Optical information recording medium

An information recording method comprising

• providing an phase-change optical information recording medium in which information can be recorded, reproduced and rewritten, said medium comprising a first transparent substrate having a wobbling groove which is spirally formed thereon at a pitch;
• a first dielectric layer located overlying the first transparent substrate and having an optical thickness of from 80 nm to 200 nm;
• a phase-change recording layer located overlying the first dielectric layer and having an optical thickness of from 20 nm to 50 nm when the phase-change recording layer is in an erased state;
• a second dielectric layer located overlying the phase-change recording layer and having an optical thickness of from 10 nm to 70 nm;
• a reflection layer located overlying the second dielectric layer;
• and a second transparent substrate located overlying the reflection layer;
• and
• recording a record mark in the phase-change recording layer, wherein the record mark has a width of from 0.9 to 1.5 times that of a width of the wobbling groove.