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    • 43. 发明授权
    • High voltage power supply and method of outputting plus/minus high-voltage in image forming apparatuses
    • 高压电源及图像形成装置输出正/负高电压的方法
    • US08634738B2
    • 2014-01-21
    • US12695317
    • 2010-01-28
    • Chul-woo OhJong-hwa Cho
    • Chul-woo OhJong-hwa Cho
    • G03G15/00
    • G05F3/08G03G15/0283G03G15/80
    • A high-voltage power supply to output a plus/minus high-voltage, which is applied to image forming apparatuses, includes a plus high-voltage output unit outputting the plus high-voltage by using a Pulse Width Modulation (PWM) signal, a minus high-voltage operation control unit charging a certain voltage while the plus high-voltage output unit is outputting the plus high-voltage, a minus high-voltage output unit outputting the minus high-voltage by using the certain voltage charged in the minus high-voltage operation control unit, and a minus high-voltage blocking unit to block the output of the minus high-voltage from the minus high-voltage output unit while the plus high-voltage output unit is outputting the plus high-voltage.
    • 用于输出施加到图像形成装置的正/负高压的高压电源包括通过使用脉宽调制(PWM)信号输出正高电压的正高电压输出单元, 负高压运行控制单元在正高压输出单元输出正高压时给一定电压充电,负高压输出单元通过使用在负高电压下充电的一定电压输出负高电压 电压运算控制单元和负高压阻断单元,在正高电压输出单元输出正高电压时,阻断来自负高压输出单元的负高压输出。
    • 50. 发明授权
    • Fixing device and image forming apparatus having the same
    • 固定装置及其成像装置
    • US08559861B2
    • 2013-10-15
    • US13011993
    • 2011-01-24
    • Jin-sung LeeSeong-yul Kim
    • Jin-sung LeeSeong-yul Kim
    • G03G15/20
    • G03G15/2064G03G2215/2035
    • A fixing device includes a fixing belt to transmit a heat to a print medium, a pressing unit to apply a pressure on the print medium, a heating unit surrounded by the fixing belt to generate the heat and a nip plate disposed against the fixing belt and facing the pressing unit, to form a fixing nip. The fixing device further includes a support element to support the nip plate, and a reflection unit disposed within the fixing belt to reflect the heat radiated from the heating unit toward the support element. The reflection unit is connected to the nip plate to conduct the heat from the reflection unit to the nip plate.
    • 定影装置包括用于向打印介质传递热量的定影带,对打印介质施加压力的加压单元,由定影带包围以产生热量的加热单元和靠着定影带设置的夹板, 面向压制单元,以形成定影辊隙。 定影装置还包括支撑夹持板的支撑元件和设置在定影带内的反射单元,以将从加热单元辐射的热量反射向支撑元件。 反射单元连接到夹持板,以将热量从反射单元传导到夹持板。