| 摘要 |
PCT No. PCT/JP93/01820 Sec. 371 Date Sep. 20, 1994 Sec. 102(e) Date Sep. 20, 1994 PCT Filed Dec. 15, 1993 PCT Pub. No. WO94/13488 PCT Pub. Date Jun. 23, 1994An ink jet printer includes a maintenance station which is simple in construction and small-sized. A cap holder is provided with a suction port communicating with a cap through a communication hole, a discharge port and a vent port. Provided in the cap holder is a cylinder which rotates upon actuation of a piston and which is provided on an outer diameter portion thereof with connection holes such that a pressure chamber is connected to the suction port in a suction stroke, the pressure chamber is connected to the discharge port and the suction port is connected to the vent port in an exhaust stroke. The cap holder contains therein the vent port for a suction pump and an atmospheric opening valve.
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