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    • 13. 发明授权
    • Clamshell type image forming apparatus
    • 蛤壳型成像装置
    • US5300979A
    • 1994-04-05
    • US022779
    • 1993-02-23
    • Yukio TsukakoshiKiyoshi MiyaiSatoshi HiroseTatsuhito HoriuchiMinoru Kumida
    • Yukio TsukakoshiKiyoshi MiyaiSatoshi HiroseTatsuhito HoriuchiMinoru Kumida
    • G03G21/16G03G15/00G03G15/06
    • G03G21/1817G03G21/1628G03G21/1828G03G2221/1687G03G2221/183
    • A clamshell type image forming apparatus, in which a process cartridge included in an upper structure is supported pivotably to a fixed position and a dismounting position against the upper structure, a developing unit included in a lower structure is supported thereon pivotably to a position just opposing to an image holding medium and a position spaced therefrom, and a plate spring which urges the developing unit toward a position spaced from the image holding medium is disposed on the lower structure side, and a plate spring which urges the developing unit toward a position just opposing to the image holding medium is disposed on the upper structure side, thereby inconveniences produced by providing the process cartridge on the upper structure are solved, and by reducing a collision between the developing unit and the image holding medium due to the open-and-close operation of the upper structure, it is possible to prevent a damage of the process cartridge including the image holding medium.
    • 一种蛤壳型图像形成装置,其中包括在上部结构中的处理盒可枢转地支撑到固定位置和抵靠上部结构的拆卸位置,包括在下部结构中的显影单元可枢转地支撑到刚好相对的位置 涉及一种图像保持介质和与其分开的位置,并且在下部结构侧设置有将显影单元朝向与图像保持介质隔开的位置推动的板簧,以及将显影单元朝向刚刚的位置推压的板簧 与图像保持介质相对设置在上部结构侧,从而解决了通过在上部结构上设置处理盒而产生的不便,并且通过减少显影单元和图像保持介质之间的碰撞, 关闭上部结构的操作,可以防止包括图像保持架的处理盒的损坏 g介质。
    • 15. 发明授权
    • Device for driving inverter
    • 变频器驱动装置
    • US08477518B2
    • 2013-07-02
    • US12921956
    • 2009-02-23
    • Naoyoshi TakamatsuSatoshi Hirose
    • Naoyoshi TakamatsuSatoshi Hirose
    • H02M7/527
    • H02M1/08H02M2001/0029H03K17/163H03K17/166H03K17/168H03K2217/0036
    • Disclosed is a device for driving an inverter having a semiconductor switching element. A gate voltage calculating unit (20) calculates a surge voltage from the temperature, current, and DC-side voltage of each of IGBTs of the inverter and compares the surge voltage with the breakdown voltage of the element. The gate voltage calculating unit (20) commands a gate voltage control unit (22) to set a gate voltage higher than the normal value (reference value) in the case of judging that the difference between the element breakdown voltage and the surge voltage exceeds a predetermined threshold voltage and that a margin exists in the surge voltage. The voltage control unit (22) performs switching control of gates of the IGBTs according to the gate voltage command higher than the reference voltage to thereby reduce stationary losses of the IGBTs.
    • 公开了一种用于驱动具有半导体开关元件的逆变器的装置。 栅极电压计算单元(20)根据逆变器的每个IGBT的温度,电流和直流侧电压来计算浪涌电压,并将该浪涌电压与元件的击穿电压进行比较。 在判定元件击穿电压与浪涌电压之间的差异超过a的情况下,栅极电压计算单元(20)命令栅极电压控制单元(22)设定高于正常值(基准值)的栅极电压 预定的阈值电压,并且在浪涌电压中存在余量。 电压控制单元(22)根据高于基准电压的栅极电压指令来对IGBT的栅极进行开关控制,由此减小IGBT的稳定损耗。