A disk-shaped optical information recording medium comprising a recording layer,
a pressure sensitive adhesive layer or an adhesive layer, and a cover sheet in
this order on a substrate, and having a central hole, a track pitch of 300 to 600
nm and a groove depth of 40 to 150 nm, for recording and playing back information
by being irradiated with a laser light at a wavelength of 500 nm or less, wherein
the substrate and the cover sheet are closely adhered via the pressure sensitive
adhesive layer or the adhesive layer at a region including a portion of an inner
circumference vicinity and an outer circumference vicinity, and the maximum value
for the radial length of the closer adhesion region is at least 0.4 mm.