| 摘要 |
<p>PROBLEM TO BE SOLVED: To depends on no difference in gripping force between transporting rollers or deflected transfer paper and evolve no overload on driving sources, no damage to the transfer paper, and no abnormal sound in switching to a different transporting speed with the transfer paper grasping by means of the two transporting rollers for transportation. SOLUTION: An image forming device is provided with a plurality of stepping motors SMa, SMb serving as driving sources for driving a plurality of transporting rollers 182a, 183a, respectively, and a driving control means 170 for switching the transporting speed of transfer paper with one sheet of the transfer paper grasping between the plurality of transporting rollers using different driving sources, respectively. The driving control means carries out driving and control by changing driving frequencies in accelerating and decelerating the plurality of stepping motors based on the same pattern.</p> |
