| 摘要 |
A fixing device for thermally fixing a developing agent image to a sheet includes: a flexible tubular member having an inner peripheral surface defining an internal space; a heater disposed at the internal space; a nip member disposed at the internal space and configured to be in sliding contact with the inner peripheral surface of the flexible tubular member; a backup member nipping the flexible tubular member in cooperation with the nip member; a stay disposed at the internal space to support the nip member; and a cover disposed at the internal space and covering the stay, one of the stay and the cover being provided with a hook portion, and remaining one of the stay and the cover being provided with an engaged portion engaged with the hook portion.
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