Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1999-11-23
2000-12-19
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430506, 430509, 430407, 430379, 430523, 430539, 430568, G03C 146, G03C 1494, G03C 550, G03C 718, G03C 726
Patent
active
061625957
ABSTRACT:
Photographic elements capable of forming a reversal image are disclosed comprising a support and, coated on said support, at least one image recording emulsion layer comprised of a dispensing medium and radiation sensitive silver halide grains and at least one substantially non-image forming layer. In one embodiment, the substantially non-image forming layer comprises: a) a light sensitive silver halide imaging emulsion which is less than 10 percent of the mass of the total imaging emulsion in the element; b) a first non-image forming silver salt emulsion having an average grain size less than 0.15 .mu.m; and c) a second non-image forming silver salt emulsion comprising iodide having an average grain size greater than that of the first non-image forming emulsion. In a second embodiment, the substantially non-image forming layer comprises: a) a light sensitive silver halide imaging emulsion which is less than 10 percent of the mass of the total imaging emulsion in the element; and b) a polydisperse non-image forming silver salt emulsion comprising iodide and having an average grain size less than 0.15 .mu.m and a coefficient of variation of at least 50%. In the substantially non-image forming layer of the invention, the surface area ratio of the grains of the non-image forming emulsion(s) to the grains of the imaging emulsion is more than 2:1. The combination of the imaging and non-imaging emulsions in the special substantially non-image forming layer gives an increase in interlayer interimage effects, increasing the color of the film.
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Anderson Andrew J.
Eastman Kodak Company
Schilling Richard L.
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