Stamper for producing optical recording medium, optical recording medium, and methods of producing the same
    22.
    发明申请
    Stamper for producing optical recording medium, optical recording medium, and methods of producing the same 失效
    用于制造光学记录介质的压模,光学记录介质及其制造方法

    公开(公告)号:US20030031116A1

    公开(公告)日:2003-02-13

    申请号:US10183649

    申请日:2002-06-27

    Abstract: A stamper suppressed in surface roughness, uneven thickness, and deviation of circularity in inner circumference, a method of producing the same, an optical recording medium produced by molding using the stamper, and a method of producing the same, wherein a base member having a mirror polished main surface and comprising silicon or glass is formed with a resist film; the resist film is exposed by a focused electron beam, an ultraviolet ray laser, etc. and developed so as to form a resist film of a pattern corresponding to relief shapes; the mirror surface of the base member is processed to relief shapes (projecting regions and recessed regions) by dry etching etc. using the obtained resist film as a mask so as to obtain a stamper; the obtained stamper is used for injection molding to form a medium substrate; and an optical recording multilayer film and a protective layer are formed to thereby produce an optical recording medium.

    Abstract translation: 抑制表面粗糙度,不均匀厚度和内周圆度的偏差的压模,其制造方法,使用该压模成型的光记录介质及其制造方法,其中,具有 镜面抛光的主表面并且包括硅或玻璃形成有抗蚀剂膜; 抗蚀剂膜通过聚焦电子束,紫外线激光等曝光,并显影以形成对应于浮雕形状的图案的抗蚀剂膜; 使用得到的抗蚀剂膜作为掩模,通过干蚀刻等将基底构件的镜面加工成凹凸形状(突出区域和凹陷区域),以获得压模; 所得压模用于注射成型以形成介质基板; 并且形成光记录多层膜和保护层,从而产生光记录介质。

    High-density disk recording medium having an asymmetrically-shaped center hole and manufacturing method thereof
    23.
    发明申请
    High-density disk recording medium having an asymmetrically-shaped center hole and manufacturing method thereof 失效
    具有不对称形状的中心孔的高密度盘记录介质及其制造方法

    公开(公告)号:US20020181387A1

    公开(公告)日:2002-12-05

    申请号:US10145391

    申请日:2002-05-13

    CPC classification number: G11B7/24 G11B23/0035

    Abstract: The present invention relates to a high-density disk that is structured to prevent a collision of an optical pickup's objective lens with the high-density disk if the disk is placed upside down in a disk device that is able to record and reproduce signals to/from the high-density disk. A high-density disk recording medium according to the present invention is structured such that, wherein a recording layer having high-density pit patterns is offset from a center plane of disk thickness, a center hole of the disk recording medium is asymmetric in shape with respect to the center plane where, for example, both entrances of the center hole have mutually different diameters.

    Abstract translation: 本发明涉及一种高密度盘,其被构造为防止光学拾取器的物镜与高密度盘的碰撞,如果盘被倒置放置在能够记录和再现信号到/ 从高密度磁盘。 根据本发明的高密度盘记录介质被构造成使得其中具有高密度凹坑图案的记录层偏离圆盘厚度的中心平面,盘记录介质的中心孔的形状不对称, 相对于中心平面,例如,中心孔的两个入口具有相互不同的直径。

    Production process for ring shaped resin bonded magnet

    公开(公告)号:US20020145220A1

    公开(公告)日:2002-10-10

    申请号:US10072983

    申请日:2002-02-12

    Abstract: There is provided a process of producing a ring shaped resin bonded magnetic member by molding a feed mixture 24 which contains a lubricant and a magnetic powder composite made of magnetic powder and a heat curable resin composition which is in a solid state at a room temperature. The process is characterized in that (1) heating an inner peripheral surface of the annular cavity 20 so as to transfer heat to the feed mixture 24 whereby heating the feed mixture to a temperature not lower than a softening temperature and below a curing temperature of the resin composition, and compressing the filled feed mixture after or during the heating; and (ii) cooling the inner peripheral surface so as to transfer heat from the heated and compressed feed mixture through the inner peripheral surface, whereby cooling the feed mixture to a temperature below the softening temperature of the resin composition so as to obtain a green compact having a ring shape.

    Reserve tank for engine coolant and straddle-type all terrain vehicle equipped with the reserve tank
    26.
    发明申请
    Reserve tank for engine coolant and straddle-type all terrain vehicle equipped with the reserve tank 失效
    用于发动机冷却液的储备罐和配备储备罐的跨骑式全地形车辆

    公开(公告)号:US20020092856A1

    公开(公告)日:2002-07-18

    申请号:US10053155

    申请日:2002-01-16

    Abstract: The invention provides a reserve tank for engine coolant formed by a blow molding method in which an external surface of the reserve tank is colored simultaneously with blow molding process and thus painting is unnecessary, and a straddle-type all terrain vehicle equipped with the reserve tank. The method comprises the steps of placing a thermoplastic tube, called a nullparisonnull, between halves of an open mold, closing the mold halves, blowing the parison to expand the parison to the cavities of the mold halves, and cooling the parison to set the material, thereby forming the reserve tank. The method further comprises the steps of placing a thermoplastic film with a color which is different from that of the parison so that it covers at least one of the cavities before closing the molds, and expanding the thermoplastic film to the cavities along with the parison so that the film sticks thereto.

    Abstract translation: 本发明提供一种用吹塑法形成的用于发动机冷却剂的储罐,其中储备罐的外表面与吹塑过程同时着色,因此不需要喷涂,并且具有备用罐的跨骑式全地形车辆 。 该方法包括以下步骤:在打开的模具的半部之间放置称为“型坯”的热塑性管,关闭半模,吹出型坯以将型坯膨胀到半模的空腔,并冷却型坯 从而形成储备罐。 该方法还包括以下步骤:放置具有与型坯不同的颜色的热塑性薄膜,使得它在封闭模具之前覆盖至少一个空腔,并将热塑性膜与型坯一起膨胀到空腔中 胶片粘在其上。

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