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    • 8. 发明申请
    • FIXING APPARATUS
    • 固定装置
    • US20100322657A1
    • 2010-12-23
    • US12792017
    • 2010-06-02
    • Hiromitsu KumadaTeruhiko NamikiAtsunobu Mori
    • Hiromitsu KumadaTeruhiko NamikiAtsunobu Mori
    • G03G15/20
    • G03G15/5004G03G15/2039
    • A fixing apparatus allows harmonic noise and flicker noise caused by alternating current to be reduced. To accomplish this, the fixing apparatus has a power supply unit that supplies AC power from a commercial power supply to a heater, a temperature detection element that detects the temperature of the heater, a setting unit that sets a duty ratio for providing power to the heater such that the temperature detected by the temperature detection element maintains a target temperature, and a control unit that controls the power supply unit such that an average power duty ratio of a single cycle equals the power duty ratio based on the detected temperature, where a single cycle is three or more full waves of the commercial power supply, there being three or more power duty ratios per one half wave of the commercial power supply in a single cycle.
    • 定影装置允许降低由交流电引起的谐波噪声和闪烁噪声。 为了实现这一点,定影装置具有将商用电源的交流电力提供给加热器的电源单元,检测加热器的温度的温度检测元件,设定用于向加热器供电的功率的占空比的设定单元 加热器,使得由温度检测元件检测到的温度保持目标温度;以及控制单元,其控制电源单元,使得单个周期的平均功率占空比基于检测到的温度等于功率占空比,其中 单个周期是商业电源的三个或更多个全波,在单个周期中,每个商业电源的每个半波都有三个或更多的功率占空比。
    • 10. 发明授权
    • Fixing apparatus
    • 固定装置
    • US08244150B2
    • 2012-08-14
    • US12792017
    • 2010-06-02
    • Hiromitsu KumadaTeruhiko NamikiAtsunobu Mori
    • Hiromitsu KumadaTeruhiko NamikiAtsunobu Mori
    • G03G15/20
    • G03G15/5004G03G15/2039
    • A fixing apparatus allows harmonic noise and flicker noise caused by alternating current to be reduced. To accomplish this, the fixing apparatus has a power supply unit that supplies AC power from a commercial power supply to a heater, a temperature detection element that detects the temperature of the heater, a setting unit that sets a duty ratio for providing power to the heater such that the temperature detected by the temperature detection element maintains a target temperature, and a control unit that controls the power supply unit such that an average power duty ratio of a single cycle equals the power duty ratio based on the detected temperature, where a single cycle is three or more full waves of the commercial power supply, there being three or more power duty ratios per one half wave of the commercial power supply in a single cycle.
    • 定影装置允许降低由交流电引起的谐波噪声和闪烁噪声。 为了实现这一点,定影装置具有将商用电源的交流电力提供给加热器的电源单元,检测加热器的温度的温度检测元件,设定用于向加热器供电的功率的占空比的设定单元 加热器,使得由温度检测元件检测到的温度保持目标温度;以及控制单元,其控制电源单元,使得单个周期的平均功率占空比基于检测到的温度等于功率占空比,其中 单个周期是商业电源的三个或更多个全波,在单个周期中,每个商业电源的每个半波都有三个或更多的功率占空比。