Periodate photographic bleaching method without acidic prebath

Details Periodate photographic bleaching method without acidic prebath Periodate photographic bleaching method without acidic prebath

1997-12-03

1999-03-23

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Bleaching

430393, G03C 742

Patent

active

058857583

ABSTRACT:
Color photographic elements are processed with a highly acidic periodate bleaching solution including a rehalogenating agent and a strong acid. Bleaching is carried out after color development without any intervening processing steps, such as an acidic prebath. The processing method provides rapid bleaching without physical defects such as blistering or vesiculation, and minimizes the formation of Dmin.

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patent: 5521056 (1996-05-01), Buchanan et al.
patent: 5641615 (1997-06-01), Haye et al.

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