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1. 发明申请

WO1998019304A1 RECORDING/REPRODUCING HEAD, RECORDING/REPRODUCING HEAD POSITIONING MECHANISM AND RECORDER/REPRODUCER 审中-公开
标题翻译：记录/复制头，记录/再现头部定位机构和记录器/再现器
公开(公告)号：WO1998019304A1
公开(公告)日：1998-05-07
申请号：PCT/JP1997003486
申请日：1997-09-30
申请人： TDK CORPORATION , SOENO, Yoshikazu , ICHIKAWA, Shinji , TSUNA, Takamitsu , SATO, Isamu
发明人： TDK CORPORATION
IPC分类号： G11B21/10
CPC分类号： G11B5/59627 , G11B5/5552 , G11B5/58 , G11B7/0937 , G11B21/10 , G11B21/20
摘要： A recording/reproducing head has a slider (2) in which an electromagnetic transducer (or an optical module) (1) is provided, an actuator (4) and a suspension (3). The actuator has a fixed part (43) and a movable part (44) and at least (2) beam parts with which the movable part (44) is connected to the fixed part (43). The beam parts have displacement producing parts (41) which are expanded/contracted by an inverse piezoelectric effect or an electrostriction effect. The fixed part (43) is connected to the suspension (3) and the movable part (44) is fixed to the slider (2). If the displacement producing parts (41) are expanded/contracted, the displacement producing parts (41) are deflected and the linear displacement, arc-form displacement or rotary displacement of the movable part (44) is produced relatively to the fixed part (43) and, further, the electromagnetic transducer (1) is displaced to describe a linear or arc-form path which crosses recording tracks. The actuator (4) consists of a plate-shape unit which is made of piezoelectric or electrostrictive material and has a hole part and/or a cut part to form the fixed part (43), the movable part (44) and the beam parts integrally. If the summation of driving voltages applied to the respective displacement producing parts is so controlled as to be constant at any time when the positioning in a direction crossing the recording tracks is carried out by using the actuator having the construction shown in the figure, the position fluctuation of the electromagnetic transducer in a direction perpendicular to the surface of a recording medium can be suppressed.
摘要翻译：记录/再现头具有其中设置有电磁换能器（或光学模块）（1）的滑块（2），致动器（4）和悬架（3）。致动器具有固定部分（43）和可移动部分（44）和至少（2）梁部分，可动部分（44）通过该部分连接到固定部分43。光束部分具有通过反压电效应或电致伸缩效应而膨胀/收缩的位移产生部分（41）。固定部分43连接到悬架3上，可动部分44固定在滑块2上。如果位移产生部（41）膨胀/收缩，位移产生部（41）偏转，并且相对于固定部（43）产生可动部（44）的线性位移，圆弧形位移或旋转位移），此外，电磁换能器（1）被移位以描述与记录轨道交叉的线性或弧形路径。致动器（4）包括由压电或电致伸缩材料制成并具有孔部分和/或切割部分以形成固定部分（43）的板状单元，可动部分（44）和梁部分一体。如果通过使用具有图所示结构的致动器来执行施加到各个位移产生部分的驱动电压的总和，以便在通过使用具有图所示结构的致动器执行与记录轨道交叉的方向上的定位时，可以抑制电磁换能器在与记录介质的表面垂直的方向上的波动。

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