STAMPER, IMPRINTING METHOD, AND METHOD OF MANUFACTURING AN INFORMATION RECORDING MEDIUM

• Main Authors: SHIMAKAWA KAZUYA, HATTORI KAZUHIRO
• Format: Patent
• Language: English
• Published: 17.05.2007
• Subjects: APPARATUS SPECIALLY ADAPTED THEREFOR; CHEMICAL SURFACE TREATMENT; CHEMISTRY; CINEMATOGRAPHY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTROGRAPHY; HOLOGRAPHY; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MATERIALS THEREFOR; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; MICROSTRUCTURAL TECHNOLOGY; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NANOTECHNOLOGY; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; ORIGINALS THEREFOR; PERFORMING OPERATIONS; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTUREOR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING

A stamper has stamper-side concave/convex patterns formed thereupon and is capable of manufacturing an information recording medium on which data track patterns and servo patterns are formed by concave/convex patterns. A plurality of types of convex parts with different heights from a reference plane, which is set between a front surface and a rear surface of the stamper, to protruding ends of the convex parts are formed in the stamper-side concave/convex patterns. Second convex parts, at least one part of which has the height that is higher than the height of a highest first convex part out of the convex parts formed in regions corresponding to the data track patterns, are formed in regions corresponding to the servo patterns.