OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING METHOD OF OPTICAL RECORDING MEDIUM

摘要

An extremely high-density optical recording medium having excellent record reproducing characteristics is provided by using a board which can be stably formed and has a relatively shallow groove depth. An optical recording medium (20), which is of film surface incidence type and is provided by successively stacking a reflecting layer (23), a recording layer (22) containing a pigment as a main component, and a cover layer (24), on a board (21) whereupon a guide groove is formed. In the optical recording medium (20), a guide groove part far from an incidence plane of the cover layer (24) where a record reproducing beam (27) enters is permitted to be a recording groove part, the reflecting light intensity of a recording pit part formed in the recording groove part increases by phase change to be higher than the reflecting light intensity before recording.