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    • 21. 发明授权
    • Method of manufacturing glass substrate
    • 制造玻璃基板的方法
    • US08002923B2
    • 2011-08-23
    • US12249341
    • 2008-10-10
    • Tetsuo SuzukiYoshio Kawakami
    • Tetsuo SuzukiYoshio Kawakami
    • B24B1/00B24B9/00B32B38/00
    • G11B5/8404B24B9/065
    • A glass block is formed by stacking, fixing, and integrating a plurality of thin glass plates having a predetermined thickness. An annular glass block is formed by coring the glass block. Surfaces of an inside circumference and an outside circumference of the annular glass block are ground. The annular glass block of which the surfaces of the inside circumference and the outside circumference are ground are separated into individual annular glass substrates, and separated annular glass substrates are cleaned. Then, edge portions of the inside circumference and the outside circumference of a cleaned annular glass substrate are chamfered.
    • 通过堆叠,固定和整合具有预定厚度的多个薄玻璃板来形成玻璃块。 通过取芯玻璃块形成环形玻璃块。 研磨环形玻璃块的内周和外周的表面。 将内周面和外周面的表面研磨的环状玻璃块分离成单独的环状玻璃基板,并且分离的环状玻璃基板被清洁。 然后,将清洁后的环状玻璃基板的内周缘部和外周缘部进行倒角。
    • 29. 发明授权
    • Magnetic head
    • 磁头
    • US4413295A
    • 1983-11-01
    • US372556
    • 1982-04-28
    • Hiroaki KatoJunji HamanaAkeo SakaiYoshio KawakamiAtsushi GotoSaichiro Amano
    • Hiroaki KatoJunji HamanaAkeo SakaiYoshio KawakamiAtsushi GotoSaichiro Amano
    • G11B5/105G11B5/147G11B5/21G11B3/08G11B5/08
    • G11B5/21G11B5/105G11B5/147
    • The present invention provides a magnetic head of which magnetic core is composed of thin plates of a high magnetic permeability, each provided with an adhesive layer comprising a granular substance. In such structure, the stress relaxation achieved by said granular substance prevents the loss of effective magnetic permeability of said core, thereby improving the high frequency characteristics. Also the presence of said granular substance realizes a hardness in the vicinity of said adhesive higher than that of said thin plates of a high magnetic permeability, thereby improving the abrasion resistance of said core. Furthermore said adhesive layer is rendered satisfactorily thinner than said thin plate to prevent the loss of sensitivity. Furthermore a fixing member for supporting said core is made of such a composition as to be evenly abraded with said core, thereby preventing deformation of the head resulting from abrasion by the recording medium and thus enabling to maintain the initial electromagnetic converting characteristics over a prolonged period.
    • 本发明提供一种磁头,其磁芯由高磁导率的薄板构成,每个磁性体均设置有包含粒状物质的粘合剂层。 在这种结构中,由所述粒状物质实现的应力松弛防止了所述芯的有效磁导率的损失,从而提高了高频特性。 此外,所述粒状物质的存在使所述粘合剂附近的硬度比所述高磁导率薄板的硬度高,从而提高所述芯的耐磨性。 此外,所述粘合剂层比所述薄板令人满意地变薄,以防止灵敏度的损失。 此外,用于支撑所述芯的固定构件由这样的组合物制成,以便与所述芯均匀地磨损,从而防止由于记录介质的磨损导致的头部变形,从而能够在较长时间内保持初始电磁转换特性 。