Method for determining a state of processing solution in a print

Details Method for determining a state of processing solution in a print Method for determining a state of processing solution in a print

1997-07-30

1999-10-19

Rutledge, D.

Photocopying

Projection printing and copying cameras

With developing

396569, 396570, 355 38, G03B 2732, G03B 2780

Patent

active

059697962

ABSTRACT:
A method for determining a state of a processing solution in a printer processor which exposes a photosensitive material to a light emitted from a light source and processes the material with processing solution, the printer processor having a function to correct exposure conditions in response to at least the amount of light from the light source, a characteristic of the photosensitive material, and a state of the processing solution by adjusting a plurality of exposure condition correction parameter values, comprising the steps of: (a) storing change history of at least one of the exposure condition correction parameter values; and (b) determining whether or not the state of the processing solution is in a preferable state based on the stored change history of at least one of the correction parameter values. Therefore, the characteristics of the change in the processing solution state appear in the history of change of the exposure condition correction parameter values. In other words, the processing solution can be determined whether or not it is in a preferable state based on the history of change of the correction parameter values.

REFERENCES:
patent: 3462221 (1969-08-01), Tajima et al.
patent: 5083154 (1992-01-01), Terashita et al.
patent: 5319408 (1994-06-01), Shiota
patent: 5517271 (1996-05-01), Yamaguchi et al.

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