Patent ID: 7947215
Filing Date: 2011-05-24
Classification: C21D

Abstract:
1. A heat treatment apparatus for successive heat treatment of substrates, comprising: a hot plate portion for subjecting the substrate to which a coating liquid is applied to heat treatment; a cooling plate for cooling said substrate; a drive mechanism for moving said cooling plate between a home position where said substrate is passed between said cooling plate and an external transfer mechanism and a position above said hot plate portion where said substrate is passed between said cooling plate and said hot plate portion; a heating mechanism for heating said cooling plate; a temperature detection portion for detecting a temperature of said cooling plate; a control unit outputting a control signal for controlling an amount of heat received by said cooling plate from said heating mechanism such that a temperature value detected by said temperature detection portion is set to a prescribed temperature before start of successive treatment of said substrate, said control unit outputting said control signal such that a surface temperature of said cooling plate immediately before reception from said hot plate portion of said substrate to be treated first after start of the successive treatment of said substrates and a surface temperature of said cooling plate immediately before reception from said hot plate portion of said substrate to be treated second are brought closer to each other; and a cooling mechanism for forcibly cooling said cooling plate, wherein said cooling mechanism cools said cooling plate by blowing a gas through a discharge port provided above the cooling plate at the home position during cooling of said cooling plate.