Patent ID: 6438074
Filing Date: 2002-08-20
Classification: G11B

Abstract:
An optical recording medium manufacturing master recording apparatus comprising:a revolving base on which a substrate coated with a resist thereon is placed and which revolves said substrate, an irradiating mechanism for converging and irradiating a recording light beam or a recording electron beam on said resist, an elevator mechanism configured to move said irradiating mechanism in an opposing portion of said substrate in a vertical direction relative to said revolving base and in a surface direction which is perpendicular to the vertical direction, and a height position displacement mechanism which interposes between said irradiating mechanism and said elevator mechanism, wherein:said irradiating mechanism is connected to said elevator mechanism through said height position displacement mechanism, said irradiating mechanism has such a structure in which at least a converging lens system and a displacement driving mechanism for adjusting a focus of the recording beam are supported by a gas static pressure pad housing, in said gas static pressure pad housing, a gas feeding pad is disposed facing a bottom surface opposing said substrate, and p1 gas is fed between said irradiating mechanism and said substrate through said gas feeding pad.