OPTICAL INFORMATION RECORDING MEDIUM

摘要

PURPOSE:To improve the adhesiveness to the glass substrate of an optical information recording medium and to improve the recording sensitivity by providing a linear acrylic resin contg. specific atomic groups as a repeating unit as an underlying layer between the substrate and recording layer of said medium. CONSTITUTION:The linear acrylic resin contg. the atomic groups expressed by formula I as the repeating unit such as the copolymer resin of methyl methacrylate and methyl acrylate is dissolved in a suitable solvent and the soln. is coated to 0.001-10mu thickness by a method such as dip coating on the glass substrate directly or after treatment with a coupling agent to form the underlying layer thereon. The recording layer of various kinds such as boring type, phase transition type or magneto-optical type is formed thereon, by which the adhesiveness to the glass substrate is improved and the recording sensitivity at the time of recording by laser light is improved.