发明名称 |
Focus control via AC input signal |
摘要 |
A method of mapping a surface of a printable medium comprises illuminating the surface with electromagnetic radiation and focusing the electromagnetic radiation with a focusing means. The method also includes modulating the position of the focusing means using an actuator, wherein the actuator has a resonant frequency. An input signal is provided to the actuator, wherein the input signal comprises an AC waveform having a frequency. The frequency does not correspond to the resonant frequency of the actuator. The waveform does not have higher harmonics corresponding to the resonant frequency of the actuator.
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申请公布号 |
US2006126453(A1) |
申请公布日期 |
2006.06.15 |
申请号 |
US20040009432 |
申请日期 |
2004.12.11 |
申请人 |
LIPINSKI GREG J;VAN BROCKLIN ANDREW L |
发明人 |
LIPINSKI GREG J.;VAN BROCKLIN ANDREW L. |
分类号 |
G11B7/00 |
主分类号 |
G11B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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