Optical recording medium with prepit areas having reflectivity higher than land areas

An optical recording medium comprising:

• a substrate;
• a groove portion, having a plurality of grooves, provided on said substrate;
• a land portion provided on said substrate and disposed between the grooves of said groove portion;
• a prepit portion comprising a recess formed in said land portion;
• an antireflection film laminated on said substrate;
• and
• a recording layer laminated on said antireflection film,
• wherein a reflectivity in a bottom portion of said prepit portion is higher than that of a surface of said land portion due to a difference between a thickness of said antireflection film on said prepit portion and on said land portion.

An optical recording medium comprising:

• a substrate;
• a pair of grooves formed in said substrate;
• and
• a land area provided on said substrate and disposed between said pair of grooves, said land area having therein a recess formed in said substrate, the recess being a prepit and a bottom of the prepit having a higher reflectivity than a surface of said land portion.