Patent ID: 7210924

Claim:
A vertical heat treatment system having a holder supporting mechanism comprising: a holder mounting table for mounting thereon a holder for holding a plurality of objects to be heat-treated, in a stacked state, the holder being configured such that each of the plurality of objects is disposed horizontally in said stacked state, the holder further having a bottom plate in which is formed a plurality of cut-outs, the bottom plate being provided horizontally and mounted on the holder mounting table horizontally; and a holder position adjusting mechanism for adjusting the holder in a horizontal plane, including a plurality of protruding portions corresponding to the shape of a bottom plate of the holder, and a distance varying mechanism for varying the distance between the plurality of protruding portions, wherein the plurality of protruding portions can enter said plurality of cut-outs formed in the bottom plate of the holder for adjusting a position of the holder on a basis of a correspondence to the cut-outs.