| 摘要 |
PURPOSE:To remove the missing of a dot due to the shortage of ink in a wire approximately completely by forming a bypass communicating the deep section of a cylinder section and an ink supply chamber between both the deep section and the ink supply chamber. CONSTITUTION:A bypass 7G mutually communicating the deep section of a cylinder section 7d and an ink-layer forming chamber 7C is shaped between these deep section and ink-layer forming chamber 7C, and ink in the ink-layer forming chamber 7C is sucked into the cylinder section 7d through the bypass 7G when a wire 6 is returned to the position of stoppage from the position of printing while outside air is also sucked into the cylinder section 7d. Since the bypass 7G is formed between an end section on the printing surface side of the cylinder section 7d and the ink-layer forming chamber 7C, however, the inflow of the air is prevented completely by an ink sucked into the cylinder section 7d and the inside of the ink-layer forming chamber 7C is brought to negative pressure, and the ink in an ink chamber 7B is drawn-in through an ink path 7F. Accordingly, the shortage of the supply of ink can be obviated approximately completely, and the missing of dots can be removed approximately perfectly. |
