Photo-finishing apparatus for silver halide photosensitive material and control method of processing solution for silver halide photosensitive material

A photo-finishing apparatus for a silver halide photosensitive material, comprising:

• an agitating device to agitate or circulate a processing solution in a processing tank;
• a heating device to heat the processing solution in the processing tank;
• a time detecting device to detect an elapsed time since a processing operation was completed;
• a temperature detecting device to detect the temperature of the processing solution in the processing tank;
• and
• a control section to control operation of the heating device and the agitating device by such ways that when the time detecting device detects the predetermined elapsed time, the control section deactivates the heating device and the agitating device, and when the temperature detecting device detects that the temperature of the processing solution in the processing tank has dropped lower than a predetermined lower limit temperature, the control section re-activates the heating device and the agitating device, and continues to activates the heating device and the agitating device until the temperature detecting device detects that the temperature of the processing solution in the processing tank has increased to a predetermined acceptable processing temperature.

A method to control processing solution for a silver halide photosensitive material, comprising steps of:

• detecting a predetermined elapsed time after a processing operation was completed, and stopping agitation of a processing solution in a processing tank;
• starting agitation of the processing solution when the temperature of the solution is lower than a predetermined lower limit temperature;
• and
• keeping agitation of the processing solution until the temperature of the processing solution increases to a predetermined acceptable processing temperature.

A method to control the processing solution for a silver halide photosensitive material, comprising steps of:

• detecting a predetermined elapsed time since the processing operation was completed, and stopping the heating and the agitation of a processing solution in a processing tank;
• starting agitation of the processing solution when the temperature of the solutions is lower than a predetermined lower limit temperature;
• and
• keeping agitation of the processing solution until the temperature of the processing solution increases to a predetermined acceptable processing temperature.