Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2005-10-31
2010-02-23
Meier, Stephen D (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
Reexamination Certificate
active
07665822
ABSTRACT:
The present invention provides an ink jet recording apparatus having an ink jet recording head provided with a plurality of nozzles through which inks of a plurality of colors are ejected, a cap to be detachably brought into close contact with a nozzle face in which holes of the plurality of nozzles are formed, and ink-suction means which sucks an ink within the ink jet recording head by way of the cap. The apparatus is configured such that contact angles θa of the inks with respect to the nozzle face and contact angles θb of the inks with respect to the cap have a relation of θa>θb; and the angles θa are 50° or larger, and differences between the angles θa and the angles θb are 40° or larger.
REFERENCES:
patent: 5563640 (1996-10-01), Suzuki
patent: 5670997 (1997-09-01), Sugimoto et al.
patent: 6938986 (2005-09-01), Macler et al.
patent: 2002/0109744 (2002-08-01), Shindo
patent: 2006/0181568 (2006-08-01), Aoki
patent: 4-294145 (1992-10-01), None
patent: 7-117242 (1995-05-01), None
patent: 7-290724 (1995-11-01), None
Computer-Generated English Translation of Claims and Specification and Patent Abstracts of Japan of JP 7-290724 dated Nov. 7, 1995.
Computer-Generated English Translation of Claims and Specification and Patent Abstracts of Japan of JP 7-117242 dated May 9, 1995.
Patent Abstracts of Japan of JP 4-294145 dated Oct. 19, 1992.
Ladas and Parry LLP
Meier Stephen D
Seiko Epson Corporation
Witkowski Alexander C
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