发明名称 |
REWRITABLE OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING METHOD |
摘要 |
A rewritable optical recording medium includes a substrate and a phase-change type recording layer. A portion in a crystalline state corresponds to an unrecorded or erased state, and a portion in an amorphous state correspond to a recorded state, to record EFM modulated information by forming amorphous marks by irradiating the recording layer with a recording laser beam, and the recording is carried out by irradiating a recording laser beam having a wavelength of about 780 nm through an optical system having a numerical aperture NA of 0.5 or 0.55, at 24-times velocity or 32-times velocity of the reference velocity.
|
申请公布号 |
US2007159945(A1) |
申请公布日期 |
2007.07.12 |
申请号 |
US20070684942 |
申请日期 |
2007.03.12 |
申请人 |
MITSUBISHI KAGAKU MEDIA CO., LTD. |
发明人 |
OHNO TAKASHI;KUBO MASAE;HORIE MICHIKAZU;MIZUNO MASAAKI;HOSHINO HIROYUKI;OKAMURO AKIO |
分类号 |
G11B7/0045;G11B7/006;G11B7/125;G11B7/24;G11B7/243;G11B7/26 |
主分类号 |
G11B7/0045 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|