Patent ID: 8303714

Claim:
A plasma chemical vapor deposition (CVD) apparatus for forming a film on a surface of a substrate while continuously carrying the substrate within a vacuum chamber, comprising: a pair of deposition rolls disposed oppositely in parallel or substantially in parallel to each other so that the substrate wound thereon faces each other; a magnetic field generating member provided inside each of said deposition rolls, which generates, in the vicinity of a roll surface thereof facing a space between said deposition rolls, a magnetic field swollen from said roll surface to a roll surface on the other side of the space; a plasma power source with polarity alternately reversing between one electrode and another electrode; a gas supplier for supplying a film-forming gas to said space between said deposition rolls; and an evacuator for evacuating said space between said deposition rolls, wherein the one electrode of said plasma power source is connected to one of the rolls of said pair of deposition rolls, and the another electrode is connected to the other of the rolls of said pair of deposition rolls.