Patent ID: 7896968

Claim:
A winding type plasma CVD apparatus for forming a deposition layer on a deposition surface of a film by plasma CVD while said film is made to travel in a vacuum chamber, comprising: an upstream roller and a downstream roller respectively arranged on the upstream side and downstream side of a deposition position with regard to the traveling direction of said film, which make said film travel substantially linearly at said deposition position; a high-frequency electrode facing the deposition surface of said film and connected to a high-frequency power source; a counter electrode arranged on a back side of the deposition surface of said film; a gas feed line for supplying source gas toward the deposition surface of said film; a mask arranged between said high-frequency electrode and said film, said mask having an aperture that limits a deposition area of the deposition surface of said film; a lifting unit having a support bracket for simultaneously moving up and down said upstream roller, said downstream roller, and said mask; wherein the support bracket supports both ends of a rotating shaft of said upstream roller and both ends of a rotating shaft of said downstream roller; wherein engaging clicks are attached to the support bracket and engage said mask; said lifting unit having a first state and a second state, said lifting unit in the first state causing said film to face said high-frequency electrode with a first distance between said film and said high-frequency electrode, said lifting unit in the second state causing said film to face said high-frequency electrode with a second distance between said film and said high-frequency electrode, the second distance being larger than the first distance, said lifting unit being configured for adjusting a distance between said film and said high-frequency electrode between the first state and the second state; a shutter configured for being inserted between the deposition surface of said film and the aperture of said mask when said lifting unit is in the second state, said shutter being connected to ground potential; and wherein after said shutter is inserted between said film and said mask, said lifting unit moves up said mask to a position where said shutter closes the aperture of said mask.