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:
Dec. 06, 2011
Filed:
Sep. 04, 2008
Masayuki Kawasaki, Saitama, JP;
Takehiko Matsuo, Tokyo, JP;
Kimio Watanabe, Yamanashi, JP;
Hiroshi Muramatsu, Saitama, JP;
Masayuki Kawasaki, Saitama, JP;
Takehiko Matsuo, Tokyo, JP;
Kimio Watanabe, Yamanashi, JP;
Hiroshi Muramatsu, Saitama, JP;
Jit Co., Ltd., Yamanashi, JP;
Abstract
An ink storage container having a simply configured ink exchange function is provided, whereby the amount of stored ink is increased. An air flow control unit for controlling the flow of air between the inside and outside is disposed in an ink storage unit for storing ink. The air flow control unit includes: a valve element that is formed of an interconnected porous material and allows air to be exchanged between the inside and outside of the ink storage unit according to positive and negative changes in the internal pressure of the ink storage unit; and a liquid repellent membrane that has air permeability and liquid repellency and is disposed on an ink side of the valve element.