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:
Nov. 24, 2009
Filed:
Jan. 29, 2007
Richard Fotland, Palo Alto, CA (US);
Eric Hanson, Palo Alto, CA (US);
Napolean Leoni, Palo Alto, CA (US);
Paul Mcclelland, Monmouth, OR (US);
Richard Fotland, Palo Alto, CA (US);
Eric Hanson, Palo Alto, CA (US);
Napolean Leoni, Palo Alto, CA (US);
Paul McClelland, Monmouth, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A print head includes a first electrode layer including a plurality of generator electrodes, a second electrode layer including a plurality of discharge electrodes, and an insulating layer disposed between the generator electrodes of the first electrode layer and the discharge electrodes of the second electrode layer. The discharge electrodes include at least one discharge aperture extending therethrough. Each discharge aperture has an undercut region defining a discharge surface spaced from and substantially parallel to an opposed surface of the insulating layer.