Valve unit and liquid ejecting apparatus

Details Valve unit and liquid ejecting apparatus Valve unit and liquid ejecting apparatus

2007-01-16

2007-01-16

Vo, Anh T. N. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

C137S447000, C251S149200

Reexamination Certificate

active

10870448

ABSTRACT:
The pressure of a pressure chamber decreases as liquid is ejected from an ejecting head. A valve element of a valve unit is provided inside the pressure chamber. The valve element has a power point part, fulcrum part and application point part. The power point part is subject to a pushing force in accordance with a decline in the pressure of the pressure chamber. The fulcrum part supports the valve element with respect to a wall surface defining the pressure chamber such that the valve element rotates. The application point part separates from the valve seat as the valve element rotates. The fulcrum part is not fixed to the wall surface. Hence, the valve unit operates favorably in accordance with the pressure of ink.

REFERENCES:
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patent: 6186414 (2001-02-01), Clearman et al.
patent: 6474623 (2002-11-01), Davies
patent: 6685307 (2004-02-01), Dowell et al.
patent: 6926396 (2005-08-01), Ota et al.
patent: 6929357 (2005-08-01), Qingguo et al.
patent: 09-11488 (1997-01-01), None
patent: 10-250096 (1998-09-01), None
patent: 2001-38925 (2001-02-01), None
patent: WO03/041964 (2003-05-01), None

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