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:
Aug. 13, 2002
Filed:
May. 29, 2001
Applicant:
Inventors:
Assignee:
Microjet Technology Co., Ltd., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/175 ;
U.S. Cl.
CPC ...
B41J 2/175 ;
Abstract
An apparatus for controlling an internal negative pressure of an ink container used in an ink-jet printing apparatus is disclosed. The apparatus includes a hollow tube located in an interior of the ink container, and a containing member connected to the hollow tube for containing therein an ink of the container to prevent an atmospheric air from entering the interior of the ink container while the ink container is placed upside down. Thus, upon the ink container is black to the normal placement and in the working status, the ink will not leak from the ink-jet head.