Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1986-08-01
1987-09-15
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430567, 430568, G03C 140, G03C 726
Patent
active
046939644
ABSTRACT:
Moderate camera speed photographic elements for producing subtractive primary dye images are disclosed, including one emulsion layer comprised of silver bromide or bromoiodide grains having a mean diameter in the range of from 0.4 to 0.55 .mu.m including tubular grains having an aspect ratio of greater than 8:1 accounting for at least 50 percent of the total projected area of the grains in the emulsion layer and being positioned to receive imaging radiation prior to one or more emulsion layers sensitized to the red or green portion of the spectrum. Enhancement of speed-granularity relationships, blue to minus blue speed separation, silver utilization, and image sharpness can all be realized.
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Allowed U.S. application Ser. No. 891,804, Daubendiek et al, filed 8/1/86.
Berry, "Turbidity of Monodisperse Suspensions of AgBr", Journal of the Optical Society of America, vol. 52, No. 8, Aug., 1962, pp. 888-895.
Research Disclosure, vol. 225, Jan. 1983, Item 22534, pp. 20-58, "Sensitized High Aspect Ratio Silver Halide Emulsions and Photographic Elements".
Research Disclosure, vol. 253, May 1985, Item 25330, pp. 237-240, "Correlating Optical Properties and Tabular Grain Thicknesses to Optimize Photographic Performance".
Daubendiek Richard L.
Gersey Timothy R.
House Gary L.
Eastman Kodak Company
Schilling Richard L.
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