| 摘要 |
PURPOSE:To make the exact realization of skew prevention by a simple structure possible, by a method wherein some one of at least two rollers constituting a guide roller are so related with each other that each is independently rotated. CONSTITUTION:A guide roller 10 bears two rollers 11 in a rotatable manner a shaft 13 via bearings 12 respectively. Thus, even though the unbalance of skin friction coefficient, outside diameter, pressure, etc. exists between the rollers 11 with each other, the skew of printing paper can be simply prevented. |
