| 发明名称 |
Compensating for capacitance changes in piezoelectric printhead elements |
| 摘要 |
In an embodiment, a method of compensating for capacitance change in a piezoelectric element of a fluid ejection device includes sensing a current driving a piezoelectric element, determining from the current that capacitance of the piezoelectric element has changed, and altering a rise time of the current driving the piezoelectric element to compensate for the changed capacitance. |
| 申请公布号 |
US8870325(B2) |
申请公布日期 |
2014.10.28 |
| 申请号 |
US201113985757 |
申请日期 |
2011.04.28 |
| 申请人 |
Hewlett-Packard Development Company, L.P. |
发明人 |
Mardilovich Peter;Lavier Jack |
| 分类号 |
B41J2/045 |
主分类号 |
B41J2/045 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method of compensating for capacitance change in a piezoelectric element of a fluid ejection device, comprising:
sensing a current driving a piezoelectric element; determining from the current that capacitance of the piezoelectric element has changed; and altering a rise time of the current driving the piezoelectric element to compensate for the changed capacitance. |
| 地址 |
Houston TX US |
