PROCESSING OF COLOR PHOTOHERMOGRAPHIC ELEMENT COMPRISING DRY THERMAL DEVELOPMENT AND WET CHEMICAL FURTHER PROCESSING

The present invention is directed to a method of processing color photographic film that has been imagewise exposed in a camera, said film having at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one...

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Bibliographische Detailangaben
Hauptverfasser: IRVING, MARK, EDWARD, SOUTHBY, DAVID, THOMAS
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:The present invention is directed to a method of processing color photographic film that has been imagewise exposed in a camera, said film having at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, binder, and dye-providing coupler, which method in order comprises: (a) thermally developing the film step without any externally applied developing agent, comprising heating said film to a temperature greater than 80 DEG C in an essentially dry process, such that an internally located blocked developing agent in reactive association with each of said three light-sensitive units becomes unblocked to form a developing agent, whereby the unblocked developing agent forms dyes by reacting with the dye-providing couplers to form a color negative image; (b) processing the developed film of step (a) by contacting it with a non-blocked developing agent, under agitation at a temperature of 30 to 50 DEG C under aqueous alkaline conditions, without forming a color negative image in the film by reaction of the non-blocked developing agent with dye-proving couplers inside the silver-halide emulsions, and (c) desilvering said film in one more desilvering solutions to remove unwanted silver and/or silver halide, thereby forming a color negative image; and (d) thereafter forming a positive-image color print from the desilvered film. La présente invention concerne un procédé de traitement de pellicule photographique couleur qui a été exposée image par image dans un appareil photo, cette pellicule possédant au moins trois unités sensibles qui ont leurs sensibilités individuelles dans différents domaines de longueur d'onde, chacune de ces unités comprenant au moins une émulsion d'halogénure d'argent sensible à la lumière, des liants et des coupleurs de formation de colorant. Ce procédé consiste: (a) en une étape de développement thermique sans application extérieure d'agent révélateur, qui consiste à chauffer cette pellicule à une température supérieure à 80 DEG C dans un processus essentiellement sec, de sorte qu'un agent de développement non activé localisé à l'intérieur de cette pellicule en association réactive avec chacune des trois unités photosensibles soit activée de façon à former un agent de développement, cet agent de développement activé formant des colorants par réaction avec les coupleurs de formation de colorant afin de donner