Patent ID: 7754015

Claim:
A vacuum vapor-deposition apparatus in which a base film fed from a feed roll is guided in a vacuum from a feed guide roll to a coating roll, a vapor-deposited layer is formed on the base film wrapped around the coating roll, forming a vapor-deposited film, and the vapor-deposited film is taken up around a takeup roll, while a takeup guide roll is holding the vapor-deposited layer of the vapor-deposited film guided from the coating roll, the apparatus comprising: synchronizing means which is configured to equalize a circumference velocity v 1 of the coating roll and a circumference velocity v 2 of the takeup guide roll, thus v 1 =v 2 the circumference velocity of the coating roll is equal to the circumference velocity of the takeup guide roll, wherein the takeup guide roll is a tendency roll; the synchronizing means includes a first pulley, which rotates around an axis of the coating roll, a second pulley, which rotates around an axis of the takeup guide roll, a belt, which transmits rotation of the first pulley to the second pulley, and a plurality of ball bearings, each contacting an outer circumferential surface of the second pulley and an inner circumferential surface of the tendency roll, and the tendency roll receives a force of the second pulley that is rotating, via the ball bearings.