| 发明名称 |
LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS |
| 摘要 |
In a liquid ejection head for ejecting liquid by using thermal energy, reduction of film thickness caused by elution of a protective layer when kogation on the protective layer is removed is uniformized and decrease in liquid ejection performance is suppressed. More specifically, a counter electrode is provided around a portion on which an ejection port of a flow path forming member is formed. |
| 申请公布号 |
US2015109371(A1) |
申请公布日期 |
2015.04.23 |
| 申请号 |
US201414511427 |
申请日期 |
2014.10.10 |
| 申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
Ishida Yuzuru;Sakuma Sadayoshi;Yoshinari Norihiro;Saito Ichiro;Kato Maki;Takahashi Kenji;Misumi Yoshinori |
| 分类号 |
B41J2/14 |
主分类号 |
B41J2/14 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A liquid ejection head comprising:
a heating section, a protective film provided above the heating section, an electrode capable of generating a voltage between the protective film and the electrode; and an ejection port, so as to eject liquid from the ejection port with use of heat generated by the heating section via the protective film, wherein the protective film and the electrode are arranged such that a distance between the protective film and the electrode satisfies 1<a/b2 when a maximum distance is set as “a” and a minimum distance is set as “b”. |
| 地址 |
Tokyo JP |
