Use of development inhibitor releasing compounds in photothermographic elements
Abstract
Abstract A SILVER HALIDE DEVELOPMENT INHIBITOR RELEASING COMPOUND, SUCH AS A DEVELOPING AGENT OR COUPLER CONTAINING A DEVELOPMENT INHIBITOR MOIETY WHICH IS RELEASABLE UPON HEATING, IN A PHOTOGRAPHIC AND THERMOSENSITIVE ELEMENT SUITABLE FOR DRY PROCESSING, PROVIDES IMPROVED BLACK TONE, REDUCED BACKGROUND PRINT-OUT, IMPROVED IMAGE STABILITY, AND REDUCTION OF EXPOSURE AND PROCESSING TIME IN SOME CASES. A COMBINATION OF A SILVER HALIDE DEVELOPMENT INHIBITOR RELEASING COMPOUND, SUCH AS ONE CONTAINING A HEAT RELEASABLE PHENYLMERCAPTOTETRAZOLE GROUP, IN COMBINATION WITH A STABLE SOURCE OF SILVER FOR PHYSICAL DEVELOPMNET ARE USEFUL IN PHOTOGRAPHIC ELEMENTS FOR DRY PROCESSING. THE ELEMENT CAN CONTAIN A SENSITIZING DYE AND A STABLE DEVELOPED IMAGE CAN BE PROVIDED BY HEATING THE ELEMENT AFTER EXPOSURE. THE PHOTOGRAPHIC COMPONENT CAN BE PHOTOGRAPHIC SILVER HALIDE, OR OTHER SUITABLE PHOTOGRAPHIC METAL SALTS.
Inventors
- 👤 Mary J Youngquist
Bibliographic Details
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