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    • 2. 发明授权
    • Magneto-optical recording medium and method of manufacturing the same
    • 磁光记录介质及其制造方法
    • US5772856A
    • 1998-06-30
    • US211358
    • 1994-06-07
    • Takeo KawaseMasaya IshidaSatoshi NebashiSatoshi ShimokawatoToshiaki MikoshibaShoji HoshinaHiromu MiyazawaAtsushi Takakuwa
    • Takeo KawaseMasaya IshidaSatoshi NebashiSatoshi ShimokawatoToshiaki MikoshibaShoji HoshinaHiromu MiyazawaAtsushi Takakuwa
    • G11B11/105C23C14/00B05D5/12G11B5/66
    • G11B11/10591G11B11/10582G11B11/10584G11B11/10586Y10S428/90Y10T428/26Y10T428/265
    • In a magneto-optical recording medium, a first dielectric layer 12, a recording layer 13, an auxiliary recording layer 14, a second dielectric layer 15 and a reflective layer 16 are sequentially laminated on a transparent substrate 11. Recording layer 14 is formed of a rare-earth transition-metal amorphous alloy having a film thickness of about several hundreds angstroms. Auxiliary recording layer 14 is also formed of a rare-earth transition-metal amorphous alloy. However, the Curie temperature T.sub.C2 of auxiliary recording layer 14 is 10.degree. K or more higher than the Curie temperature T.sub.C1 of recording layer 13, and the film thickness of auxiliary recording layer is ultra-thin, such as, 70.ANG. or less. Further, the squareness ratio of auxiliary recording layer 14 at the Curie temperature T.sub.C1 of recording layer 13 is 0.7 or higher. These characteristics of auxiliary recording layer 14 may be realized by selecting the composition of auxiliary recording layer 14 or by lowering the density of the layer. In addition, a transition metal, such as, Fe or Co, or a non-magnetic metal, such as, Pt, Al, Ti or Cr, or a nitride of rare-earth transition-metal amorphous alloy may be employed as the material for auxiliary recording layer 14.
    • PCT No.PCT / JP93 / 01062 Sec。 371日期:1994年6月7日 102(e)日期1994年6月7日PCT提交1993年7月29日PCT公布。 公开号WO94 / 03892 日期:1994年02月17日在磁光记录介质中,第一电介质层12,记录层13,辅助记录层14,第二电介质层15和反射层16依次层压在透明基板11上。记录 层14由膜厚约为几百埃的稀土过渡金属非晶态合金形成。 辅助记录层14也由稀土过渡金属非晶合金形成。 然而,辅助记录层14的居里温度TC2比记录层13的居里温度TC1高10°K以上,辅助记录层的膜厚超薄,例如70以下。 此外,记录层13的居里温度TC1下的辅助记录层14的矩形比为0.7以上。 辅助记录层14的这些特性可以通过选择辅助记录层14的组成或通过降低层的密度来实现。 此外,可以使用诸如Fe或Co的过渡金属或诸如Pt,Al,Ti或Cr的非磁性金属或稀土过渡金属非晶合金的氮化物作为材料 用于辅助记录层14。
    • 3. 发明授权
    • Method and apparatus for manufacturing optical recording medium
    • 用于制造光学记录介质的方法和装置
    • US06280660B1
    • 2001-08-28
    • US09284936
    • 1999-06-24
    • Atsushi TakakuwaTakao NishikawaSatoshi Nebashi
    • Atsushi TakakuwaTakao NishikawaSatoshi Nebashi
    • B29D1100
    • G11B7/263B29C35/08B29C43/021B29C43/34B29C2043/025B29C2043/3433B29C2043/3438B29C2043/3488B29L2017/005Y10S425/81
    • In an optical recording medium manufacturing method for forming an optical recording medium by hardening photo curing resin between a resin plate (11) and a template in order to provide a technique for manufacturing an optical recording medium that has excellent optical properties and that is not apt to undergo failure during production, the resin plate (11) is produced by a heating step (104) for heating thermoplastic resin (10) to a predetermined temperature to be melted, a feeding step (103, 105) for feeding the melted thermoplastic resin (10) into a mold (1), and a molding step (101, 102) for molding the thermoplastic resin (10), which has been fed into the mold (1), into the resin plate (11) by compression. Since molding is performed by the mold in a low-pressure and low-temperature environment, it is possible to prevent deterioration due to oxidation, and molding strains.
    • 在用于通过在树脂板(11)和模板之间固化光固化树脂形成光学记录介质的光学记录介质制造方法中,为了提供具有优异的光学特性并且不适合的光学记录介质的制造技术 在制造过程中发生故障,通过将热塑性树脂(10)加热到预定温度以进行熔化的加热步骤(104)来生产树脂板(11),用于将熔融的热塑性树脂 (10)注入到模具(1)中,以及用于通过压缩将已经进料到模具(1)中的热塑性树脂(10)成型到树脂板(11)中的模制步骤(101,102)。 由于在低压和低温环境中通过模具进行成型,因此可以防止由于氧化和成型变形引起的劣化。
    • 4. 发明授权
    • Apparatus and process for producing optical recording medium
    • 用于制造光记录介质的装置和方法
    • US06280661B1
    • 2001-08-28
    • US09297240
    • 1999-06-24
    • Atsushi TakakuwaTakao NishikawaSatoshi Nebashi
    • Atsushi TakakuwaTakao NishikawaSatoshi Nebashi
    • B29D1100
    • B29C39/10B29C39/26B29C39/36B29C43/021B29C2035/0833B29C2043/3455B29D17/005G11B7/263Y10S425/81
    • In order to realize a compact construction of an apparatus for producing an optical recording medium while shortening the time required for transporting a mold, there is provided an apparatus for producing an optical recording medium by curing a curable resin (102b) between a substrate (101) and a mold (103), including: a mold fixing mechanism (2) for fixing the mold (103); a transporting mechanism (1) for transporting the substrate (101) to which the curable resin (102b) has been applied to a position where the mold (103) is fixed, and placing the substrate (101) on the mold (103) such that the surface of said substrate to which the curable resin (102b) has been applied faces the mold (103); a resin curing mechanism (3) for curing the curable resin (102b) which has been sandwiched between the mold (103) and the substrate (101) by the action of the transporting mechanism (1); and a separating mechanism (4) for separating the resin (102) that has been cured by said resin curing mechanism (3), together with the substrate (101), from the mold (103).
    • 为了实现用于制造光学记录介质的设备的紧凑结构,同时缩短了输送模具所需的时间,提供了一种通过固化基板(101)之间的可固化树脂(102b)来制造光学记录介质的设备 )和模具(103),其包括:用于固定所述模具(103)的模具固定机构(2); 用于将已经施加有固化树脂(102b)的基板(101)输送到固定模具(103)的位置的输送机构(1),并将基板(101)放置在模具(103)上 已经涂覆有可固化树脂(102b)的所述基材的表面面向模具(103); 用于通过传送机构(1)的作用使已经夹在模具(103)和基板(101)之间的固化树脂(102b)固化的树脂固化机构(3); 以及分离机构(4),用于从所述模具(103)将与所述基板(101)一起被所述树脂固化机构(3)固化的树脂(102)分离。