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    • 1. 发明公开
    • Process for producing optical disks
    • Verfahren zur Herstellung von optischen Platten。
    • EP0540843A1
    • 1993-05-12
    • EP92114417.6
    • 1992-08-24
    • HITACHI, LTD.
    • Horigome, ShinkichiMiyamura, YoshinoriAnzai, YumikoKato, KeizoShiraishi, Hiroshi
    • G11B7/26B29D17/00
    • G11B7/261B29D17/005B29K2101/10G11B7/26
    • In a process for producing optical disks comprising the steps of subjecting the photoresist layer (3) on a substrate (1) formed of silicon, quartz, glass or a metal to light exposure, developing and etching treatments to obtain a stamper (6) and then duplicating an information pattern for an optical disk from the stamper (6) obtained above to a transparent substrate by using a UV curable resin to prepare a replicated substrate of an optical disk, a large number of stampers (6) can be prepared in a short time by conducting the light exposure (7) either by contacting the mask side surface of a substrate (1) provided with a photomask having an information pattern for an optical disk to the photoresist side surface of said substrate having the photoresist layer (3) or by noncontact projection, and a rapid replication of large quantities of replicated substrates becomes possible by using a large number of stampers (6) thus prepared.
    • 在制造光盘的方法中,包括以下步骤:使由硅,石英,玻璃或金属形成的基板(1)上的光致抗蚀剂层(3)进行曝光,显影和蚀刻处理以获得压模(6)和 然后通过使用UV固化树脂将来自上述获得的压模(6)的光盘的信息图案复制到透明基板上,以制备光盘的复制基板,可以制备大量的印模机(6) 通过将设置有具有光盘信息图案的光掩模的基板(1)的掩模侧表面接触到具有光致抗蚀剂层(3)的所述基板的光致抗蚀剂侧表面,进行曝光(7) 或通过非接触投影,并且通过使用如此制备的大量压模(6),可以快速复制大量的复制衬底。
    • 8. 发明公开
    • Information recording medium and information recording and reproducing method and apparatus
    • 记录盘和方法和设备用于记录和再现数据。
    • EP0432731A2
    • 1991-06-19
    • EP90123820.4
    • 1990-12-11
    • HITACHI, LTD.HITACHI MAXELL, LTD.
    • Okamine, ShigenoriNishida, TetsuyaHorigome, ShinkichiTerao, MotoyasuOhta, Norio
    • G11B7/24G11B7/00
    • G11B7/24G11B7/0045
    • An information recording medium (32) which comprises two or more energy beam absorbing layers (2, 4) which are formed at different positions across the thickness within the depth of focus of the energy beam, and an energy beam transmitting layer (3) interposed between said energy beam absorbing layers (2, 4).
      A method for recording and reproducing information by applying an energy beam to an information recording medium (32) mentioned above, characterized in that the information recording is accomplished in response to the energy beam power which varies or the pulse waveform which varies, or both.
      An apparatus for reproducing information which comprises a means (30) to encode information into recording signals and a means (31) to drive the irradiating energy beam.
      The information recording medium (32) has a high recording density and a large recording capacity owing to its capability of multi-valued recording.
    • 其包括两个或多个能量束吸收层的信息记录介质(32)(2,4),它们是在整个能量束的焦点深度内的厚度的不同位置形成,并且,以能量束发射层(3)夹 所述能量束吸收层之间(2,4)。 通过在信息施加到能量束到记录上述培养基(32),用于记录和再现信息的方法,其特征在于,所做的信息记录是响应于而变化的能量束的功率或脉冲波形而变化,或二者来实现。 一种用于再现包括装置(30)的信息来编码信息到记录信号和装置(31)以驱动所述照射能量束的装置。 的信息记录介质(32)具有高的记录密度,并且由于其多值记录的能力的大的记录容量。