| 摘要 |
PURPOSE:To always obtain recording of high quality without making the moving speed of a carriage unstable while the volume of a sub-tank is kept relatively small by automatically replenishing ink from an ink tank to the sub-tank by an automatic ink replenishing device. CONSTITUTION:A main tank 118 is driven by a motor 121 to engage an ink lead-out part 116 with the ink suction part 102 of a recording head 50. When the ink of the main tank 118 is supplied to the sub-tank 103, the solenoid valve 111 connected to a nozzle is closed while a solenoid valve 112 is brought to an open state and a pump 113 is operated to reduce the pressure in the hollow part 50a of the recording head 50 and the atmospheric pressure in the sub-tank 103 is lowered to allow the ink to flow in the sub-tank 103 from the main tank 118. The inflow of the ink is continued until the sub-tank is expanded to reach the outer wall 104 of the sub-tank to stop the ink flow. |
