REPLENISHER SUPPLY STRUCTURE FOR AUTOMATIC DEVELOPING MACHINE

摘要

PROBLEM TO BE SOLVED: To improve the accuracy of the rotating and driving time of a motor for controlling the driving of a pump. ;SOLUTION: In the case a processing tank is replenished with replenisher, the motor 24 is driven and rotated when a replenishment requiring signal is outputted. In order to replenish the tank with proper amount of replenisher, the driving time of the motor 24 and the supply amount of the replenisher must be previously set. Then, a pulse encoder rotating by following the rotation of the motor 24 is provided, and the driving time of the motor 24 is controlled according to the revolving speed of the rotary disk 28 of the pulse encoder. The revolving speed of the rotary disk 28 is obtained by counting a pulse signal outputted by a discrimination part 28A in a control part 30. In the case a pulse counted value attains a previously set counted value, rotating and driving the motor 24 is stopped.;COPYRIGHT: (C)1997,JPO