Light-absorbing dyes for silver halide material

Details Light-absorbing dyes for silver halide material Light-absorbing dyes for silver halide material

1976-12-17

1978-05-30

Welsh, John D.

Gas separation: apparatus

Electric field separation apparatus

Electrode retaining or supporting means

96126, 252300, G03C 184

Patent

active

040921689

ABSTRACT:
Novel antihalation layer(s) for use in a light-sensitive silver halide element and comprising a 5-pyrazolone-monomethine oxonol of formula I and a 5-pyrazolone-pentamethine oxonol of formula II : ##STR1## wherein: EACH OF R.sup.1 and R.sup.3 represents an alkyl group or an aryl group,

REFERENCES:
patent: 3502474 (1970-03-01), Tsuda et al.
patent: 3647460 (1972-03-01), Hofman
patent: 3652280 (1972-03-01), De Belder et al.
patent: 3847621 (1974-11-01), Nishina et al.

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