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:
Dec. 08, 2015
Filed:
May. 30, 2014
Applicant:
Ricoh Company, Ltd., Tokyo, JP;
Inventors:
Tatsuya Sameshima, Kanagawa, JP;
Shinichi Kakuda, Kanagawa, JP;
Hisashi Habashi, Kanagawa, JP;
Takashi Mori, Kanagawa, JP;
Kaname Morita, Tokyo, JP;
Daisuke Takagi, Kanagawa, JP;
Hitoshi Usami, Kanagawa, JP;
Tomoyuki Aratani, Kanagawa, JP;
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/135 (2006.01); B41J 2/14 (2006.01); B41J 2/16 (2006.01);
U.S. Cl.
CPC ...
B41J 2/1433 (2013.01); B41J 2/14233 (2013.01); B41J 2/1606 (2013.01);
Abstract
A liquid ejection head is provided. The liquid ejection head includes a nozzle substrate to eject a droplet of a liquid from a nozzle thereof; a surface treatment layer, which is located on the surface of the nozzle substrate and which is an oxide layer including silicon (Si) and a transition metal capable of forming a passive layer; and an organic liquid repellent layer located on the surface treatment layer.