Internally doped silver halide emulsions and processes for their

Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

430569, 430604, 430605, G03C 108

Patent

active

053607120

ABSTRACT:
A process is disclosed of preparing a radiation sensitive silver halide emulsion comprising reacting silver and halide ions in a dispersing medium in the presence of a metal hexacoordination or tetracoordination complex having at least one organic ligand containing a least one carbon-to-carbon bond, at least one carbon-to-hydrogen bond, or at least one carbon-to-nitrogen-to-hydrogen bond sequence and at least half of the metal coordination sites occupied by halide or pseudohalide ligands. The metal forming the complex is chosen from periods 4, 5 and 6 and groups 3 to 13 inclusive of the periodic table of elements. The incorporation of the transition metal ion dopant and at least one organic ligand into the cubic crystal lattice of the silver halide grains can be used to improve photographic performance.

REFERENCES:
patent: 3672901 (1972-06-01), Ohkubo et al.
patent: 3790390 (1974-02-01), Shiba et al.
patent: 3890154 (1975-06-01), Ohkubo et al.
patent: 3901711 (1975-08-01), Iwaosa et al.
patent: 4092171 (1978-05-01), Bigelow
patent: 4173483 (1979-11-01), Habu et al.
patent: 4835093 (1989-05-01), Janusonis et al.
patent: 4847191 (1989-07-01), Grzeskowiak
patent: 4933272 (1990-06-01), McDugle et al.
patent: 4937180 (1990-01-01), Marchetti et al.
patent: 4945035 (1990-07-01), Keevert, Jr. et al.
patent: 4981781 (1991-01-01), McDugle et al.
patent: 5037732 (1991-08-01), McDugle et al.
patent: 5132203 (1992-07-01), Bell et al.
patent: 5268264 (1993-12-01), Marchetti et al.
Research Disclosure, vol. 176, Dec. 1978, Item 17643, Section I, subsection A.
Research Disclosure, vol. 308, Dec. 1989, Item 308119, Section, I, subsection D.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Internally doped silver halide emulsions and processes for their does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Internally doped silver halide emulsions and processes for their, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Internally doped silver halide emulsions and processes for their will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1802005

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.