Measuring and testing – Blower – pump – and hydraulic equipment
Reexamination Certificate
2006-11-14
2006-11-14
Raevis, Robert (Department: 2856)
Measuring and testing
Blower, pump, and hydraulic equipment
C347S019000
Reexamination Certificate
active
07134328
ABSTRACT:
A liquid-ejection testing method includes the following steps (A) to (D): (A) A step of making at least two conductive detection members be opposed, in a non-contact state, to a plurality of liquid ejecting nozzles that are to be tested, the detection members being opposed in a direction that intersects with a direction in which the plurality of liquid ejecting nozzles are arranged, each detection member corresponding to a different liquid ejecting nozzle. (B) A step of ejecting a charged liquid from each of the plurality of liquid ejecting nozzles. (C) A step of detecting an induced current generated at each of the detection members by the liquid that has been ejected from each of the liquid ejecting nozzles (D) A step of judging whether or not ejection of the liquid is being properly performed for each of the plurality of liquid ejecting nozzles, based on a magnitude of the induced current that has been detected.
REFERENCES:
patent: 2004/0207676 (2004-10-01), Yamada et al.
patent: 2005/0212844 (2005-09-01), Nishihara
patent: 11-170569 (1999-06-01), None
patent: 2000-233520 (2000-08-01), None
Komatsu Shinya
Nishihara Yuichi
Raevis Robert
Seiko Epson Corporation
Sughrue & Mion, PLLC
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