Method for controlling liquid ejection apparatus and liquid...

Details Method for controlling liquid ejection apparatus and liquid... Method for controlling liquid ejection apparatus and liquid...

2007-02-28

2010-11-16

Lepisto, Ryan (Department: 2883)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S005000, C347S006000, C347S020000, C347S022000, C347S024000, C347S025000, C347S029000, C347S032000, C347S092000, C347S093000

Reexamination Certificate

active

07832831

ABSTRACT:
A printer includes a recording head having a nozzle that ejects ink and a suction pump that draws the ink through the nozzle. A valve unit and a filter are arranged in a passage that supplies the ink to the recording head. A controller of the printer operates the suction pump to perform suction/suspension in which suction of the ink from the passage through the nozzle and suspension of the suction are alternately repeated with the valve unit maintained in a closed state, thus promoting joining of bubbles on the filter. The controller then operates to open the valve unit to drain the joint bubbles from the filter, together with the ink, using negative pressure accumulated in the passage.

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