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    • 7. 发明申请
    • FIXING DEVICE
    • 固定装置
    • US20110236084A1
    • 2011-09-29
    • US13053572
    • 2011-03-22
    • Satoshi NishidaKenichi OgawaMasashi TanakaShuichi TetsunoShogo Kan
    • Satoshi NishidaKenichi OgawaMasashi TanakaShuichi TetsunoShogo Kan
    • G03G15/20
    • G03G15/2064G03G21/1638G03G2215/00413G03G2215/2019G03G2221/1675
    • A fixing device for fixing on a recording material a toner image formed on the recording material includes a fixing roller; a heating member for heating the fixing roller in contact with a surface of the fixing roller; and a pressing member for forming a fixing nip between itself and the fixing roller, wherein the recording material on which the toner image is formed is subjected to fixing by being nipped and conveyed in the fixing nip. When the recording material which has been jammed is removed by pulling a trailing end of the recording material in a winding jam state in which a leading end of the recording material has passed through the fixing nip to reach a contact portion between the heating member and the fixing roller, a drawing force F1 for drawing the recording material, toward an upstream side with respect to a rotational direction of the fixing roller, nipped in the fixing nip between the fixing roller in rest state and the pressing member and a drawing force F2 for drawing the recording material, toward the upstream side with respect to the rotational direction of the fixing roller, nipped between the fixing roller in the rest state and the heating member are set so that the drawing force F2 is not more than the drawing force F1 so as to prevent the fixing roller from being tightened by the recording material.
    • 用于在记录材料上固定形成在记录材料上的调色剂图像的定影装置包括定影辊; 加热构件,用于加热与定影辊的表面接触的定影辊; 以及用于在其与定影辊之间形成定影辊隙的按压构件,其中通过在定影辊隙中夹持和输送其上形成调色剂图像的记录材料进行定影。 当通过在记录材料的前端已经通过定影辊隙的牵引阻塞状态下拉动记录材料的尾端来移除已经卡住的记录材料,以到达加热构件和 定影辊,用于拉伸记录材料的拉拔力F1朝向相对于定影辊的旋转方向的上游侧夹持在夹持在静止状态的定影辊和按压构件之间的定影辊隙中,并且夹紧力F2用于 将记录材料相对于定影辊的转动方向的上游侧拉动,夹持在处于静止状态的定影辊与加热部件之间,使得拉拔力F2不大于拉拔力F1 以防止定影辊被记录材料紧固。