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:
Feb. 16, 1999
Filed:
Jul. 02, 1996
Applicant:
Inventor:
Alfred I-Tsung Pan, Sunnyvale, CA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
347 65 ; 347 15 ; 347 67 ; 347 84 ;
Abstract
A valve device is incorporated within a printhead of an ink-jet pen for regulation of ink flow and pressure within the printhead. The valve device includes a valve member comprising a resiliently deformable flap positioned in an ink channel, adjacent a firing chamber. The flap is deflectable into and out of a position to regulate ink flow and pressure both to and from the ink firing chambers.