Gluconic acid-based developer composition

Details Gluconic acid-based developer composition Gluconic acid-based developer composition

1991-04-10

1992-09-15

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Developing

430268, 430416, 430441, 430464, 430491, G03C 530

Patent

active

051477670

ABSTRACT:
An environmentally-safe, non-toxic non-hydroquinone and non-alkali metal hydroxide containing photographic developer composition is provided comprising a developer selected from the group consisting of 2-keto gluconic acid and derivatives thereof, together with a sulfite, an alkali metal carbonate, and a 3-pyrzaolidone developer compound.

REFERENCES:
patent: 4157262 (1979-06-01), Kubotera
patent: 4232112 (1980-11-01), Kuse
patent: 4840879 (1989-06-01), Kamitakahara et al.

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