Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1989-02-08
1991-11-26
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430569, G03C 1035
Patent
active
050681737
ABSTRACT:
Photosensitive silver halide emulsions are disclosed which comprise photosensitives silver halide grains dispersed in a binder, wherein at least 70% of the total projected area of the silver halide grains is accounted for by tabular grains of a diameter of at least 0.15 .mu.m, wherein the mean aspect ratio of the tabular grains is not more than 8.0, wherein grains in which the value of the ratio (b/a) of the longest distance (a) between two or more parallel twinning planes in the tabular grain and the grain thickness (b) is at least 5 account for at least 50% (in terms of numbers of grains) of all of the tabular grains, and wherein at least 50% (in terms of the numbers of grains) of the tabular grains are grains in which the number of dislocations per grain is at least 10.
REFERENCES:
patent: 4614711 (1986-09-01), Sugimoto et al.
patent: 4713318 (1987-12-01), Sugimoto et al.
patent: 4853322 (1989-08-01), Makino et al.
Theory of the Photographic Process, T. H. James, ed., 4th edition, p. 20, Macmillan Publishing, 1977.
Convergent-Beam X-Ray Analysis of Mosaic Structure in Polycrystals, C. R. Berry, Journal of Applied Physics, vol. 27, No. 6, p. 636, 1956.
Ikeda Hideo
Takehara Hiroshi
Baxter Janet C.
Bowers Jr. Charles L.
Fumi Photo Film Co., Ltd.
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