The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 2006
Filed:
Dec. 08, 2003
Akira Ichihashi, Nagano-ken, JP;
Kenji Ito, Nagano-ken, JP;
Satoshi Shinada, Nagano-ken, JP;
Yasuto Sakai, Fukui-ken, JP;
Taku Ishizawa, Nagano-ken, JP;
Akira Ichihashi, Nagano-ken, JP;
Kenji Ito, Nagano-ken, JP;
Satoshi Shinada, Nagano-ken, JP;
Yasuto Sakai, Fukui-ken, JP;
Taku Ishizawa, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
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.