Multicolor photographic element with a minus blue recording tabu

Details Multicolor photographic element with a minus blue recording tabu Multicolor photographic element with a minus blue recording tabu

1986-08-01

1987-06-09

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Two or more radiation-sensitive layers containing other than...

430506, 430567, 430568, G03C 140, G03C 727

Patent

active

046720278

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 0.2 to 0.55 .mu.m including tabular 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 blue recording emulsion layers. Enhancement of speed-granularity relationships, blue to minus blue speed separation, silver utilization, and image sharpness can all be realized.

REFERENCES:
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patent: 4478929 (1984-10-01), Jones et al.
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 Hibh 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".
Allowed U.S. application Ser. No. 06/891,803, Daubendiek et al, filed 8/1/86.

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