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:
Jan. 11, 2000
Filed:
Dec. 26, 1996
Hideaki Haigo, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
An ink cartridge is designed with a reduced number of component parts without deteriorating functions to prevent ink leakage and to detect ink depletion. The ink cartridge has an ink chamber including a foam holding chamber for holding a foam member saturated with ink to be supplied to the print heads and an ink holding chamber for holding ink to be supplied to the foam member. The ink chamber has ink filler ports for filling the ink chamber with ink and electrically conductive plug members, which are exposed to the ink chamber. The plug members close the ink filler ports and detect ink depletion in the ink chamber based on changes in electrical resistance between the plug members.