Information recording medium

Abstract

Abstract PURPOSE:To obtain a recording medium with which recording and reproducing are performed by the laser beam irradiated from the base plate side and which has excellent sensitivity, etc. by forming a metallic layer having high transmittance to laser light on the base plate and forming a low melting metallic layer which alloys easily with the metallic layer by absorbing laser light on said metallic layer. CONSTITUTION:The 1st metallic layer 7 of Sb2Se3, etc. having high light transmittance on a transparent base plate 3 having guide grooves 5. A low melting metallic layer 8 of BiTe, etc. which alloys easily with the metal of the layer 7 by absorbing laser light is successively laminated thereon to form a recording layer 6. A transparent layer 9 of chalcogenide glass, etc. and a metallic reflecting layer 10 of Al, Ag, etc. are formed in this order on the layer 6. A laser beam is irradiated from the plate 3 side to perform recording so that the reproduction by the weak beam is made possible. Two sheets of such recording media 2 are joined by using an adhesive agent 4 by which the recording medium 1 permitting use of the two sides is obtd. The recording medium having a high S/N and high resolution when laser light of low energy is used and having excellent durability is thus obtd.

Inventors

• 👤 Yasuaki Nakane
• 👤 中根　靖章
• 👤 Masataka Kitagawa
• 👤 北川　正隆
• 👤 Tadashi Kiyomiya
• 👤 正 清宮
• 👤 Tetsunosuke Yanada
• 👤 簗田　鉄之助

Bibliographic Details