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2. 发明申请

US20030012115A1 Optical information recording medium, method for manufacturing the same, and initialization device 审中-公开
标题翻译：光信息记录介质，其制造方法和初始化装置
公开(公告)号：US20030012115A1
公开(公告)日：2003-01-16
申请号：US10171239
申请日：2002-06-12
申请人： Matsushita Electric Industiral Co., Ltd.
发明人： Tetsuya Akiyama , Naoyasu Miyagawa , Kenichi Nishiuchi , Takashi Nishihara
IPC分类号： G11B007/135 , G11B007/24
CPC分类号： G11B7/1369 , G11B7/1275 , G11B7/13925 , G11B7/14 , G11B7/24038 , G11B7/268 , G11B2007/0013
摘要： An optical information recording medium includes a plurality of recording layers, a reflectance of at least one of the plurality of the recording layers in a non-initialized state with respect to a light beam for initialization being smaller than a reflectance of the same in an initialized state with respect to the light beam for initialization. The recording layers are initialized by irradiating, among the plurality of recording layers, the recording layer positioned farther from a light beam irradiation side with the light beam prior to irradiating the recording layer positioned closer to the light beam irradiation side, so that the initialized recording layers have no initialization irregularities. In initialization, at a position at a same distance in a radial direction on the optical information recording medium, the recording layer positioned farther from a light beam irradiation side is irradiated with one light beam before the recording layer positioned closer to the light beam irradiation side is irradiated with another light beam so that the plurality of recording layers are initialized at the same time by a light beam projecting operation in which the light beams are focused at different positions. This ensures the initialization without irregularities within a short time.
摘要翻译：光学信息记录介质包括多个记录层，相对于初始化用光束，非初始化状态的多个记录层中的至少一个记录层的反射率小于初始化的光束的反射率相对于光束进行初始化的状态。通过在照射位于更靠近光束照射侧的记录层之前，在多个记录层之间照射位于离光束照射侧更远离光束的记录层，以便初始记录层没有初始化不规则。在初始化中，在光信息记录介质上沿径向相同距离的位置处，在距离光束照射侧更靠近的记录层之前，照射距光束照射侧更远的记录层用另一光束照射，使得多个记录层通过其中光束聚焦在不同位置的光束投影操作同时被初始化。这确保了在短时间内没有不规则的初始化。

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