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    • 21. 发明授权
    • Fixing apparatus with current control to heater
    • 具有电流控制加热器的固定装置
    • US07321738B2
    • 2008-01-22
    • US11215972
    • 2005-09-01
    • Hajime KajiToshifumi KakutaniSatoru IshikawaKazunori MiyakeSatoru Kanno
    • Hajime KajiToshifumi KakutaniSatoru IshikawaKazunori MiyakeSatoru Kanno
    • G03G15/20
    • G03G15/2039G03G15/80G03G2215/2016G03G2215/2035
    • A fixing apparatus has a first heating member and a second heating member provided in a heating portion, and a current control unit which controls an AC current to be supplied to the heating portion, The current control unit executes a wave number control, on the AC current supplied to the heating portion, in a unit of predetermined number of half-waves so that an AC current to the first heating member is supplied in a positive-negative symmetrical pattern in the unit of predetermined number of half-waves; an AC current to the second heating member is supplied in a positive-negative symmetrical pattern in the unit of predetermined number of half waves; AC currents to the first and second heating members are supplied in a positive-negative symmetrical pattern in total in the unit of predetermined number of half-waves and the current control unit increases the duty ratio alternately for the first heating member and the second heating member.
    • 定影装置具有设置在加热部分中的第一加热构件和第二加热构件,以及控制向加热部供应的AC电流的电流控制单元。 电流控制单元以预定数量的半波为单位对提供给加热部的AC电流执行波数控制,使得以正负对称图案供给到第一加热构件的AC电流 预定数量的半波的单位; 以预定数量的半波为单位以正负对称图案供给到第二加热构件的AC电流; 以第一加热构件和第二加热构件交替地向第一加热构件和第二加热构件提供的交流电流总共以预定数量的半波为单位以正负对称图案供给,并且电流控制单元交替地增加占空比 。
    • 25. 发明申请
    • Image forming apparatus and image forming method
    • 图像形成装置及图像形成方法
    • US20060051118A1
    • 2006-03-09
    • US11215972
    • 2005-09-01
    • Hajime KajiToshifumi KakutaniSatoru IshikawaKazunori MiyakeSatoru Kanno
    • Hajime KajiToshifumi KakutaniSatoru IshikawaKazunori MiyakeSatoru Kanno
    • G03G15/20
    • G03G15/2039G03G15/80G03G2215/2016G03G2215/2035
    • The invention provides a fixing apparatus fixing apparatus having a heating portion for heat fixing an unfixed developer borne on a recording material, including: a first heating member and a second heating member provided in the heating portion; and a current control unit which controls an AC current to be supplied to the heating portion; wherein the current control unit executes a wave number control, on the AC current supplied to the heating portion, in a unit of N half-waves in such a manner that: an AC current to the first heating member is supplied in a positive-negative symmetrical pattern in the unit of N half-waves; an AC current to the second heating member is supplied in a positive-negative symmetrical pattern in the unit of N half-waves; and AC currents to the first and second heating members are supplied in a positive-negative symmetrical pattern in total in the unit of N half-waves.
    • 本发明提供了一种具有加热部分的定影装置定影装置,该加热部分用于将固定在记录材料上的未固定显影剂热定影,包括:设置在加热部分中的第一加热部件和第二加热部件; 以及电流控制单元,其控制要供给到所述加热部的AC电流; 其中,所述电流控制单元以提供给所述加热部分的AC电流以N个半波为单位执行波数控制,使得:向所述第一加热构件提供的AC电流为正负值 以N半波为单位的对称图案; 以N个半波为单位以正负对称图案供给到第二加热构件的AC电流; 并且以N个半波为单位,总共以正负对称图案供给到第一和第二加热构件的AC电流。