Optical recording media and their manufacturing method

Abstract

Abstract PURPOSE:To obtain an optical recording medium such as an excellent optical disc on which no exfoliation is caused even if it is left for a long time under a high moisture environment while the bonding process is executed efficiently in a short time by adhering a plastic film on the entire one side of which an adhesives is applied onto a transparent base formed with an optical recording film. CONSTITUTION:The plastic film 7 coated with the adhesives 8 on its entire face is adhered onto the transparent base 5 formed with the optical recording film 6. The thickness of the plastic film 7 is decided by the performance of work and the thickness of <=0.5mm. is handled easily. In using a plastics as the transparent base 5, the thermal expansion coefficient of the plastic film 7 due to temperature and moisture is preferably 80-120% of that of the base 5. It is preferred that the adhering is executed by means of a rubber roller or under a reduced pressure in order to prevent air bubbles from being produced between the recording film 6 and the adhesives 8 at adhering.

Inventors

• 👤 Hideaki Mochizuki
• 👤 望月　秀晃
• 👤 Toru Tamura
• 👤 徹 田村

Bibliographic Details