Invention Grant
- Patent Title: Liquid discharge head with protective layer and liquid discharge device
- Patent Title (中): 液体排放头带保护层和液体排出装置
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Application No.: US13693845Application Date: 2012-12-04
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Publication No.: US08721050B2Publication Date: 2014-05-13
- Inventor: Yuzuru Ishida , Maki Kato , Kenji Takahashi , Ichiro Saito
- Applicant: Canon Kabushiki Kaisha
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc., IP Division
- Priority: JP2011-267153 20111206
- Main IPC: B41J2/05
- IPC: B41J2/05

Abstract:
A liquid discharge head, contains: an energy generating element which generates thermal energy and contains a heat generation resistant layer and a pair of electrode layers whose end surfaces are separated from each other; an insulating layer covering the pair of electrode layers and the heat generation resistant layer and containing an insulating material; a protective layer provided above the insulating layer at least at a position corresponding to the energy generating element and containing a metal material containing iridium or ruthenium; and a covering layer provided at a position covering at least portions of the protective layer corresponding to the end surfaces of the pair of electrode layers in such a manner that a part of the protective layer is exposed and containing a metal material containing tantalum or niobium.
Public/Granted literature
- US20130141494A1 LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE DEVICE Public/Granted day:2013-06-06
Information query
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