Method of replenishing developing solution with replenisher

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United States of America Patent

PATENT NO 5252439
SERIAL NO

07893003

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Abstract

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A method for processing an imagewise exposed color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer comprising a silver halide emulsion containing at least 90 mol % silver chloride, comprising the steps of: (a) developing in a color developing bath; (b) bleaching in a bath having a bleaching ability and fixing in a bath having a fixing ability or bleach-fixing in a bath having a bleaching and fixing ability; and (c) independently supplying a low pH replenisher and a high pH replenisher to the developing bath each in an amount depending on the quantity of photographic material processed, the low pH replenisher having a pH of from 2 to 6 and mainly containing a color developing agent and the high pH replenisher containing one or more components of the developing bath, wherein the components of the each replenisher are sufficiently diluted upon addition to the developing bath to avoid formation of a precipitate by mixing with the components of the unlike replenisher. The developing function can be recovered by addition of small amounts of the replenishing solutions to the developing bath. Consequently, the amount of waste liquid is reduced, which in turn benefits the environment.

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Patent Owner(s)

Patent OwnerAddress
FUJIFILM CORPORATIONTOKYO 106-8620

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakamura, Koichi Kanagawa, JP 238 1734

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