Liquid ejector cleaning method and liquid ejector

Details Liquid ejector cleaning method and liquid ejector Liquid ejector cleaning method and liquid ejector

2008-07-22

2008-07-22

Hsieh, Shih-Wen (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S030000, C347S032000, C347S023000

Reexamination Certificate

active

10594500

ABSTRACT:
Recording head of a printer is sealed by a cap connected with a gear pump. Fluid is discharged from a nozzle through the cap by a negative pressure being generated by the gear pump. The gear pump is driven at a first rotational speed to suck the fluid in the cap and to discharge the fluid from the nozzle. Subsequently, the gear pump is driven at a second rotational speed lower than the first rotational speed and then it is stopped. This prevents backflow of the fluid to a liquid ejection head and breakage of a liquid meniscus in the nozzle of the liquid ejection head occurring when cleaning of the liquid ejection head is ended.

REFERENCES:
patent: 6036299 (2000-03-01), Kobayashi et al.
patent: 6302531 (2001-10-01), Usui et al.
patent: 6-328730 (1994-11-01), None
patent: 9-240016 (1997-09-01), None
patent: 11-348318 (1999-12-01), None
patent: 2000-218806 (2000-08-01), None
patent: 2003-182116 (2003-07-01), None

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