Silver halide photographic material comprising hole-injection-ty

Details Silver halide photographic material comprising hole-injection-ty Silver halide photographic material comprising hole-injection-ty

1995-07-07

1998-12-22

Chea, Thorl

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430573, 430574, 430575, 430576, 430577, 430583, 430585, 430586, G03C 129, G03C 134

Patent

active

058517529

ABSTRACT:
Disclosed is a silver halide photographic material comprising a support having provided thereon at least one silver halide emulsion layer comprising a substantially surface-latent-image-type silver halide emulsion which comprises hole-injection-type sensitizing dye(s) in an amount of 4.times.10.sup.-4 mol or more per mol of silver in the emulsion and further comprises supersensitizing compound(s), wherein the hole-injection-type sensitizing dye and the supersensitizing compound satisfy the requirements defined herein. The photographic material, thus comprising at least one silver halide emulsion that has been spectrally sensitized with a large amount of sensitizing dyes in a wavelength range longer than 545 nm and has been further sensitized by reduction sensitization, has a much increased sensitivity, while being fogged poorly, and has excellent storage stability.

REFERENCES:
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patent: 4571380 (1986-02-01), Noguchi et al.
patent: 4960689 (1990-10-01), Nishikawa et al.
patent: 5384234 (1995-01-01), Ueda et al.
patent: 5436121 (1995-07-01), Suga et al.
patent: 5472839 (1995-12-01), Missfeldt
patent: 5476758 (1995-12-01), Suga et al.
A Novel Form of Chemical Sensitization . . . , T.A. Babcock et al., Photographic Sci. Eng., vol. 19(1), 49 (1975).
Spectral sensitization of mobile . . . , R.W. Berriman et al., Photographic Sci. Eng., vol. 17(2), pp. 235-243 (1973).

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