发明名称 |
PHOTOMAGNETIC RECORDING AND REPRODUCING DEVICE |
摘要 |
PURPOSE:To attain a compact design of the titled device by using a magnetism masking means to cut off the lines of magnetic force of a magnet and therefore putting the magnet close to a recording medium without affecting a magnetic field. CONSTITUTION:An erasion head 13 which can move toward the radius shown by an arrow head (a) of a disk 6 is provided under the disk 6. An erasion motor 19 is driven to move the head 13 toward the head (a). In this case, the head 13 produces a line of magnetic force having width l1 and vertical to the surface of the disk 6 and erases the information recorded within a recording area of the disk 6. After the erasion the head 13 is stored in a U-shaped iron yoke 20 provided at the end of one side of a guide member 14 in order to prevent the effects of said line of magnetic force to the disk 6. |
申请公布号 |
JPS60234251(A) |
申请公布日期 |
1985.11.20 |
申请号 |
JP19840089352 |
申请日期 |
1984.05.07 |
申请人 |
CANON KK |
发明人 |
SONOBE HIROSHI;YOMO MAKOTO;HARA YUTAKA |
分类号 |
G11B5/02;G11B5/024;G11B11/10;G11B11/105;G11B17/04 |
主分类号 |
G11B5/02 |
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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