| 摘要 |
PROBLEM TO BE SOLVED: To simply obtain a high recorded contrast (modulation) for an optical recording medium that has recording layer on a plate having a pre-groove at least, and provide its recording method. SOLUTION: (1) This optical recording medium has a recording layer on a plate having a pre-groove at least, and forms a recorded section changing in width of the pre-groove by irradiating a laser beam, and is characterized in that the recorded section is formed by enlarging the width of the groove bottom against the opening width of the groove on the plate. (2) This recording method is a recording method on an optical recording medium having a recording layer on a plate having a pre-groove at least, and forms a recorded section changing in width of the pre-groove by irradiating a laser beam, and featured in that the recorded section is formed by enlarging the width of the groove bottom against the opening width of the groove on the plate. |
