Optical information recording medium and stamper

An optical information recording medium comprising:

• a substrate including tracking pregrooves formed in a recording area, pits formed in a clamping area, and a reflective layer laminated on the pits and the pregrooves;
• and
• a dummy substrate being attached to the substrate through an adhesive layer formed on the reflective layer and including a printable layer formed on a label surface on the opposite side of the adhesive layer so as to cover portions corresponding to the recording area and the clamping area,
• wherein a plurality of the pits are formed substantially in an entire region of the clamping area so as to enable display of label information.

An optical information recording medium formed by attaching a dummy substrate onto a recording and reproducing substrate through an adhesive layer,

• the substrate comprising:
• a recording area including tracking pregrooves;
• and
• a clamping area including first pits formed shallower than a groove depth of the pregrooves for displaying label information, and second pits for enhancing adhesion to the dummy substrate, and
• the dummy substrate comprising:
• a printable layer formed on a label surface on the opposite side to the adhesive layer so as to cover portions corresponding to the recording area and the clamping area.

A stamper for molding a substrate of an optical information recording medium provided with a printable layer covering portions corresponding to a clamping area and a recording area on a label surface,

• the stamper comprising:
• pit indents formed at the portion corresponding to the clamping area;
• and
• pregroove indents being formed at the portion corresponding to the recording area provided on an outer peripheral side of the clamping area and having a different shape from the pit indents.