发明名称 |
Automatic replenisher system for a photographic processor |
摘要 |
An automatic replenishing system for maintaining the chemical concentration of the liquid in a film processing tank, which automatically energizes a replenishing pump at regular timed intervals (e.g. every 30 seconds) regardless of whether or not the control circuitry indicates a need for replenishment, and which includes an element for sensing the density and velocity of the film and for producing a combined signal which controls the running time of the pump after each energization. The replenishing system also includes a second replenishing pump for maintaining the condition of the liquid in the processing tank, which second pump is energized automatically after a predetermined number of said regular timed intervals, or after a predetermined number of said regular timed intervals in which a zero film density or non-use condition has been detected for a preset running time.
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申请公布号 |
US4057818(A) |
申请公布日期 |
1977.11.08 |
申请号 |
US19750590078 |
申请日期 |
1975.06.25 |
申请人 |
PAKO CORPORATION |
发明人 |
GASKELL, ALFRED J.;CHARNLEY, RALPH L. |
分类号 |
G03D3/06;(IPC1-7):G03D13/00 |
主分类号 |
G03D3/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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