Color-providing compounds

Details Color-providing compounds Color-providing compounds

C - Chemistry, Metallurgy

09

B

C09B 29/30 (2006.01) C09B 1/00 (2006.01) C09B 11/00 (2006.01) C09B 23/00 (2006.01) C09B 29/50 (2006.01) C09B 45/14 (2006.01) C09B 47/04 (2006.01) C09B 55/00 (2006.01) C09B 57/00 (2006.01) G03C 1/498 (2006.01) G03C 8/10 (2006.01) G03C 8/40 (2006.01)

Patent

CA 2213342

There are described color-providing compounds having at least two cyclic 1,3-sulfur-nitrogen moieties and one complete dye or dye intermediate. The color-providing compound is stable in the photographic processing composition but capable of undergoing cleavage in the presence of an imagewise distribution of silver ions and/or soluble silver complex made available as a function of development to liberate a complete dye or dye intermediate in an imagewise distribution corresponding to that of the silver ion and/or the soluble silver complex. The color-providing compounds are useful as image-forming materials in color photographic, photothermographic, thermographic, and other processes.

La présente invention concerne des composés colorants dotés d'au moins deux fragments cycliques 1,3-soufre-azote et d'un colorant complet ou produit intermédiaire de colorant. Le composé colorant est stable dans la composition de traitement photographique mais il peut subir un clivage en présence d'une répartition formant l'image d'ions argent et/ou d'un complexe soluble d'argent, qui dépend du développement, pour libérer un colorant complet ou un produit intermédiaire de colorant selon une répartition formant l'image correspondant à celle des ions argent et/ou du complexe soluble d'argent. Lesdits composés colorants sont utiles comme matériaux de formation de l'image dans la photographie en couleurs, la photothermographie, la thermographie et d'autres procédés.

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