发明授权
US06350566B2 Packaged color photographic film comprising a blocked phenylenediamine developing agent and a method for processing the film 失效
包含封闭的苯二胺显影剂的包装彩色照相胶片和一种加工该膜的方法

Packaged color photographic film comprising a blocked phenylenediamine developing agent and a method for processing the film
摘要:
This invention relates to packaged photographic film that is capable of being alternately processed, according to individual consumer choice, by either (1) a traditional wet-chemistry process with a phenylenediamine-containing developer solution followed by desilvering in one or more subsequent solutions to obtain a color negative film, or (2) a thermal process involving the use of a relatively minor amount of an aqueous solution containing a liberating agent such as alkaline base to activate (unblock) a blocked phenylenediamine developing agent located within the photographic element, followed by electronic scanning of the developed film without desilvering. This invention enables a single film stock to be developed in both a conventional deep tank process and in an apparently dry process.
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