| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve workability upon replacement and attachment of a film supply roll and maintainability. <P>SOLUTION: There are provided a powder clutch 14 that puts a brake on rotation of a supply roll axis 13, a first rotary encoder 15 that detects the number of rotations of the supply roll axis 13, a film feeding roller 23 that feeds a transfer film 3 to a film take-up roll, a second rotary encoder 25 that detects the number of rotations of the film feeding roller 23, and a controlling section 11 that controls the powder clutch 14 on the basis of signals from the first and second rotary encoders 15 and 25. The controlling section 11 calculates a roll diameter of the transfer film 3 wound around a film supply roll 12 and controls the number of rotations of the film supply roll 12 by the powder clutch 14 according to the roll diameter, thereby maintaining a constant tension provided to the transfer film 3 between the film supply roll 12 and the film take-up roll 21. <P>COPYRIGHT: (C)2012,JPO&INPIT |
