Liquid purification or separation – Serially connected distinct treating with or without storage... – With storage unit
Patent
1989-05-26
1990-05-22
Cintins, Ivars
Liquid purification or separation
Serially connected distinct treating with or without storage...
With storage unit
210282, C02F 142
Patent
active
049275330
ABSTRACT:
In photographic processing apparatus for developing, bleaching-fixing and washing photographic materials, a predetermined quantity of fresh wash water is supplied into a washing tank every time a predetermined amount of the photographic materials have been washed. The fresh wash water is provided by deionizing city water and is reservoired in a replenisher tank. In order to detect a predetermined loss of the fresh wash water in the replenisher tank, a conductivity increasing material is dissolved in the fresh wash water in the replenisher tank when a predetermined quantity of the deionized water is supplied so as to electrically connect a pair of electrodes disposed at a predetermined depth of the replenisher tank. A sterilizer is mixed in the fresh wash water to prevent bacterial growth in the replenisher tank. The conductivity increasing material and the sterilizer are prepared as a predetermined dose of mixture necessary and sufficient for the predetermined quantity of deionized water supplied into the replenisher tank.
REFERENCES:
patent: 4474620 (1984-10-01), Hall
Abe Akira
Fujita Yoshihiro
Takase Haruo
Uenaka Kazushige
Cintins Ivars
Fuji Photo Film Co. , Ltd.
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