Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-07-05
2009-06-09
Meier, Stephen D (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S023000, C347S029000, C347S030000
Reexamination Certificate
active
07543907
ABSTRACT:
A valve unit36is placed in an ink flow passage35between an ink cartridge8and a recording head7and can be controlled in association with the cleaning operation of the recording head7. Under the control of a drive controller, the valve unit36holds for a predetermined time a state in which negative pressure produced by a suction pump is accumulated, and is opened after the expiration of the predetermined time or is opened with the negative pressure accumulated and driving the suction pump is continued. The air bubbles remaining in a stuck state in the ink flow passage can be peeled from the ink flow passage together with an instantaneous fast ink flow produced as the valve unit36is opened, and the peeled air bubbles can be discharged effectively from the ink flow passage following the subsequent ink flow.
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Patent Abstracts of Japan, Publication No. 06106731, published Apr. 19, 1994, Torachika.
Aruga Yoshiharu
Harada Shuhei
Hayakawa Hitoshi
Kimura Hitotoshi
Kobayashi Atsushi
Meier Stephen D
Seiko Epson Corporation
Sughrue & Mion, PLLC
Tran Ly T
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