• Patent Title: Nozzle plate, liquid discharge head, liquid discharge device, and apparatus for discharging liquid
  • Application No.: US15510763
    Application Date: 2015-10-22
  • Publication No.: US10252526B2
    Publication Date: 2019-04-09
  • Inventor: Tomohiro Tamai
  • Applicant: Tomohiro Tamai
  • Applicant Address: JP Tokyo
  • Assignee: RICOH COMPANY, LTD.
  • Current Assignee: RICOH COMPANY, LTD.
  • Current Assignee Address: JP Tokyo
  • Agency: Cooper & Dunham LLP
  • Priority: JP2014-217870 20141025; JP2015-146971 20150724
  • International Application: PCT/JP2015/005322 WO 20151022
  • International Announcement: WO2016/063539 WO 20160428
  • Main IPC: B41J2/14
  • IPC: B41J2/14 B41J2/16
Nozzle plate, liquid discharge head, liquid discharge device, and apparatus for discharging liquid
Abstract:
A nozzle plate includes a nozzle base member including a plurality of nozzle holes formed therethrough, the plurality of nozzle holes serving as nozzles that discharge droplets; and a liquid-repellent film of a liquid-repellent material formed on a droplet discharge surface of the nozzle base member, the liquid-repellent material containing a liquid-repellent group. Each of the plurality of nozzle holes includes a straight hole part, the straight hole part extending from the droplet discharge surface of the nozzle base member and having a constant diameter in a thickness direction of the nozzle base member. The liquid-repellent group contained in the liquid-repellent material is attached to an inner nozzle wall of the straight hole part. When the nozzle hole is supplied with pure water, a meniscus of the pure water stays in the straight hole part.
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