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. 13, 2003
Filed:
Jun. 06, 2001
Applicant:
Inventors:
James A. Feinn, San Diego, CA (US);
Colin C. Davis, Corvallis, OR (US);
Lawrence H. White, Corvallis, OR (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/05 ; B41J 2/17 ;
U.S. Cl.
CPC ...
B41J 2/05 ; B41J 2/17 ;
Abstract
An inkjet printhead is provided with a high nozzle packing density. The printhead has ink feed holes for each firing chamber that are individually tuned such that the pressure drop from the reservoir to the firing chamber is held constant for all firing chambers on said printhead.