Method for forming a photosensitive silver halide element
AssigneePolaroid Corporation
InventorsEdwin H. Land, Vivian K. Walworth
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Abstract
A fine-grain emulsion in a plurality of predetermined spaced depressions is coalesced to form, in situ, a plurality of single effective silver halide grains in a predetermined spaced array by the action of a solution of a silver halide solvent containing a dissolved silver salt.
Claims35
In a method for forming a photosensitive element comprising a plurality of single effective silver halide grains which method comprises coalescing a fine-grain silver halide emulsion in a plurality of predetermined spaced depressions in a surface, the improvement which comprises carrying out said coalescence with a solution of silver halide solvent containing a dissolved silver salt.
A method for forming a photosensitive element comprising a plurality of single effective silver halide grains in a predetermined spaced array which comprises the following steps in sequence:
- (a) depositing a fine-grain silver halide emulsion in a surface containing a plurality of predetermined spaced depressions;
- (b) applying a solution of silver halide solvent saturated with a silver salt in an amount sufficient to partially dissolve said grains in said depressions;
- said
- (c) coalescing said grains to a single effective silver halide grain in substantially each depression.
Dependencies are inferred from the claim text.