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. 21, 2000
Filed:
Dec. 16, 1999
Arnold Chang-mou Yang, Hsinchu, TW;
Ji-chen Wu, Hsinchu, TW;
Wen-kang Sung, Hsinchu, TW;
Ming-hsun Yang, Hsinchu, TW;
Wisertek International Corporation, Hsinchu, TW;
Abstract
The ink-jet cartridge of the present invention includes two magnetic plates attached to the two sides of a flexible ink reservoir and facing each other with their sides of the same magnetic polarity. Alternatively, the two magnetic plates are attached to two flexible bags within the rigid ink reservoir and face each other with their sides of the same magnetic polarity. Due to the repulsive force generated by the two magnetic plates, a pressure regulating effect can be achieved within the ink reservoir to prevent ink leakage and provide smooth ink delivery while printing.