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. 19, 2013
Filed:
Oct. 28, 2009
Siddhartha Bhowmik, Salem, OR (US);
Rio Rivas, Corvallis, OR (US);
Gerald R. Wonnacott, Bend, OR (US);
Siddhartha Bhowmik, Salem, OR (US);
Rio Rivas, Corvallis, OR (US);
Gerald R. Wonnacott, Bend, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A method of method of making a corrosion resistant print head die comprises creating a self-ionized plasma (SIP) of a coating material; establishing a bias on a print head die comprising a plurality of feed slots (), each feed slot () comprising side wall surfaces (); and causing the coating material plasma to be deposited on the surfaces to form a protective coating, wherein at least a portion of the coating material is deposited on at least a portion of the surfaces by resputtering. In some cases, the feed slots have an aspect ratio greater than 2. In some cases, the feed slot comprises at least one rib (), each rib () comprising a top surface (), two side surfaces (), and an under surface (), and the formed protective coating is deposited on the top surface (), two side surfaces (), and under surface () of each rib ().