Pressure differential regulating valve unit, a liquid...

Details Pressure differential regulating valve unit, a liquid... Pressure differential regulating valve unit, a liquid...

2006-08-29

2006-08-29

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

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

Reexamination Certificate

active

07097293

ABSTRACT:
In a liquid cartridge, a surface of a valve lid side of a valve member communicates with a liquid supplying part, a surface of a first part of a wall face side of a liquid containing section communicates with the liquid containing section, in regard to the valve member, and a surface of a second part communicates with the liquid supplying part, and if the pressure of the liquid supplying part is smaller than the pressure of the liquid containing section, the valve member is pressed to the valve lid side, the liquid containing section and the liquid supplying part communicate with each other over the first and second parts of the valve member, the valve member is formed of a material softer than the wall face of the liquid containing section, and a projection is provided on a surface being in contact with the valve member in regard to the wall face of the liquid containing section along an outer circumference surrounding the first and second parts of the valve member, being in pressure contact with the valve member.

REFERENCES:
patent: 6585358 (2003-07-01), Usui et al.
patent: 6666551 (2003-12-01), Kobayashi et al.
patent: 6837575 (2005-01-01), Usui
patent: 1 258 359 (2002-11-01), None
patent: 11-170558 (1999-06-01), None
patent: 2002-2-5413 (2002-07-01), None
patent: 2002-205413 (2002-07-01), None
patent: WO-03/093019 (2003-11-01), None
European Search Report (Mar. 22, 2004).
extended European Search Report in Appln. EP 05 02 4675.0 (Feb. 6, 2006).

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