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    • 1. 发明授权
    • Magnetic recording medium containing a biaxially oriented multilayer
support
    • 含有双轴取向多层载体的磁记录介质
    • US5415933A
    • 1995-05-16
    • US107114
    • 1993-08-17
    • Tadashi IshiguroTakeshi KakutaKazuo KatoNoburo Hibino
    • Tadashi IshiguroTakeshi KakutaKazuo KatoNoburo Hibino
    • G11B5/708C09D5/23G11B5/716G11B5/73G11B5/733G11B5/738B32B33/00G11B5/66G11B5/70
    • G11B5/738G11B5/716Y10S428/91Y10T428/265Y10T428/2982
    • A magnetic recording medium is disclosed, which is formed by providing on a non-magnetic support, a lower layer comprising at least one of a ferromagnetic powder and a non-magnetic powder dispersed in a binder, and providing on the lower layer while the lower layer is in a wet condition, an upper magnetic layer comprising a ferromagnetic powder dispersed in a binder, wherein the upper magnetic layer has a dry thickness of 1.0 .mu.m or less, and the non-magnetic support is a multi-layer structural support comprising at least an uppermost support layer and a lowermost support layer, wherein the uppermost support layer is coated with the lower non-magnetic or magnetic layer, each of the uppermost layer and the lowermost layer comprises a biaxially oriented film comprising a thermoplastic resin containing filler particles, and the uppermost support layer has a center line average surface roughness Ra in the range defined by the following formula:Ra(Cut off: 0.25 mm)-Ra(Cut off: 0.08 mm).ltoreq.10 nm.
    • 公开了一种磁记录介质,其通过在非磁性载体上提供包含分散在粘合剂中的铁磁粉末和非磁性粉末中的至少一种的下层而形成,并且在下层提供下层 上层磁性层包含分散在粘合剂中的铁磁性粉末,其中上磁性层的干燥厚度为1.0μm以下,非磁性载体为多层结构载体,其包含: 至少最上面的支撑层和最下面的支撑层,其中最上面的支撑层涂覆有较低的非磁性或磁性层,最上层和最下层都包括双轴取向膜,其包含含有填料颗粒的热塑性树脂 ,最上面的支撑层的中心线平均表面粗糙度Ra在由下式限定的范围内:Ra(截止:0.25mm)-Ra(截止:0.08mm)
    • 10. 发明申请
    • Stepping motor control circuit and analog electronic watch
    • 步进电机控制电路和模拟电子手表
    • US20100238767A1
    • 2010-09-23
    • US12661359
    • 2010-03-16
    • Keishi HonmuraSaburo ManakaKosuke YamamotoAkira TakakuraKenji OgasawaraKazumi SakumotoKazuo KatoTakanori Hasegawa
    • Keishi HonmuraSaburo ManakaKosuke YamamotoAkira TakakuraKenji OgasawaraKazumi SakumotoKazuo KatoTakanori Hasegawa
    • G04B19/04H02P8/38
    • G04C3/143H02P8/02
    • A stepping motor control circuit includes a rotation detecting means which detects an induced signal generated by rotation of a rotor of a stepping motor, and detects a rotation state of the stepping motor according to whether the induced signal exceeds a predetermined reference threshold voltage in a predetermined detection section, and a control means which controls driving of the stepping motor by using any one of a plurality of main driving pulses having energies different from each other or a correction driving pulse with energy higher than energy of each main driving pulse according to a detection result of the rotation detecting means. The detection section is divided into a first section immediately after driving by the main driving pulse, a second section after the first section and a third section after the second section. During the driving of the stepping motor by the main driving pulse, when the rotation detecting means has detected an induced signal exceeding a first reference threshold voltage in the first section and the second section, if an induced signal exceeding a second reference threshold voltage lower than the first reference threshold voltage is not detected in the third section, the control means drives the stepping motor by using the correction driving pulse.
    • 步进电动机控制电路包括旋转检测装置,其检测由步进电动机的转子旋转产生的感应信号,并且根据感应信号是否超过预定的参考阈值电压来检测步进电动机的旋转状态 检测部分和控制装置,其通过使用具有彼此不同的能量的多个主驱动脉冲中的任何一个来控制步进电机的驱动,或者根据检测来控制具有高于每个主驱动脉冲的能量的能量的校正驱动脉冲 旋转检测装置的结果。 检测部分通过主驱动脉冲被分成紧接在驱动之后的第一部分,第一部分之后的第二部分和第二部分之后的第三部分。 在通过主驱动脉冲驱动步进电机的过程中,当旋转检测装置在第一部分和第二部分检测到超过第一参考阈值电压的感应信号时,如果超过第二参考阈值电压的感应信号低于 在第三部分中没有检测到第一参考阈值电压,控制装置通过使用校正驱动脉冲来驱动步进电机。