| 摘要 |
There is provided a fixing device for thermally fixing a developing agent image to a sheet. The fixing device includes a tubular flexible member, a nip member, a backup member and a restricting member. The tubular flexible member has an inner peripheral surface defining an internal space and an outer peripheral surface opposite to the inner peripheral surface, the tubular flexible member defining an axis extending in an axial direction. The nip member is disposed within the internal space. The backup member is configured to provide a nip region in cooperation with the nip member for nipping the tubular flexible member between the backup member and the nip member. The restricting member is configured to restrict the tubular flexible member from moving in the axial direction, the restricting member having a base section, an inner guide protruding inward from the base section in the axial direction for guiding the inner peripheral surface and an outer guide protruding inward from the base section in the axial direction for guiding the outer peripheral surface, the inner guide having a portion whose protruding end is positioned inward of a protruding end of the outer guide in the axial direction.
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