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:
Mar. 22, 2011
Filed:
Jul. 28, 2006
Jeremy Harlan Donaldson, Corvallis, OR (US);
Michael Hager, Corvallis, OR (US);
Bradley D. Chung, Corvallis, OR (US);
Thomas R. Strand, Corvallis, OR (US);
Jeremy Harlan Donaldson, Corvallis, OR (US);
Michael Hager, Corvallis, OR (US);
Bradley D. Chung, Corvallis, OR (US);
Thomas R. Strand, Corvallis, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A fluid ejection device includes a fluidic layer assembly mounted to a substrate, the fluidic layer assembly having a raised portion formed on a side that faces away from the substrate. A first nozzle is formed through a portion of the fluidic layer assembly other than the raised portion, and a second, larger nozzle is formed through the raised portion. A method of fabricating a fluid ejection device includes applying a first layer of a photoresist material to a substrate and a second layer of a photoresist material to the first layer. A sequence of exposures defines a first region of soluble material in the first layer that becomes the first nozzle and second and third regions of soluble material in the first and second layers, respectively, that jointly become the second nozzle. A region of insoluble material in the second layer becomes the raised portion.