Silver halide emulsion containing two equivalent type coupler fo

Details Silver halide emulsion containing two equivalent type coupler fo Silver halide emulsion containing two equivalent type coupler fo

1978-01-26

1979-02-06

Brown, J. Travis

Gas separation: apparatus

Electric field separation apparatus

Collecting electrode details

96 9, 96 55, 96 77, G03C 140

Patent

active

041382641

ABSTRACT:
A novel two-equivalent naphthol or phenol type cyan coupler is disclosed wherein the active position thereof has a split-off group which contains a bonding group of the formula ##STR1## wherein R is hydrogen atom or a divalent organic group. The present coupler is incorporated into a photographic material containing a photosensitive emulsion layer.

REFERENCES:
patent: 3432521 (1969-03-01), Loria
patent: 3447928 (1969-06-01), Loria

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