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:
Apr. 21, 2009
Filed:
Mar. 29, 2006
Kanji Nagashima, Kanagawa, JP;
Kanji Nagashima, Kanagawa, JP;
Fujifilm Coroporation, Tokyo, JP;
Abstract
The liquid ejection head has nozzles for ejecting liquid in which a plurality of pressure chambers are arranged in a two-dimensional matrix configuration. The liquid ejection head comprises: pressure generating devices which are disposed so as to correspond to the pressure chambers and generate pressure for ejecting the liquid in the pressure chambers; pressure sensor members formed in at least two layers which determine the pressure inside the pressure chambers generated by the pressure generating devices; and electrodes which are disposed on both surfaces of one of the layers of the pressure sensor members and cause the one of the pressure sensor members to become effective determination sections.