Photothermic composition containing onium halide sensitizer and the use thereof
Abstract
Abstract AN ONIUM HALIDE COMPOUND, SUCH A 1-PHENETHYL-2PICOLINIUM BROMIDE OR TRIMETHYLPHENYLAMMONIUM BROMIDE, WITH AN IMAGE-FORMING COMBINATION CONTAINING A HEAVY METAL SALT OXIDIZING AGENT, SUCH AS SILVER BEHENATE, AND A REDUCING AGENT, SUCH AS A BIS-NAPHTHOL REDUCING AGENT, IN A PHOTOSENSITIVE AND THERMOSENSITIVE ELEMENT SUITABLE FOR DRY PROCESSING WITH HEAT, PROVIDES INCREASED PHOTOSENSITIVITY AND IN SOME CASES REDUCED BACKGROUND DENSITIES. A COMBINATION OF A BIS-B-NAPHTHOL REDUCING AGENT AND A COLORLESS, SPEED-INCREASING, ONIOM HALIDE COMPOUND IN CONJUNCTION WITH A STABLE SOURCE OF SILVER FOR PHYSICAL DEVELOPMENT IS USEFUL IN PHOTOSENSITIVE ELEMENTS FOR DRY PROCESSING. THE ELEMENT CAN CONTAIN A SENSITIZING DYE AND AN ACTIVATOR-TONING AGENT. A STABLE, DEVELOPED IMAGE CAN BE PROVIDED BY HEATING THE ELEMENT AFTER EXPOSURE. THE PHOTOSENSITIVE COMPONENT CAN BE PHOTOGRAPHIC SILVER HALIDE OR OTHER SUITABLE PHOTOSENSITIVE METAL SALTS.
Inventors
- 👤 Richard A De Mauriac
- 👤 Gary Lynn Hiller
Bibliographic Details
Claims Analysis
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