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. 25, 2002
Filed:
Nov. 16, 2000
Cheng-Wei Hsu, Tainan Hsien, TW;
Shyh-Haur Su, Hsinchu, TW;
Chieh-Wen Wang, Hsinchu, TW;
I-Chung Hou, Hsinchu, TW;
Charles C. Chang, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
The ink cartridge of the present invention uses a directional fibrous collection enclosed within a bushing to temporally retain the ink therein, wherein at least one controlled capillary portion is provided. The controlled capillary portion can be formed by the bushing or by a predetermined shape located in the cartridge. The capillary forces of the controlled capillary portion are stronger than the one of other portion of the directional fibrous collection. The flow rate of the ink can be precisely controlled by the directional fibrous collection, and the controlled capillary portion can efficiently drain out the ink to the printhead and there is no bubble left therein.