Film transfer tool

A film transfer tool comprising:

• a case main body;
• a supply bobbin drive shaft provided in the case main body and configured to drive a supply bobbin around which an unused transfer tape is wound;
• a take-up bobbin drive shaft provided in the case main body and configured to drive a take-up bobbin around which a used portion of the transfer tape is wound;
• a rotational coupling mechanism configured to couple the supply bobbin drive shaft and the take-up bobbin drive shaft together rotationally;
• and
• a reverse rotation preventive mechanism configured to prevent a reverse rotation of the rotational coupling mechanism,
• wherein the reverse rotation preventive mechanism has:
• a rolling gear configured to be coupled to a rotational system made up of the supply bobbin drive shaft, the take-up bobbin drive shaft and the rotational coupling mechanism;
• a moving gear disposed so as to move over a predetermined range defined around the rolling gear and configured to mesh with the rolling gear;
• and
• a locking projection disposed to confront a reverse rotating direction of the rolling gear and configured to lock the moving gear.