| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily align a transfer roller, a pressure roller and a transfer roller, and to soften a shock generated when the rollers come into contact with each other by providing a driving means for moving forward and backward the transfer roller which is selectively brought into contact with and separated from a backup roller and the pressure roller. SOLUTION: At the time of printing, a transfer roller 103 moves forward between a backup roller 113 and a pressure roller 102. That is, when a rotary disc 135 is turned at a designated angle by a motor, a crankshaft 133 makes a circular motion, so that a support table 123 advances. Accordingly, the transfer roller 103 advances between the backup roller 113 and the pressure roller 102 to come into contact with the rollers. At this time, it is desirable to suitably control the pressing force of the transfer roller 103 in such a manner that the repulsive force between the pressure roller 102 and the transfer roller 103 is equal to the repulsive force between the transfer roller 103 and the backup roller 113.</p> |
