Patent ID: 8900365

Claim:
An apparatus for depositing materials on an elongate substrate, comprising: a vacuum chamber; a supply reel for supplying an elongate substrate in rolled form; a drum rotatably disposed in the vacuum chamber, the drum having a helically-shaped guide groove formed along an outer surface of the drum for receiving the elongate substrate supplied from the supply reel to be wound in the guide groove and to subsequently feed the elongate substrate to a retreat reel to wind thereon upon rotation of the drum; a deposition source material received in the vacuum chamber for depositing a material onto a surface of the elongate substrate which is wound on the drum; and at least one slip-roller disposed adjacent to an outer circumference of the drum and in a longitudinal direction of the drum, the slip-roller at least partially protruding outwardly from an outer surface of the drum and with the elongate substrate surrounding outwardly around a combination of the drum and the slip-roller, the slip-roller being rotated by a driving motor in a moving direction of the elongate substrate such that a portion of the elongated substrate received in the helically-shaped guide groove of the drum is pulled out of contact from the guide groove by the outwardly protruded slip roller to reduce a frictional contact there-between as the elongated substrate is fed upon rotation of the drum and the slip-roller.