| 摘要 |
PURPOSE:To obtain a write once optical disk for a CD or CD-ROM excellent in stability and also improved in recording characteristics by successively laminating a recording film containing a specific phthalocyanine compound, a reflecting film and a protective film on a transparent substrate. CONSTITUTION:A predetermined amount of a phothalocyanine compound represented by formula I [wherein X<1>-X<4> are substituents such as an alkyl group, an aryl group, an aralkyl group or an aryloxy group, n<1>-n<4> are an integer of 0-4, M is a metal such as Al or Ga, Z is a group represented by formula II (wherein R<1> and R<2> are an alkyl group or an aryl group) and m is 1 or 2] is dissolved in an org. solvent to prepare a coating solution for a recording film. This coating solution is applied to a transparent substrate made of glass or a synthetic resin and dried to form the recording film. A film of metal such as Au, Al or Co is formed on the recording film by vacuum vapor deposition to form a reflecting film and, subsequently, an ultraviolet curable resin is applied to the reflecting film by spin coating and dried to form a protective film to obtain a write once optical disk. |
