Image-forming layer containing silver halide emulsion and magent

Details Image-forming layer containing silver halide emulsion and magent Image-forming layer containing silver halide emulsion and magent

1976-04-21

1978-02-14

Brown, J. Travis

Gas separation: apparatus

Electric field separation apparatus

Collecting electrode details

96 565, G03C 140

Patent

active

040736512

ABSTRACT:
An image-forming layer containing silver halide emulsion and a magenta coupler represented by the general formula: ##STR1## wherein R.sub.1 represents an alkyl group having 10 to 18 carbon atoms, R.sub.2 represents hydrogen atom or an alkyl group having 1 to 4 carbon atoms, X represents a halogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, Y.sub.1 represents an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or a halogen atom, Y.sub.2 and Y.sub.3, which may be the same or different, represent hydrogen atoms or have the meaning assigned to Y.sub.1, and Z represents hydrogen atom or the atom or group which splits off by coupling.

REFERENCES:
patent: 3891445 (1975-06-01), Arai et al.
patent: 3935016 (1976-01-01), Nishimura et al.
patent: 3973979 (1976-08-01), Meier et al.

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