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, 2007
Filed:
Nov. 29, 2004
Jeffrey James Buchanan, Lexington, KY (US);
Ganesh Vinayak Phatak, Lexington, KY (US);
Ann Marie Trebolo, Nicholasville, KY (US);
Jeffrey James Buchanan, Lexington, KY (US);
Ganesh Vinayak Phatak, Lexington, KY (US);
Ann Marie Trebolo, Nicholasville, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
Some embodiments of the present invention provide a inkjet printhead having an internal ink reservoir, an ink via in fluid communication with the ink reservoir, a filter tower extending into the ink reservoir, and one or more walls at the base of the filter tower. In order to promote the movement of bubbles toward and into the ink via, the wall(s) at the base of the filter tower can converge and be inclined toward the ink via, and can have one or more protrusions thereon and/or recesses therein.