Photographic elements containing .alpha.-reto acyl or ester...

Details Photographic elements containing .alpha.-reto acyl or ester... Photographic elements containing .alpha.-reto acyl or ester...

G - Physics

03

C

96/100, 96/185,

G03C 1/40 (2006.01) G03C 8/00 (2006.01) G03C 8/08 (2006.01)

Patent

CA 1154625

-a- NOVEL ELECTRON DONOR PRECURSORS AND PHOTOGRAPHIC ELEMENTS CONTAINING THEM Abstract of the Disclosure: Novel electron donor precursors have the structure: Image where: R is an alkali labile group; Y is an aliphatic or aromatic group; and Z is an electron withdrawing group. The compounds are useful in photographic elements, film units and processes to provide electrons to immobile compounds which must accept at least one electron before releasing a diffusible dye or photographic reagent.

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