| 摘要 |
PURPOSE:To obtain a high density optical recording medium which can erase recorded information and can be used repeatedly by forming a monomolecular film of one kind of photopolymerizable monomer having hydrophilic and hydrophobic groups and at least one unsatd. bond in a molecule or a built-up film consisting of such monomolecular layers on a substrate as a recording layer. CONSTITUTION:A monomolecular film of one kind of photopolymerizable monomer having hydrophilic and hydrophobic groups and at least one unsatd. bond in a molecule or a built-up film consisting of such monomolecular layers is formed on a substrate as a recording layer. The photopolymerizable monomer is represented by formula 1, 2 or 3. In the formula 1 and 3, R1 or R1 and R2 have both hydrophilic and hydrophobic moieties, or R1 is hydrophobic in relation to R2, and R2 is hydrophilic in relation to R1. In the formula 2, one among R1, R2 and R3 has both hydrophilic and hydrophobic moieties, or one among R1, R2 and R3 is hydrophobic in relation to the others, and one of the others is hydrophilic. |
