| 摘要 |
<p>An image forming apparatus includes a feed unit (1), a sensor (430), a control unit (115), a measuring unit (117), and a determining unit (119). The feed unit (1) conveys a sheet P. The sensor (430) detects the sheet P being conveyed. The control unit (115) controls to change the force acting on the sheet from that is in normal conveyance of the sheet. The measuring unit (117) measures a measurement value related to conveyance speed of the detected sheet with the acting force changed. The determining unit (119) determines whether there is an indication of abnormality in conveyance of the sheet on the basis of the measurement value.</p> |
