Patent ID: 7267128

Claim:
A substrate treating apparatus for treating substrates, comprising: a treating tank for receiving and treating the substrates; cantilever-type holding means attached to an upper position of a main column through a mounting member to be movable, while holding the substrates, between a treating position in said treating tank and a transfer position above said treating tank; transport means for supporting the substrates and transferring the substrates to and from said holding means in said transfer position; detecting means for detecting a posture variation of said holding means; and correcting means for correcting a position of said holding means; wherein said correcting means performs a correction according to the posture variation of said holding means detected by said detecting means in time of transfer of the substrates between said holding means and said transport means; and wherein said correcting means includes: a through hole formed in said mounting member constituting a cantilever proximal portion of said holding means; a rigid member inserted into said through hole; and positioning means attached to said mounting member for moving said holding means, by using said rigid member, in an opposite direction to a direction of movement of a cantilever point of said holding means; said positioning means including an actuator having a working piece movable into and out of an opening of said through hole to act on said rigid member.