OPTICAL INFORMATION RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide an optical information recording medium which makes high density recording and fast recording possible. SOLUTION: The track pitch Tp of the pregroove is specified to the range of 1.0 μm<=Tp<=1.2 μm and the total balance of the decomposition energy ΔQs of the dye is specified to the range of -100 cal/g<=ΔQs<=250 cal/g.