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:
Jul. 27, 2004
Filed:
Jul. 16, 2001
Applicant:
Inventor:
Sam Sarmast, Vancouver, WA (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/925 ;
U.S. Cl.
CPC ...
B41J 2/925 ;
Abstract
Methods and systems for detecting ink droplets ejected by a printer, and for determining if the trajectory of an ink droplet deviates from a desired trajectory. In one embodiment, the ink droplet trajectory detector has multiple electrically conductive, electrically isolated sensors. Each of said sensors is configured to generate an electrical signal when an ink droplet passes in proximity thereof, without requiring the ink droplet to physically engage any portion of said sensors. The ink droplet trajectory detector also has at least one structure orienting said sensors relative to one another.