Internal latent image silver halide emulsion containing a hetero

Details Internal latent image silver halide emulsion containing a hetero Internal latent image silver halide emulsion containing a hetero

1976-12-09

1978-09-19

Louie, Jr., Won H.

Gas separation: apparatus

Electric field separation apparatus

Plural diverse electric fields

96 95, 96107, G03C 148, G03C 106

Patent

active

041151224

ABSTRACT:
A direct positive silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer of the internal latent image type and being capable of forming a direct positive image, in which at least one hydrophilic colloid layer contains at least one heterocyclic quaternary salt compound represented by the following general formula (I) ##STR1## wherein Z represents an atomic group necessary for forming a 5- or 6-membered heterocyclic nucleus, R.sub.1 represents an aliphatic group, R.sub.2 represents a hydrogen atom or an aliphatic group, R.sub.3 and R.sub.4, which may be the same or different, each represents a hydrogen atom, a halogen atom, an aliphatic group, an alkoxy group, a hydroxy group or an aromatic group, and at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents a propargyl group, a butynyl group or a substituent containing a propargyl or butynyl group, X.crclbar. represents an anion, n is 1 or 2, with n being 1 in the case that the compound forms an inner salt; in such an amount as to exert a fogging effect on the silver halide emulsion of the internal latent image type.

REFERENCES:
patent: 3615615 (1971-10-01), Lincoln et al.
patent: 3734738 (1973-05-01), Kurtz et al.
patent: 3764339 (1973-10-01), Himmelmann et al.
patent: 3910791 (1975-10-01), VON Konig
patent: 3954478 (1976-05-01), Arai et al.

Affiliated with

Also associated with

Rating

Internal latent image silver halide emulsion containing a hetero does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Internal latent image silver halide emulsion containing a hetero, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Internal latent image silver halide emulsion containing a hetero will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2116911