Direct positive color photographic materials

Details Direct positive color photographic materials Direct positive color photographic materials

1988-10-11

1991-10-01

Stoll, Robert L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430410, 430598, 430596, G03C 108

Patent

active

H00009725

ABSTRACT:
A direct positive color photosensitive material comprising an internal latent image silver halide emulsion layer which has not been prefogged, a color image-forming magenta coupler of formula (I) and a nucleation accelerator of formulae (II) and/or (III): ##STR1## wherein Za and Zb represent a ##STR2## group, R.sup.1 and R.sup.2 represent a hydrogen atom or a substituent group, X represents a hydrogen atom or a group which can be eliminated by a coupling reaction, and R.sup.1, R.sup.2 or X may form dimers or larger polymers; ##STR3## wherein Q represents a group of atoms required to form a 5- or 6-membered heterocyclic ring, Y represents a dilvalent linking group containing at least one atom selected from hydrogen, carbon, nitrogen, oxygen and sulfur, and R represents an organic group which contains at least one thioether group, amino group, ammonium group, ether group or heterocyclic group, n represents 0 or 1 and m represents 0, 1 or 2, and M represents a hydrogen atom, an alkali metal atom, an ammonium group or a group which is cleaved under alkaline conditions; ##STR4## wherein Q' represents a group of atoms required to form a 5- or 6-membered heterocyclic ring which can form imino silver, Y, R, n and M are the same as for general formula (I) and m' represents 1 or 2.

REFERENCES:
patent: 4481285 (1984-11-01), Takagi et al.
patent: 4540654 (1985-09-01), Sato et al.
patent: 4704350 (1987-11-01), Morigaki et al.
patent: 4789627 (1988-12-01), Inoue et al.

Affiliated with

Also associated with

Rating

Direct positive color photographic materials does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Direct positive color photographic materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct positive color photographic materials will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1745144