Patent ID: 7241362
Filing Date: 2007-07-10
Classification: G11B,H01L,Y10S

Abstract:
1. A substrate treatment apparatus comprising: a rotary member having a rotary shaft and a plurality of clamping members which are capable of clamping and unclamping a substrate, the rotary member being rotatable about the rotary shaft; a rotative drive mechanism for applying a torque to the rotary shaft to rotatively drive the rotary member; a non-rotative movable member which is movable parallel to the rotary shaft; a driving mechanism for moving the non-rotative movable member parallel to the rotary shaft; a rotative movable member which is movable parallel to the rotary shaft in association with movement of the non-rotative movable member by a driving force received from the non-rotative movable member and is rotatable together with the rotary member; a movement converting mechanism for converting movement of the rotative movable member into movements of the clamping members of the rotary member; and a controller for operating the driving mechanism so that the substrate is completely or slightly released from the clamping members and then clamped again by the clamping members while the rotary member is rotated by the rotative drive mechanism; wherein the non-rotative movable member is movable parallel to the rotational axis of the rotary shaft, and the rotative movable member is movable parallel to the rotational axis of the rotary shaft, so that both the non-rotatable movable member and the rotative movable member are movable parallel to the rotational axis of the rotary shaft.