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:
May. 29, 2001
Filed:
Jan. 26, 2000
Applicant:
Inventors:
Jeffrey R. Pollard, Corvallis, OR (US);
Thomas E. Pettit, Corvallis, OR (US);
Shen Buswell, Monmouth, OR (US);
Nichole Godwin, Corvallis, OR (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B 1/00 ;
U.S. Cl.
CPC ...
B24B 1/00 ;
Abstract
A technique for controlling the abrasive jet machining process to drill an ink feed slot through an ink jet printhead substrate. The approach results in a relatively even slot edge adjacent to channels that supply the ink-droplet firing chambers of the printhead. The evenness of the edge reduces the tolerances required for designing the channels and other printhead components, thus permitting the construction of printheads with increased droplet ejection frequency. The printhead size is correspondingly reduced.