FLUID EJECTION DEVICE AND CONTROL METHOD THEREFOR

    公开(公告)号:US20180162138A1

    公开(公告)日:2018-06-14

    申请号:US15577548

    申请日:2016-05-31

    Inventor: Tomoji SUZUKI

    Abstract: Ink consumption accompanying purging bubbles from the buffer tank is suppressed. An inkjet printer has a buffer tank disposed to an ink path that supplies ink to a printhead. A first channel connects to the buffer tank at the bottom of the ink chamber, and a second channel connects to the top of the ink chamber. To print, the first valve and second valve are open, and ink is supplied from the first channel, into which bubbles do not easily flow. To purge bubbles, the first valve closes and the maintenance unit is driven in a cleaning operation, discharging bubbles with ink from the second channel. The second valve then closes, the maintenance unit is driven to create negative pressure downstream from the second valve, and the second valve then opens in a choke cleaning operation that discharges ink with entrained bubbles at once.

Patent Agency Ranking