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 fix an optical disk without eccentricity by driving the optical disk, which is supported by an elastic supporting means, with such prescribed rotation number that the optical disk is not eccentric and supporting the optical disk rigidly thereafter by a controller. CONSTITUTION:When a current in a certain direction is flowed to a coil 9, an electromagnetic force is generated in a gap 10, and a slider 22 and an optical disk fixing flange 3 are moved downward in the axial direction to interpose and fix an optical disk 1 between optical disk fixing flanges 3 and 2. A motor 12 is controlled by a motor driving circuit 11 so that a revolving shaft 4 is accelerated up to a rotation number sufficiently higher than the dangerous speed of an oscillating system consisting of a spring member 5 and the optical disk 1, and a rotative speed where the whirling oscillation is sufficiently reduced is detected by a speed detector 13 such as a tachogenerator or the like, and the detection signal is used as a current direction switching signal of a current supply circuit 14 to the coil 9; and thus, the optical disk 1 is supported automatically rigidly and is fixed in a minimum eccentricity state.，下面是Optical disk fixing device专利的具体信息内容。
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