Doping of silver halide emulsions with group VIB compounds to fo

Details Doping of silver halide emulsions with group VIB compounds to fo Doping of silver halide emulsions with group VIB compounds to fo

1991-08-07

1992-11-24

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430567, 430603, 430608, G03C 1005

Patent

active

051660458

ABSTRACT:
The incorporation of dopant during the precipitation of silver halide grains. The silver halide grains are formed by a double jet, accelerated flow technique. After addition of about 65 to 90% of the silver halide mass to be precipitated, a dopant solution of an Group VIB salt in an amount of between about 0.2 and about 1.0 mg salt per mole of silver is added to the precipitation dispersion. The dispersion formation is then allowed to complete by continuing the double jet precipitation technique until a desired grain size is reached. Grains formed by this process will have their outer third comprising the Group VI metal salt with the silver halide. In the preferred method the Group VIB metal salt added is a selenium salt comprising potassium selenocyanate.

REFERENCES:
patent: 1602591 (1926-10-01), Sheppard
patent: 1939232 (1933-12-01), Sheppard et al.
patent: 3021212 (1962-02-01), King
patent: 3297446 (1967-01-01), Dunn
patent: 3297447 (1967-01-01), McVeigh
patent: 3320069 (1967-05-01), Illingsworth
patent: 3408196 (1968-10-01), McVeigh et al.
patent: 3442653 (1969-05-01), Dunn et al.
patent: 3619188 (1971-11-01), Alcock et al.
patent: 3772031 (1973-11-01), Berry et al.
patent: 4433048 (1984-02-01), Solberg et al.
patent: 4439520 (1984-03-01), Kofron et al.

Affiliated with

Also associated with

Rating

Doping of silver halide emulsions with group VIB compounds to fo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Doping of silver halide emulsions with group VIB compounds to fo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Doping of silver halide emulsions with group VIB compounds to fo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-921145