| 摘要 |
PURPOSE:To shorten the maintenance time while minimizing the suction ink volume by detecting the temperature of a diaphragm pump, etc., retrieving a negative pressure-establishing speed selecting data table, selecting the negative pressure-establishing speed corresponding to the detected temperature, and operating the pump. CONSTITUTION:When a printing quantity becomes a predetermined value and a maintenance request is generated by a switch operation, etc., on an operating panel 35, the diaphragm pump temperature detected by temperature detecting means 26 is stored in the work area of a RAM 33. Then, an operating time (negative pressure establishing speed) selecting data table 33T is retrieved, the operating time corresponding to the detected temperature is selected, and stored. Then, when a head is moved to a cap and a tube clamper 13 is clamped, a motor 22 is rotated for the selected pump operating time, and a diaphragm pump 21 is sucked. Then, the clamping of the clamper 13 is released, ink is sucked from the head, and recovered to a tank. |
