Phase-change optical recording medium and recording and reproducing method thereof

A phase-change optical recording medium comprising:

• a substrate, and
• at least a recording layer composed of a phase-change material disposed on the substrate,
• wherein a maximum recording linear velocity VH of the phase-change optical recording medium is 20 m/s to 60 m/s,
• wherein a range of linear velocity of the phase-change optical recording medium recordable even when the recording linear velocity is continuously changed is 0.3VH to 1.0VH, and
• wherein jitter is less than 12% and reproduction error is 350 or less when 10 repeated recordings are performed.

A recording and reproducing method of a phase-change optical recording medium comprising:

• amorphousizing of a recording layer for recording of information and crystallizing of the recording layer for erasing of information by irradiating the phase-change optical recording medium comprising at least the recording layer with a laser beam,
• wherein a maximum recording linear velocity VH is 20 m/s to 60 m/s,
• wherein a range of linear velocity recordable even when the recording linear velocity is continuously changed is 0.3VH to 1.0VH, and
• wherein there is no occurrence of a crystal causing a reproduction error in a recorded mark.

A recording and reproducing method of a phase-change optical recording medium comprising:

• amorphousizing of a recording layer for recording of information and crystallizing of the recording layer for erasing of information by irradiating the phase-change optical recording medium comprising at least the recording layer with a laser beam,
• wherein a maximum recording linear velocity VH is 20 m/s to 60 m/s,
• wherein a range of linear velocity recordable even when the recording linear velocity is continuously changed is 0.3VH to 1.0VH, and
• wherein jitter is less than 12% and reproduction error is 350 or less when 10 repeated recordings are performed.