Ultrathin tabular grain emulsion

Details Ultrathin tabular grain emulsion Ultrathin tabular grain emulsion

1994-06-30

1995-11-28

Baxter, Janet C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

G03C 1035

Patent

active

054706980

ABSTRACT:
A radiation-sensitive emulsion is disclosed in which greater than 90 percent of total grain projected area is accounted for by high aspect ratio tabular grains, the halide content of which is primarily bromide, but with a speed enhancing amount of iodide also present. The tabular grains are ultrathin and exhibit low temperature stimulated fluorescence indicative of the iodide crystal lattice modifications produced by abrupt iodide introduction known to enhance photographic speed. Tabular grain structures are present having a central region accounting for at least 5 mole percent of total silver forming the tabular grain, an annular region laterally surrounding said central region and exhibiting a maximum iodide concentration, and a peripheral region laterally surrounding the annular region and accounting for greater than 25 percent of total silver forming the tabular grain.

REFERENCES:
patent: 4433048 (1984-02-01), Solberg et al.
patent: 4439520 (1984-03-01), Kofron et al.
patent: 4665012 (1987-05-01), Sugimoto et al.
patent: 5250403 (1993-10-01), Antoniades et al.
patent: 5314793 (1994-05-01), Chang et al.
Buhr et al., Research Disclosure, vol. 253, Item 25330, May 1985.

Affiliated with

Also associated with

Rating

Ultrathin tabular grain emulsion does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ultrathin tabular grain emulsion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrathin tabular grain emulsion will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2012625