| 摘要 |
PROBLEM TO BE SOLVED: To manage consumption of ink pertaining the recovery operation by pressure supplying ink to a recording head while closing a jet port with a cap and opening/closing the cap after a required pressure is reached thereby controlling the quantity of ink to be discharged. SOLUTION: Upon delivery of an instruction for recovering the operation of a recording head 1, a cap opening/closing frame 32 is driven to close the jet port of the recording head 1 with a cap 4. Consequently, an atmospheric opening valve 16 is closed and a pump 18 is driven to expose the inside of the recording head 1 to a high pressure. Subsequently, the valve 16 is opened and rubbing operation is performed by a specified number of times. Thereafter, an ink mass adhering to the cap 4 is scraped by the scraper 22 of a waste ink container 20 and absorbed to an absorber 21a. After the cap 4 is retracted and separated from the jet port, the valve 16 is closed and the pump 18 is driven at a low pressure to apply a low pressure for a set time to the recording head 1 and a subtank. |
