Optical disk fixing device
专利汇可以提供Optical disk fixing device专利检索，专利查询，专利分析的服务。并且PURPOSE:To attain automatic center matching between an optical disk and a turntable and also to cope with the variation of the thickness of the optical disk due to the variation of the attracting force of an electromagnet. CONSTITUTION:A cover 9b is opened and an optical disk 12 is set onto a taper surface 13a of a center control member 13. Thus the center of the disk 12 is automatically matched with the center of a turntable 11. When the cover 9b is closed, a disk pressure member 20 is shifted toward the table 11 and connected to the member 13 by the function of a permanent magnet 22. The ON/OFF of a power supply circuit is selected to an electromagnet 19 by the detection signal supplied from a disk presence detector 24. Then a power supply A is selected by the signal sent from a disk discriminator 25 in case the disk 12 is equal to a CD. While a power supply B having higher current intensity is selected with an optical video disk. The member 20 moves downward against the power of a spring 14 after an attracting member 21 is attracted by an iron core 19a. Then the member 20 presses and fixes the disk 12 to a disk setting surface 11b of the table 11 via a friction member 21 and with the pressure according to the type of the disk 12.，下面是Optical disk fixing device专利的具体信息内容。
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