Silver halide photographic material comprising a specified nucle

Details Silver halide photographic material comprising a specified nucle Silver halide photographic material comprising a specified nucle

1987-11-06

1989-10-31

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430410, 430600, 430940, G03C 148, G03C 106

Patent

active

048777234

ABSTRACT:
A silver halide photographic material which comprises a support having provided thereon at least one photosensitive silver halide photographic emulsion layer, wherein the emulsion layer or at least one of the other hydrophilic colloid layers contains at least one of alkynyl-substituted heterocyclic quaternary ammonium salts represented by the formula: ##STR1## wherein Z represents a group of non-metallic atoms required to form a 5- to 6-membered heterocyclic ring, R.sup.1 represents an aliphatic group, R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, each represents a hydrogen atom, an aliphatic group, or an aromatic group, at least one of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and Z has at least one substituent having an alkynyl group, Y represents a counter ion for the charge balance, and n is a number required for charge balance.

REFERENCES:
patent: 4115122 (1978-09-01), Adachi et al.
patent: 4471044 (1984-09-01), Parton et al.

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