Bis-azo pyrazolone type dye developer and light-sensitive materi

Details Bis-azo pyrazolone type dye developer and light-sensitive materi Bis-azo pyrazolone type dye developer and light-sensitive materi

1975-02-10

1976-09-28

Klein, David

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 3, 96290, 96 77, 96 99, G03C 176, G03C 140, G03C 700, G03C 110

Patent

active

039829464

ABSTRACT:
A dye developer represented by the following general formula (I): ##EQU1## WHEREIN X represents the atoms necessary for completing a monocyclic or polycyclic aromatic group; Y represents an acyl group having 1 to 4 carbon atoms; Ar and Z each represents a monocyclic polycyclic aromatic group, with Ar being connected either directly or through a divalent atom or group to a polyhydric phenol moiety having a silver halide developing action; R represents an alkyl group or an alkoxy group; n represents an integer of 0 to 4; and Q represents ##EQU2## wherein Z' represents a hydrogen atom or an alkyl group, R.sub.2 and R.sub.3 each represents a hydrogen atom or an aliphatic group, or R.sub.2 and R.sub.3 can combine to form a divalent aliphatic group and a light-sensitive material comprising a support having thereon a light-sensitive silver halide emulsion layer with the dye developer of this invention associated therewith.

REFERENCES:
patent: 3183090 (1965-05-01), Jarrett
patent: 3236643 (1966-02-01), Husek
patent: 3307947 (1967-03-01), Idelson et al.
patent: 3424742 (1969-01-01), Jarrett

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