Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2008-08-25
2010-11-23
Hsieh, Shih-wen (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S029000, C347S023000, C347S032000, C347S036000
Reexamination Certificate
active
07837293
ABSTRACT:
Provided herein is a suction device that is provided in an inkjet liquid droplet ejection apparatus and sucks functional liquid while contacting with nozzle surfaces of the functional liquid droplet ejection heads. The suction device has a plurality of head caps, a suction channel having a plurality of individual channels, a plurality of channel opening/closing unit that is disposed on the individual channels and opens and closes the respective individual channels, a waste liquid tank, an ejector, a pressure adjustment unit that adjusts pressure of the compressed air at the primary side of the ejector, and a control unit that controls the pressure adjustment unit. The control unit controls the pressure adjustment unit according to the number of open-channel opening/closing units opened out of the plurality of channel opening/closing units such that a suction pressure is constant in the plurality of head caps.
REFERENCES:
patent: 5625385 (1997-04-01), Suzuki
patent: 6494560 (2002-12-01), Seshimo et al.
patent: 2004/0137159 (2004-07-01), Nakamura et al.
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Hayashi Chiyoshi
Iuchi Chieko
Harness & Dickey & Pierce P.L.C.
Hsieh Shih-wen
Seiko Epson Corporation
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