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:
Mar. 16, 2004
Filed:
Oct. 11, 2001
James A Mott, San Diego, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A thermal ink jet printer for printing an image on a receiver and method of assembling the printer. The printer comprises a print head defining a first chamber and a second chamber therein. The first chamber contains a working fluid and the second chamber contains an ink body. A flexible membrane separates the first chamber and the second chamber. A first transducer in the first chamber induces a first pressure wave in the working fluid that flexes the membrane into the second chamber to pressurize the ink body and eject an ink drop from the second chamber through an outlet. A second transducer in the first chamber induces a second pressure wave that flexes the membrane into the second chamber to damp the first pressure wave transmitted into the second chamber.