Silver bromoiodide core-shell grain emulsion

Details Silver bromoiodide core-shell grain emulsion Silver bromoiodide core-shell grain emulsion

1995-03-07

1996-11-19

Baxter, Janet C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

G03C 1035

Patent

active

055761690

ABSTRACT:
A core-shell silver bromoiodide emulsion having an inner core portion consisting essentially of silver bromoiodide and an outer shell portion consisting essentially of silver bromoiodide, wherein said inner core portion has a silver iodide content ranging from 30 to 50 mol %, said outer shell portion has a silver iodide content ranging from 1 to 10 mol %, and the average total silver iodide content ranges from 5 to 12 mol %, and wherein the ratio between the area of the X-ray diffraction peak corresponding to said outer shell portion and the area of the X-ray diffraction peak corresponding to said inner core portion is higher than 9:1.

REFERENCES:
patent: 4477564 (1984-10-01), Cellone et al.
patent: 4668614 (1987-05-01), Takada et al.
patent: 4728602 (1988-03-01), Shibahara et al.
patent: 5266456 (1993-11-01), Mihayashi et al.
patent: 5284740 (1994-02-01), Mihayashi et al.
patent: 5420002 (1995-05-01), Takada et al.
"Photographic Emulsion Grains with Cores," by H. Hirsch, Research Laboratories, Kodak Limited, Wealdstone, Harrow, Middlesex, J Photographic Science, vol. 10, pp. 129-146, 1962.

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