Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Reexamination Certificate
2011-06-14
2011-06-14
Vo, Anh T. N. (Department: 2861)
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
C347S085000
Reexamination Certificate
active
07959267
ABSTRACT:
A liquid ejection apparatus having a liquid ejection head and a switching device is provided. The switching device includes a first supply passage through which first liquid flows, a second supply passage through which second liquid different from the first liquid flows, a head supply passage, a first ON-OFF valve that selectively opens and closes the first supply passage, a second ON-OFF valve that selectively opens and closes the second supply passage, a rotary cam, and an actuator. The head supply passage extends from a joining point between a downstream end of the first supply passage and a downstream end of the second supply passage to the liquid ejection head. The actuator is driven by the cam in such a manner that the first ON-OFF valve and the second ON-OFF valve are selectively opened and closed. The actuator operates the first and second ON-OFF valves in such a manner that one of the first and second ON-OFF valves becomes open and the other becomes closed.
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Kumagai Toshio
Tanaka Ryoichi
Seiko Epson Corporation
Sughrue & Mion, PLLC
Vo Anh T. N.
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