-12-01), Haist et al.
patent: 4141734 (1979-02-01), Lenoir et al.
patent: 4254215 (1981-03-01), Kramp et al.

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