| 摘要 |
PROBLEM TO BE SOLVED: To minimize ink remaining on a discharge opening face and mixture of ink in a recording head, by generating a pressure balance state after a cap ping means caps wherein a pressure in a recording means and a pressure in a suction means are nearly equal, applying a negative pressure again and open ing the cap. SOLUTION: When a center gear 66 is rotated in a clockwise direction by driving of a motor, a pendulum arm 67 interlockingly rotates, and an arm cam 64 is rotated in the clockwise direction through meshing of a pendulum gear 68 and a cam gear. As a result, a cap 71 is butted against a recording head 3 via an arm 72, and an urging force of a pressuring spring 74 is applied to tightly adhere the cap to the recording head. Thereafter, when the motor rotates opposite thereby rotating a holder 70 having a gear part 70a, a tube 73 is crushed by a roller 69 and a negative pressure is generated in the cap 71, whereby the ink is sucked from the recording head 3. A subsequent swing of the arm 72 separates the cap 71 from the recording head 3 while the minute negative pressure is kept applied in the cap 71. |
