| 摘要 |
PURPOSE:To enable recording and reading out in high sensitivity with laser beams to be carried out chemically physically stably by a method wherein a direct-read-after-write optical recording medium is formed by providing a recording layer containing a specific phthalocyanine compound on a substrate. CONSTITUTION:A specific quantity of at least one kind of phthalocyanine compound as give by the formula I is dissolved in a suitable organic solvent to prepare a spreading solution for a recording layer. The solution for recording layer is spread on a base material such as glass, a plastic film, etc., dried to provide a recording layer, and a direct-read-after-write optical recording medium is obtained. In order to improve further stability of light fastness, atmosphere resistance, etc., of the recording layer and stability of repetitive reading out, in the recording layer can be mixed an oxygen quencher, ultraviolet absorbent, etc. Further, the direct-read-after-write recording medium should be preferably composed of a transparent substrate/a recording layer/a reflecting layer/a protective layer. The obtained optical recording medium is chemically physically stable, and will be able to be recorded and read out in high sensitivity with laser beams. |
