Patent ID: 7506959
Filing Date: 2009-03-24
Classification: B41J

Abstract:
1. An inkjet printer comprising: a recording head having nozzles for ejecting ink; an ink tank for reserving the ink; an ink-flow passage for supplying the ink from the ink tank to the recording head; a valve for opening or closing the ink-flow passage; a filter disposed in the ink-flow passage between the valve and the recording head; a vacuum cap to be coupled to the recording head so as to cover an ejection opening of the nozzle when sucking an ink from the ejection opening; a vacuum pump for sucking the ink from the ejection opening through the vacuum cap; and a bubble-storing portion provided at least at a part of the ink-flow passage between the filter and the recording head, for storing a predetermined volume of bubble; and a bubble-injecting device for sending a bubble into the bubble-storing portion; wherein the buttle-injecting device has a structure to inject the bubble into the ejection opening of the nozzle in the recording head, and send the bubble into the bubble-storing portion.