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    • 6. 发明授权
    • Stepping motor control circuit and analog electronic watch
    • 步进电机控制电路和模拟电子手表
    • US08139445B2
    • 2012-03-20
    • US12661359
    • 2010-03-16
    • Keishi HonmuraSaburo ManakaKosuke YamamotoAkira TakakuraKenji OgasawaraKazumi SakumotoKazuo KatoTakanori Hasegawa
    • Keishi HonmuraSaburo ManakaKosuke YamamotoAkira TakakuraKenji OgasawaraKazumi SakumotoKazuo KatoTakanori Hasegawa
    • G06F1/04G04F5/00H02P8/00
    • 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。
    • 8. 发明授权
    • Sheet conveying apparatus and image forming apparatus
    • 片材输送装置和成像装置
    • US08079589B2
    • 2011-12-20
    • US12465977
    • 2009-05-14
    • Hiroyuki KinoshitaHideyuki TerashimaNaohiro IwataKosuke YamamotoAkihiro TomodaRyosuke SatoAkio Okubo
    • Hiroyuki KinoshitaHideyuki TerashimaNaohiro IwataKosuke YamamotoAkihiro TomodaRyosuke SatoAkio Okubo
    • B65H9/04
    • B65H9/006B65H2403/70B65H2404/1424B65H2404/1531B65H2405/332
    • A first conveying mechanism includes an intermediate conveying roller for conveying a recording sheet, an intermediate conveying roller shaft for supporting the intermediate conveying roller, an intermediate conveying roller drive mechanism for rotationally driving the intermediate conveying roller shaft, and a roller control mechanism for controlling movements of the intermediate conveying roller relative to the intermediate conveying roller shaft. The roller control mechanism performs skew correction along with conveying the recording sheet by rotating the intermediate conveying roller integrally with the intermediate conveying roller shaft while the intermediate conveying roller drive mechanism rotationally drives the intermediate conveying roller shaft and stops the rotational drive of the intermediate conveying roller shaft performed by the intermediate conveying roller drive mechanism after the skew correction to cause the intermediate conveying roller to be movable within a predetermined range in the axial direction of the intermediate conveying roller shaft.
    • 第一输送机构包括用于输送记录纸的中间输送辊,用于支撑中间输送辊的中间输送辊轴,用于旋转驱动中间输送辊轴的中间输送辊驱动机构,以及用于控制运动的辊控制机构 中间输送辊相对于中间输送辊轴。 当中间输送辊驱动机构旋转地驱动中间输送辊轴并停止中间输送辊的旋转驱动时,滚子控制机构通过与中间输送辊轴一体地旋转中间输送辊而进行扭曲校正以及输送记录纸 在偏斜校正之后由中间输送辊驱动机构执行的轴,以使中间输送辊能够在中间输送辊轴的轴向方向上的预定范围内移动。