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    • 31. 发明申请
    • Optical recording medium and information-recording method
    • 光记录介质和信息记录方法
    • US20050094546A1
    • 2005-05-05
    • US10978735
    • 2004-11-02
    • Kazutoshi KatayamaYoshihisa Usami
    • Kazutoshi KatayamaYoshihisa Usami
    • G11B7/0045G11B7/007G11B7/248G11B7/24
    • G11B7/00736G11B7/0045G11B7/248
    • The present invention relates to an optical recording medium including a recording layer in which major information and sub-information are recorded, wherein the sub-information is recorded with the use of a long-wavelength laser light having a wavelength longer by 30 nm or more than a short-wavelength laser used to record the major information, and an area where the sub-information is recorded has a level of absorbance of the long-wavelength laser light of 0.05 or more. The invention also relates to an information recording method using the optical recording medium including a recording layer in which major information and sub-information are recorded, wherein the major information is recorded with the use of a short-wavelength laser light having a wavelength of 500 nm or less, and the sub-information is recorded with the use of the long-wavelength laser.
    • 本发明涉及一种包括其中记录主要信息和子信息的记录层的光学记录介质,其中使用波长更长30nm或更长的长波长激光记录子信息 比用于记录主要信息的短波长激光,并且记录子信息的区域具有0.05以上的长波长激光的吸光度。 本发明还涉及使用包括记录主要信息和子信息的记录层的光记录介质的信息记录方法,其中使用波长为500的短波长激光记录主要信息 nm以下,利用长波长激光记录子信息。