PRODUCTION OF INFORMATION RECORDING MEDIUM

摘要: PURPOSE:To produce easily with high accuracy an information recording medium, by irradiating selectively the laser light to surface side of a substrate obtain cross sectional form corresponding energy distribution light. CONSTITUTION:A photoresist 31 is applied on disk 30 glass, acrylic resin, etc., and 32 having density approximated Gauss irradiated resist 31. Both intensity thickness are controlled group 33 at area beam as shown B after development. In this case, revolved constant speed while shifting optical system precisely, can be formed entire 30. such way, mother 34 obtained. The plating nickel, etc. stamper 35 C. Thus it possible directly from 34. This eliminates etching process,