Patent ID: 7204188
Filing Date: 2007-04-17
Classification: G11B

Abstract:
1. A method of manufacturing a stamper for manufacturing an information medium, comprising the steps of: manufacturing a photoresist master by forming at least a light absorption layer and a photoresist layer, in that order, on top of a substrate, irradiating light onto said photoresist layer to form a latent image from an opposite surface to that which contacts said light absorption layer, and then developing said latent image to form an uneven pattern; forming a thin metal film on top of said uneven pattern of said photoresist master; forming a stamper by forming a metal film on top of said thin metal film, and separating said thin metal film and said metal film from said photoresist master; and providing a metal catalyst on a surface of said uneven pattern after manufacturing the photoresist master, activating said metal catalyst, and then washing the surface of said uneven pattern on which said metal catalyst is provided with a liquid, as preliminary treatments to the step of forming said thin metal film on said photoresist layer.