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热词
    • 65. 发明授权
    • Fixing device and image forming apparatus incorporating same
    • 固定装置和包含其的图像形成装置
    • US09152105B2
    • 2015-10-06
    • US14168357
    • 2014-01-30
    • Kazuhito Kishi
    • Kazuhito Kishi
    • G03G15/20
    • G03G15/2042G03G15/2039
    • A fixing device includes a fixing member, a pressing member, a heating unit, multiple sub-heaters disposed in the heating unit, a temperature sensor to detect a temperature of the heating unit, and a heating control unit. The heating control unit controls the heating unit by controlling the multiple sub-heaters individually to heat the respective heating areas, such that a temperature at a portion of the fixing member corresponding to a blank area of the recording medium is lower than a temperature of a portion of the fixing member corresponding to an imaged area of the recording medium. The heating control unit further changes a size of a preliminary heating area to preliminarily heat the respective heating areas before the imaged area enters the fixing nip according to the temperature detected by the temperature sensor.
    • 定影装置包括固定构件,按压构件,加热单元,设置在加热单元中的多个次加热器,用于检测加热单元的温度的温度传感器和加热控制单元。 加热控制单元通过单独控制多个分热器来加热各个加热区域来控制加热单元,使得与定影构件对应于记录介质的空白区域的部分的温度低于 固定构件的一部分对应于记录介质的成像区域。 加热控制单元根据由温度传感器检测到的温度,进一步改变预热区域的尺寸,以便在成像区域进入定影辊隙之前预先加热各个加热区域。