High-contrast photographic elements with improved print-out capability
AssigneeEastman Kodak Company
InventorsAnthony D. Gingello, Ronald J. Schmidt, Richard J. Kapusniak
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Abstract
A high-contrast room-light-handleable black-and-white silver halide photographic element that is especially useful in the field of graphic arts is comprised of a support, an imaging layer containing doped silver halide grains with a mean grain size of less than 0.12 micrometers, and a print-out layer containing doped silver halide grains with a mean grain size in the range of from 0.14 to 0.4 micrometers. The element utilizes very slow speed emulsions which render it capable of being handled in room light and is able to print-out a visible image on normal exposure and develop to full density upon being processed in conventional developing solutions.
Claims14
A high-contrast room-light-handleable black-and-white silver halide photographic element;
- said element comprising:
- (1) a support,
- (2) an imaging layer containing doped silver halide grains with a mean grain size of less than 0.12 micrometers, and
- (3) a print-out layer containing doped silver halide grains with a mean grain size of from 0.14 to 0.4 micrometers;
- the dopant level of the silver halide grains of said imaging layer and the dopant level of the silver halide grains of said print-out layer being such that the photographic speed of said imaging layer is higher than the photographic speed of said print-out layer.
A high-contrast room-light-handleable black-and-white silver halide photographic element;
- said element comprising:
- (1) a poly(ethylene terephthalate) film support;
- (2) an imaging layer containing silver chloride grains with a mean grain size of 0.07 to 0.09 micrometers doped with 0.13 millimoles of ruthenium per mole of silver chloride;
- and
- (3) a print-out layer containing silver chloride grains with a mean grain size of 0.15 to 0.20 micrometers doped with 0.13 millimoles of ruthenium per mole of silver chloride.
Dependencies are inferred from the claim text.