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:
Jun. 22, 2004
Filed:
Jun. 10, 2002
Applicant:
Inventor:
Graeme Scott, Dublin, IR;
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/04 ;
U.S. Cl.
CPC ...
B41J 2/04 ;
Abstract
An inkjet print head ( ) includes one or more laser sources ( ). Each laser source ( ) is actuable to emit laser radiation and each laser source is associated with one or more ink chambers ( ). Each ink chamber ( ) includes a nozzle aperture ( ) through which ink is dispensed and is arranged to, in use, communicate with an ink supply. Each chamber has a membrane ( ) arranged to contact the ink in the ink chamber, the membrane being responsive to laser radiation from an associated laser source to produce an acoustic emission capable of displacing ink from the chamber.