Patent ID: 7707965

Claim:
A plasma processing apparatus comprising: a process container configured to accommodate a target object; a plasma process mechanism configured to perform a predetermined process under vacuum on a target object inside the process container; an openable/closable lid disposed on the process container; and an opening/closing mechanism configured to open/close the lid, wherein the opening/closing mechanism includes a hinge structure swingably coupling the lid to one end of the process container, and a drive structure configured to swing the lid, such that the hinge structure includes, a support member attached to the process container, a main shaft rotatably supported by the support member and configured to be driven by the drive structure and to serve as a rotation axis of the lid, a joint member fixed to the main shaft, an adjusting shaft rotatably supported by the joint member and configured to serve as an axis for adjusting an angle of the lid relative to the joint member, a coupling member fitted on the adjusting shaft and attached to the lid, and a position adjusting device configured to adjust a position of the coupling member relative to the adjusting shaft, wherein the position adjusting device comprises a positioning screw disposed between the adjusting shaft and the coupling member and configured to set a position of the coupling member relative to the adjusting shaft, a projecting portion integratedly disposed on the coupling member and extending toward the joint member from a side of the coupling member opposite to the lid, and an adjusting member disposed between the joint member and the projecting portion and configured to set a position of the projecting portion relative to the joint member and thereby to contribute to positioning of the coupling member.