ORGANIC OPTICAL RECORDING MEDIUM AND REWRITING PREVENTION METHOD THEREOF

摘要

PURPOSE: An organic optical recording medium is provided to reduce the using amounts of a pigment to improve reflectivity as well as to decrease a cost, so as to enhance durability by a cross-linking of a hardening layer to prevent a rewriting. CONSTITUTION: A recording layer is composed of a near infrared absorption pigment capable of absorbing a laser to generate heat. A hardening layer having a thermosetting resin or an optical setting resin on an oligomer is formed on an upper or lower side of the recording layer. During a writing process, the hardening layer is partially hardened by heat generation of the pigment of the recording layer. After completing the writing process, an unhardened part of the hardening layer is completely hardened by heat or light.