发明名称 |
METHOD AND APPARATUS TO CHECK PIEZOELECTRIC INKJET HEAD |
摘要 |
A method and apparatus to check an operation of a piezoelectric inkjet head includes a first current detection unit to detect a first current output from a piezoelectric element of the piezoelectric inkjet head when a predetermined voltage is applied, a second current detection unit to detect a second current from a capacitor having a capacitance with the same magnitude as a capacitor component of the piezoelectric element when the voltage is applied to the capacitor, and a third current detection unit to detect a third current corresponding to a difference between the first current and the second current, as the amount of deformation of the piezoelectric element according to the application of the voltage.
|
申请公布号 |
US2008136859(A1) |
申请公布日期 |
2008.06.12 |
申请号 |
US20070775295 |
申请日期 |
2007.07.10 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
KIM WOO-SIK;KWON KYE-SI;KIM SEONG-JIN;SHIN SEUNG-JOO;KIM BYUNG-HUN;KIM SANG-IL |
分类号 |
B41J29/393 |
主分类号 |
B41J29/393 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|