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:
Jun. 28, 2011
Filed:
Oct. 02, 2007
Takeo Seino, Nagano-ken, JP;
Hitotoshi Kimura, Nagano-ken, JP;
Taku Ishizawa, Nagano-ken, JP;
Yasunao Uehara, Nagano-ken, JP;
Masahide Matsuyama, Nagano-ken, JP;
Takeo Seino, Nagano-ken, JP;
Hitotoshi Kimura, Nagano-ken, JP;
Taku Ishizawa, Nagano-ken, JP;
Yasunao Uehara, Nagano-ken, JP;
Masahide Matsuyama, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
Since a bypass flowing passage which communicates with the inside of a bag part not through a second valve mechanism is provided for an outlet part, ink can be filled from the outlet part into the bag part in spite of the existence of the second valve mechanism. Further, after an empty ink pack has been housed in an inner case, the ink is filled into the ink pack. Therefore, when a first seal film is welded to the inner case, since the bag part is not bulky, the ends of the bag part are caught in a cartridge case. Therefore, the maximum amount of ink for the inner volume of the cartridge case can be filled. Further, since a bypass flowing passage is blocked after the ink has filled into the ink pack, contamination of air bubbles into the bag part through the bypass flowing passage is prevented.