Patent AT-E400052-T1: [Translated] MEDIUM FOR OPTICAL DATA STORAGE AND METHOD FOR OPTICAL DATA STORAGE

An optical information-recording medium, which comprises a substrate having provided thereon a recording layer capable of recording information by laser beam irradiation, wherein said recording layer contains a naphthol compound represented by the following formula (I): <CHEM> wherein R represents a monovalent substituent other than a hydroxyl group and a SO3<-> group; m represents an integer of from 1 to 4; n represents an integer of from 0 to 7; and p represents an integer of from 0 to 7, provided that m + n + p is 8 or less, when n represents an integer of 2 or more, a plurality of R groups may be the same or different, and when m = p = 2, two hydroxyl groups are not substituted at the 1- and 5-positions or at the 1- and 8-positions at the same time.