Invention Grant
- Patent Title: Ink jet recording head and ink jet recording apparatus with nozzle member having an ink-repellent layer
- Patent Title (中): 具有喷墨构件的喷墨记录头和喷墨记录装置具有防墨层
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Application No.: US11468929Application Date: 2006-08-31
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Publication No.: US07681988B2Publication Date: 2010-03-23
- Inventor: Michinari Mizutani
- Applicant: Michinari Mizutani
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon USA Inc IP Div
- Priority: JP2005-256522 20050905
- Main IPC: B41J2/14
- IPC: B41J2/14 ; B41J2/135

Abstract:
An inkjet recording head using pigment ink as discharged ink includes a nozzle member having a nozzle for discharging ink. The nozzle member has an ink-repellent layer forming a discharge port face having a discharge port that is an open end of the nozzle. The ink jet recording head further includes a projection portion positioned around the discharge port and protruding along a central axis of the nozzle with respect to the discharge port face. The nozzle, in a cross section passing through the central axis of the nozzle, has an outline shape provided with a curved line having a changing curvature radius. A point at which the curvature radius of the curved line is minimum is included in the projection portion and has a maximum height from the discharge port face in the cross section.
Public/Granted literature
- US20070057997A1 INK JET RECORDING HEAD AND INK JET RECORDING APPARATUS Public/Granted day:2007-03-15
Information query
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