Photography – Fluid-treating apparatus – Having testing – calibration – or indicating
Reexamination Certificate
2006-02-21
2006-02-21
Rutledge, D. (Department: 2851)
Photography
Fluid-treating apparatus
Having testing, calibration, or indicating
C396S626000, C430S398000, C355S027000, C204S228400, C205S335000, C205S349000
Reexamination Certificate
active
07001085
ABSTRACT:
A method of processing photographic material includes the steps of processing the photographic material in a processing solution, monitoring the concentration of a process-retarding by-product of the processing in the processing solution during operation of the method, reducing the concentration of the by-product in the processing solution by a first method and as the by-product concentration in the processing solution exceeds a predetermined level, activating simultaneous operation of a second method for a period of time to thereby ensure that the photographic material is always adequately processed. The invention enables rapid processing of film whilst maintaining low replenishment rates and low fixer solution temperature such that inadequately fixed film is avoided.
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Dartnell Nicholas J.
Rider Christopher B.
Eastman Kodak Company
Rutledge D.
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