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:
Nov. 22, 2005
Filed:
May. 17, 2002
Mutsuhiko Ota, Nagano, JP;
Yukiharu Suda, Nagano, JP;
Hisashi Koike, Nagano, JP;
Satoshi Shinada, Nagano, JP;
Michinari Tsukahara, Nagano, JP;
Hisashi Miyazawa, Nagano, JP;
Mutsuhiko Ota, Nagano, JP;
Yukiharu Suda, Nagano, JP;
Hisashi Koike, Nagano, JP;
Satoshi Shinada, Nagano, JP;
Michinari Tsukahara, Nagano, JP;
Hisashi Miyazawa, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An ink cartridge has a container main body [] having a through hole [] for making an ink storage chamber and an atmospheric open chamber [] to communicate with each other, and an atmospheric open valve [] having a valve body [] capable of opening and closing the through hole [] of the container main body [] and an elastic member [] capable of pressing the valve body [] in a closed direction. In an assembling structure of the atmospheric open valve [] in the atmospheric open chamber [], the valve body [] is placed at such a position blocking the opening of the through hole [], the elastic member [] is positioned in the atmospheric open chamber [] as a bend piece shaped like < is expanded, and the elastic member [] in the positioned state presses at one end part the valve body [] in the closed direction and is fixed at an opposite end part to the inside of the atmospheric open chamber [