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:
Sep. 25, 2001
Filed:
Oct. 25, 1999
Applicant:
Inventors:
Tse-Chi Mou, Hsin-Chu, TW;
Fu-San Lin, Hsin-Chu, TW;
Jing-Yuan Ho, Hsin-Chu, TW;
Chin-Yi Chou, Hsin-Chu, TW;
Assignee:
Microjet Technology Co., Ltd., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/175 ; G01D 1/518 ;
U.S. Cl.
CPC ...
B41J 2/175 ; G01D 1/518 ;
Abstract
A pressure adjustment device in an ink cartridge employs an elastic air bag in communication with the atmosphere through a ventilation hole in a connection body which is installed in a top wall of the cartridge housing. Response to pressure changes is increased by a spring connected between a bottom end of the air bag and a bottom wall of the cartridge housing which applies a pulling force to the bottom end of the air bag.