Patent ID: 6541186
Filing Date: 2003-04-01
Classification: A63F,G11B,Y10S

Abstract:
A method of manufacturing an optical disk comprising:a first masking step of covering a portion of an optical disk substrate, excluding a first area, with a masking material; a step of forming an alloy layer, which includes an optomagnetic material, on the substrate masked by the first masking step; a first masking removing step of removing the masking material and overlying optomagnetic material from the substrate formed with the alloy layer; a second masking step of covering a portion of the substrate, excluding a second area which is different from the first area, with a masking material; a step of forming a dyestuff layer, which changes with heat, on the substrate masked by the second masking step; a second masking removing step of removing the masking material and overlying dyestuff from the substrate formed with the dyestuff layer; and a step of forming a reflecting layer on the alloy layer in the first area and the dyestuff layer in the second area.