| 摘要 |
An off-line image fixing apparatus includes a feed sensor disposed at the center of a paper inlet for sensing the presence of a sheet of copying paper, and a controller for forwardly driving a paper conveyor, which is in a normal state continuously driven backwardly in accordance with a paper sensing signal from the feed sensor. Thus a sheet of copying paper can be inserted from only the central portion of the paper inlet, so that a sheet of copying paper inserted from the paper inlet and conveyed to the heating unit passes necessarily over a paper jam sensor disposed in the center of the conveyance passageway.
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