Photographic element containing an azopyrazolone masking coupler

Details Photographic element containing an azopyrazolone masking coupler Photographic element containing an azopyrazolone masking coupler

1996-01-25

1997-06-24

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Color correcting

430362, 430382, 430386, 430387, 430544, 430549, 430555, 430557, 430558, 430563, G03C 7305, G03C 7333, G03C 738, G03C 7384

Patent

active

056416130

ABSTRACT:
The invention provides a photographic element comprising a support bearing a light-sensitive photographic silver halide layer containing (1) a bicyclic azole coupler (2) an azopyrazolone masking coupler and (3) a low impact development inhibitor releasing (LIDIR) coupler having at least one hydrogen atom at the coupling site and which does not substantially reduce contrast in the layer in which it is coated.

REFERENCES:
patent: 4777123 (1988-10-01), Yamada et al.
patent: 4977072 (1990-12-01), Renner et al.
patent: 5219719 (1993-06-01), Kida
patent: 5270156 (1993-12-01), Hirabayashi et al.

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