Photographic image enhancement by photofission

Details Photographic image enhancement by photofission Photographic image enhancement by photofission

1977-11-16

1979-01-30

Smith, Alfred E.

Radiant energy

Miscellaneous

96 27E, 156643, 204 6, G03C 508, G03C 546, G03C 1122

Patent

active

041374614

ABSTRACT:
A method for producing a replica image with enhanced contrast from an orial photographic image comprising toning the original photographic negative with a stable photofissionable isotope material, placing the toned negative in contact with a replication plate made from a transparent material in which damage tracks left by fission fragments may be made visible by some process such as etching, irradiating the toned negative with high-energy X-rays, and etching the replication plate to render the damage tracks visible and thereby produce the replica image.

REFERENCES:
patent: 3852134 (1974-12-01), Bean
patent: 3922206 (1975-11-01), Thackray

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