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:
Oct. 22, 2002
Filed:
Aug. 27, 2001
Kenneth R. Williams, Vancouver, WA (US);
Ernesto A. Garay, Gresham, OR (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A method and apparatus for positioning a fluid ejection device such as an inkjet pen, or a plurality of aligned fluid ejection devices, on a supporting frame known as a printbar for page wide array printing involves provision of datum surfaces on each ejection device extending in three orthogonally related planes. The datum surfaces on the fluid ejection devices mate with positioning surfaces on the printbar to hold each fluid ejection device in correct position. A datum surface on a laterally outwardly extending key on each device is engaged by a biasing spring mounted on the printbar to position the device lengthwise of the printbar and also to prevent incorrect installation of the device.