| 摘要 |
PROBLEM TO BE SOLVED: To jet ink without stain the periphery of a nozzle head by providing a control means for supplying an ink solvent to a nozzle in response to actuation of an ink jet recorder and supplying ink to the nozzle in response to interruption of the ink solvent supply. SOLUTION: An ink supply passage 21 comprises an ink container 1, an ink pump 2, a pressure regulation valve 3, a solenoid valve 4 and a filter 5 and a nozzle cleaning passage 23 comprises a solvent container 16, an ink solvent pump 15 and a check valve 20. A collection pump 14 and the solvent pump 15 are started by delivering a starting instruction from an input unit 19 to a controller 17 and an ink solvent is supplied through the nozzle cleaning passage 23 to a nozzle 6. Since the solenoid valve 4 is closed, the ink solvent is jetted from the nozzle 6 and since the jetted ink is not charged, it is collected in the ink container 1 through an ink collection passage 22. After stopping the solvent pump 15, the ink pump 2 is started and the solenoid valve 4 is opened in order to supply ink to the nozzle 6 through the pressure regulation valve 3 and a filter 5. |
