Silver halide material for optical memory devices with luminescent reading and methods for the treatment thereof

A method for making a luminescent material for an optical memory device comprising the steps of:

• synthesizing silver halide salts;
• applying a photographic emulsion comprising microcrystals of the silver halide salts and a water soluble polymer to a substrate to form a photoplate;
• exposing said photoplate to light;
• developing and fixation of said photoplate with formation of silver particles in the places which were exposed by the light;
• oxidation of silver to form nonsoluble salts particles;
• and
• treating the photoplate with a luminescing dye and allowing the luminescing dye to be sorbed onto the particles.

The luminescent optical memory material made by the process comprising the steps of:

• applying a photographic emulsion comprising microcrystals of silver halide salts and a water soluble polymer to a substrate to form a photoplate;
• exposing said photoplate to light;
• developing and fixation of the photoplate to form silver particles from the exposed silver halide;
• treating the photoplate with a luminescing dye and allowing the luminescing dye to be sorbed onto the particles.

A Method for making a multi-layer luminescent material for a three-dimensional optical memory comprising the steps of:

• simultaneous extruding from a multi-slit filler thin layers of photographic emulsion and between them thick layers of a silver halide free polymer to a substrate;
• exposing said multi-layer material to light;
• developing and fixation of said multi-layer material to form silver particles from the exposed silver halide;
• oxidation of silver particles to form the insoluble salt particles;
• treating the photoplate with luminescing dye and allowing the luminescing dye to be sorbed onto the particles.