Spectrally sensitized inner latent image type silver halide phot

Details Spectrally sensitized inner latent image type silver halide phot Spectrally sensitized inner latent image type silver halide phot

1983-10-27

1986-02-18

Louie, Won H.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430574, 430409, 430940, 430598, G03C 102, G03C 108

Patent

active

045713804

ABSTRACT:
An inner latent image type silver halide photographic emulsion which is spectrally sensitized by adding at least one cyanine dye represented by general formula (II) to a direct positive inner latent image type silver halide photographic emulsion and thereafter adding additionally at least one cyanine dye represented by general formula (I) to said emulsion ##STR1## (the symbols are as defined in the appended claims). A remarkable increase of spectral sensitivity, an increase of maximum density and a decrease of minimum density can be obtained by this silver halide photographic emulsion.

REFERENCES:
patent: 3580724 (1971-05-01), Sato et al.
patent: 3772030 (1973-11-01), Gilman et al.
patent: 4040839 (1977-08-01), Matsuyama et al.
patent: 4362813 (1982-12-01), Mihara et al.

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