| 摘要 |
A belt unit installed apparatus includes an apparatus frame; a belt unit attached to the apparatus frame, said belt unit having a first roller, a second roller, a belt placed between the first roller and the second roller, and a belt frame for supporting the first roller and the second roller; an engaging member disposed on the belt frame for engaging the apparatus frame; a receiving portion formed in the apparatus frame for engaging the engaging member; and an urging member disposed on the apparatus frame for urging the engaging member. The engaging member maintains an engagement state relative to the receiving portion when the engaging member engages the receiving portion.
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