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. 14, 2016
Filed:
Aug. 21, 2013
Kenichiro Hashimoto, Kanagawa, JP;
Kenichiro Hashimoto, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A liquid ejection head includes a nozzle plate having a plurality of nozzles formed therein from which droplets are ejectable. The nozzle plate includes a nozzle substrate in which a plurality of nozzle holes each constituting a nozzle is formed, and a liquid-repellent film formed on a surface of the nozzle substrate on a droplet ejection side of the nozzle plate. A circumferential portion is formed around each nozzle on the droplet ejection side of the nozzle plate and is smoothly recessed toward an edge portion of the nozzle. The edge portion of the nozzle is smoothly continuous with an inner wall of the nozzle, and the liquid-repellent film having a uniform thickness is formed across the nozzle plate on the droplet ejection side of the nozzle plate to at least the edge portion of the nozzle.