Information recording medium

Abstract

Abstract PURPOSE:To improve the precision and quality of a hole while reducing laser power, by providing a plastic film adjacently to a recording layer, and absorbing the deformation stress by the plastic film. CONSTITUTION:On a transparent and plastic substrate 13 of, for example, melamine acryl, etc., which has a <=500mum, a recording layer 14 made of a chalcogenite alloy film, etc., with an about hundreds Angstrom thickness is provided, and on the recording layer 14, a plastic film 15 of fluororubber, etc., with an about several - tens mum thickness is adhered. Consequently, a melted recording layer formed during perforation crushes the soft plastic film to easily move out of the signal hole, so while information is recorded with small laser power, shapes of perforations are uniform and no scatter of the recording layer stays in the signal hole, improving the precision and quantity of holes.

Inventors

• 👤 Koichi Ogawa
• 👤 小川　紘一
• 👤 Shigeru Arai
• 👤 茂 荒井
• 👤 Nagaaki Etsuno
• 👤 越野　長明
• 👤 Seiya Ogawa
• 👤 小川　清也
• 👤 Kyohei Murakawa
• 👤 村川　恭平

Bibliographic Details