发明名称 |
Method for driving liquid discharge head, liquid discharge head, and liquid discharge apparatus |
摘要 |
A liquid discharge apparatus includes: a liquid discharge head which includes; a discharge port to discharge a liquid; and a substrate including: an energy generating element for generating thermal energy to discharge the liquid from the liquid discharge port; a pair of electrodes connected to the energy generating element for driving thereof; an insulating layer of an insulating material provided to cover the energy generating element; and a metal layer of a metal material provided corresponding to the energy generating element to cover the insulating layer; and a driver unit which sets a first potential of one of the pair of electrodes substantially equal to the potential of the liquid and a second potential of the other one of the pair of electrodes lower than the first potential to drive the energy generating element. |
申请公布号 |
US9056461(B2) |
申请公布日期 |
2015.06.16 |
申请号 |
US201113992213 |
申请日期 |
2011.11.18 |
申请人 |
Canon Kabushiki Kaisha |
发明人 |
Sakurai Makoto;Komuro Hirokazu;Saito Ichiro;Ishida Yuzuru;Yasuda Takeru |
分类号 |
B41J2/05;B41J2/045;B41J2/14 |
主分类号 |
B41J2/05 |
代理机构 |
Canon USA Inc. IP Division |
代理人 |
Canon USA Inc. IP Division |
主权项 |
1. A liquid discharge apparatus comprising:
a liquid discharge head which includes;
a discharge port to discharge a liquid; anda substrate including:
an energy generating element for generating thermal energy to discharge the liquid from the liquid discharge port;a pair of electrodes connected to the energy generating element for driving thereof;an insulating layer of an insulating material provided to cover the energy generating element; anda metal layer of a metal material provided corresponding to the energy generating element to cover the insulating layer, the metal material containing iridium or ruthenium as a primary component; and a driver unit which sets a first potential of one of the pair of electrodes substantially equal to the potential of the liquid and a second potential of the other one of the pair of electrodes lower than the first potential to drive the energy generating element at a potential that is lower than the potential of the liquid. |
地址 |
Tokyo JP |