Printing apparatus, print head performance recovery device...

Details Printing apparatus, print head performance recovery device... Printing apparatus, print head performance recovery device...

2006-08-29

2006-08-29

Hsieh, Shih-Wen (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S023000, C347S029000, C347S030000, C347S032000, C347S033000

Reexamination Certificate

active

07097272

ABSTRACT:
This invention provides a small and simple construction to drive a mechanism for maintaining a printing performance of a print head. In one preferred mode of the invention, a recovery device to maintain the printing performance of the print head has a suction pump unit, a capping unit and a wiping unit. The suction pump unit is driven through a spring clutch mechanism by an LF motor in the print sheet transport unit as a drive source. The capping unit and the wiping unit are driven by an AP motor as a drive source in a rotary dead zone set for a paper feed unit that feeds the print sheet to a transport unit. A piston pump is suited for use in a recovery operation to maintain the function of the print head.

REFERENCES:
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patent: 6050668 (2000-04-01), Ikado
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patent: 6390592 (2002-05-01), Okamura
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patent: 11-138782 (1999-05-01), None
patent: 2000-135794 (2000-05-01), None
patent: 2001-58731 (2001-03-01), None
patent: 2001-58742 (2001-03-01), None

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