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. 11, 2016
Filed:
Mar. 11, 2014
Daisuke Takagi, Kanagawa, JP;
Hisashi Habashi, Kangawa, JP;
Tomoyuki Aratani, Kangawa, JP;
Tatsuya Sameshima, Kangawa, JP;
Shinichi Kakuda, Kanagawa, JP;
Keisuke Hayashi, Kangawa, JP;
Juichi Furukawa, Kangawa, JP;
Daisuke Takagi, Kanagawa, JP;
Hisashi Habashi, Kangawa, JP;
Tomoyuki Aratani, Kangawa, JP;
Tatsuya Sameshima, Kangawa, JP;
Shinichi Kakuda, Kanagawa, JP;
Keisuke Hayashi, Kangawa, JP;
Juichi Furukawa, Kangawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A liquid ejection head includes channel forming members and a surface treatment film. The channel forming members are joined to each other via an adhesive agent to form a channel for liquid. The surface treatment film is formed on a surface of at least one of the channel forming members. The surface treatment film is an oxidized film including Si. The oxidized film further includes a transition metal forming a passive film.