| 摘要 |
<p>PURPOSE:To previously prevent bad transferring when a toner image is transferred on a back surface on a both-side printing device in which a paper is turned over and carried to a transferring part again and the toner image is transferred also on the back surface of the paper after the surface of the paper is printed by improving a paper carrying roller which is set just behind a thermal fixing device as to a paper carrying mechanism on the both-side printing device. CONSTITUTION:A paper carrying roller 28 which is set just behind the thermal fixing device is constituted of a roller shaft 25 and a roller part 29 constituted of rubber and resin, etc., provided on an outer periphery of the roller shaft 25, and the roller part 29 is provided at least over the entire width P of the paper 27, and also is constituted in a state where an outside diameter is the same size over entire length, and the entire surface P of the paper 27 contacts to the roller part 29 of the carrying roller 28.</p> |
