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:
Jun. 04, 2013
Filed:
Mar. 16, 2012
Satoshi Mizukami, Kanagawa, JP;
Masaki Kato, Tokyo, JP;
Takahiko Kuroda, Hyogo, JP;
Kanshi Abe, Kanagawa, JP;
Yoshikazu Akiyama, Kanagawa, JP;
Satoshi Mizukami, Kanagawa, JP;
Masaki Kato, Tokyo, JP;
Takahiko Kuroda, Hyogo, JP;
Kanshi Abe, Kanagawa, JP;
Yoshikazu Akiyama, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An inkjet head is disclosed. In the inkjet head a vibrating plate is formed on a liquid chamber substrate on which multiple dedicated liquid chambers are aligned; a first insulating film and a second insulating film are formed between a dedicated electrode wiring and a lower electrode in an area in which the dedicated electrode wiring and the lower electrode overlap; a third insulating film and a fourth insulating film are stacked in an area which includes a forming area of the dedicated electrode wiring; in at least a portion of a forming area of the dedicated liquid chamber, there is provided a non-film forming area; and, in an area including a piezoelectric element forming section, either the first insulating film and the fourth insulating film are formed in the non-film forming area, or the fourth insulating film is formed in the non-film forming area.