Liquid pump and inkjet printer equipped with liquid pump

Details Liquid pump and inkjet printer equipped with liquid pump Liquid pump and inkjet printer equipped with liquid pump

2011-08-23

2011-08-23

Lepisto, Ryan (Department: 2883)

Incremental printing of symbolic information

Ink jet

Controller

C347S084000, C347S085000, C347S086000, C347S087000, C347S088000, C347S089000, C347S090000, C347S091000, C347S092000, C347S093000, C347S094000

Reexamination Certificate

active

08002372

ABSTRACT:
A long-life pump capable of simultaneously conveying plural liquids and an inkjet printer having the pump are provided. The liquid pump includes: a liquid storage unit having liquid chambers trapping at least two types of liquids with each chamber corresponding to the type of the trapped liquid; a coupling member for connection to each liquid chamber of the liquid storage unit; a pressure adjusting mechanism, connected to the coupling member, for alternately switching between a negative pressure and a positive pressure of an internal pressure of the liquid chamber; an inlet valve capable of passing the liquid to the liquid chamber; an outlet valve discharging the liquid in the liquid chamber; and a pass resistance variable mechanism adjusting an amount of the liquid trapped in the liquid chamber depending on a level of the liquid in the liquid chamber.

REFERENCES:
patent: 6554405 (2003-04-01), Ohnishi et al.
patent: 7083253 (2006-08-01), Kimura et al.
patent: 7178911 (2007-02-01), Katayama et al.
patent: 7325908 (2008-02-01), Katoh et al.
patent: 7380923 (2008-06-01), Matsuda et al.
patent: 7547097 (2009-06-01), Tsukada et al.
patent: 7784923 (2010-08-01), Ishizawa et al.
patent: 2005/0068383 (2005-03-01), Matsuda et al.
patent: 2006/0082621 (2006-04-01), Tsukada et al.
patent: 2002-307724 (2002-10-01), None

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