Back to results
US 5,932,401 AGranted
Reversal photographic elements comprising an additional layer containing an imaging emulsion and a non-imaging emulsion
AssigneeEastman Kodak Company
InventorKeath T. Chen
Life of this patent
Estimating the term…
Abstract
Silver halide photographic elements which are capable of producing reversal images are disclosed including a substantially non-image forming overcoat or intercoat layer comprising an image forming emulsion and a non-image forming emulsion. The combination of imaging emulsion and nonimaging emulsion in a substantially non-image forming overcoat or intercoat layer results in an increase in interlayer interimage effects.
Claims34
A photographic element capable of forming a reversal image comprising:
- a support and,
- coated on said support, at least one image recording emulsion layer comprised of a dispersing medium and radiation sensitive silver salt grains and at least one substantially non-image forming intercoat or overcoating layer comprising:
- 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 non-image forming silver salt emulsion having a grain size less than 0.15 .mu.m;
- wherein in the intercoat or overcoat layer the molar ratio of the grain population of the non-image forming emulsion to that of the light sensitive imaging emulsion is greater than 3:2 or the surface area ratio of the grains of the non-image forming emulsion to the grains of the light sensitive imaging emulsion is more than 2:1.
3 more elements
A multicolor photographic element capable of forming a dye image comprising:
- a support and,
- coated on said support, at least one image recording emulsion layer comprised of a dispersing medium and radiation sensitive silver halide grains and at least one substantially non-image forming overcoating layer comprising:
- a) a red light or green light or blue 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 non-image forming silver halide emulsion having grain size less than 0.15 .mu.m;
- wherein in the overcoat layer the molar ratio of the grain population of the non-image forming emulsion to that of the light-sensitive imaging emulsion is greater than 3:2 or the surface area ratio of the grains of the non-image forming emulsion to the grains of the light sensitive imaging emulsion is more than 2:1.
3 more elements
Dependencies are inferred from the claim text.