发明申请
US20140341625A1 FIXING DEVICE, IMAGE FORMING APPARATUS, AND FIXING METHOD 有权
固定装置,图像形成装置和固定方法

FIXING DEVICE, IMAGE FORMING APPARATUS, AND FIXING METHOD
摘要:
A fixing device includes a fixing rotator heated by a heater and a pressing rotator pressed against the fixing rotator to form a fixing nip therebetween, through which a recording medium bearing a toner image is conveyed. A heat shield interposed between the heater and the fixing rotator is movable in a circumferential direction of the fixing rotator to shield the fixing rotator from the heater in a variable axial shield span of the fixing rotator. The fixing rotator performs fixing rotation to convey the recording medium through the fixing nip while heating the recording medium and supplemental rotation other than fixing rotation. The heat shield moves to a decreased shield span position where the heat shield shields the fixing rotator from the heater in a decreased axial shield span of the fixing rotator during supplemental rotation thereof.
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