Optical information recording medium

摘要

The present invention relates to an optical information recording medium of a recordable type comprising a substrate having the pregrooves (11) and a dye-containing recording layer (2) formed on the substrate (1) and an optical information recording medium of a hybrid type including a read-only area and a recordable area, and the object thereof is to reduce the crosstalk rate and improve the jitter value by improving the shape of pregrooves (11) in the recordable area. The optical information recording medium comprises a disc-shaped substrate (1) in which pregrooves (11) and lands (12) are formed, a dye-containing recording layer (2) in which pits (31) can be formed by irradiation of a laser beam so as to record information, and a reflective layer (3) formed on the dye-containing recording layer (2) or formed between the substrate (1) and the dye-containing recording layer (2), wherein rims (13) having a projection-like section are formed along both side edges of each pregroove (11) of said substrate (1).