发明授权
- 专利标题: Fast decay ultrasonic driver
- 专利标题(中): 快速衰减超声波驱动器
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申请号: US11592362申请日: 2006-11-03
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公开(公告)号: US07529512B2公开(公告)日: 2009-05-05
- 发明人: Jerry F. Adams , David B. Montfort , John R. Falvo
- 申请人: Jerry F. Adams , David B. Montfort , John R. Falvo
- 申请人地址: US CT Norwalk
- 专利权人: Xerox Corporation
- 当前专利权人: Xerox Corporation
- 当前专利权人地址: US CT Norwalk
- 代理机构: Fay Sharpe LLP
- 主分类号: G03G15/16
- IPC分类号: G03G15/16
摘要:
Acoustic Transfer Assist (ATA) systems are used in media printing devices to help transfer toner to paper by use of ultrasonic vibrations. The transducer is driven at its resonant frequency, though somewhat dampened. To shorten the decay time of the transducer when its vibration is not desired, a compensating signal is used. A reverse drive voltage is used during transducer shut-off. The reverse drive causes the transducer to vibrate at its normal resonant frequency, but at a 180° phase shift, causing the transducer to stop vibrating significantly faster than without a reverse drive. An open phase-locked loop system drives the transducer from resonance to rest. When the transducer stops vibrating, current to the reverse drive loop is cut off.
公开/授权文献
- US20080107458A1 Fast decay ultrasonic driver 公开/授权日:2008-05-08
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