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    • 56. 发明授权
    • Polyimide film having denatured surface
    • 具有变性表面的聚酰亚胺膜
    • US06545121B1
    • 2003-04-08
    • US09630515
    • 2000-08-02
    • Kenji MatsubaraHiroshi Uchiyama
    • Kenji MatsubaraHiroshi Uchiyama
    • C08J328
    • C08J7/123C08J2379/08C08K3/22C08K3/26C08K2201/013C08L79/08H05K1/0346H05K1/0373Y10T428/25
    • A polyimide film of 20 to 125 &mgr;m thick composed of aromatic polyimide prepared from an aromatic tetracarboxylic acid component (composed mainly of 3,4,3′,4′-biphenyltetracarboxylic acid or its derivative) and an aromatic diamine component (composed mainly of p-phenyl-enediamine) and containing a micro-granular filler of metal atom-containing inorganic material, can be so denatured on its surfaces that an amount of the metal atom and a ratio of oxygen/carbon would increase by 0.03 to 1.0 atomic % and 0.01 to 0.20, respectively, on the processed surfaces, upon running in a gaseous mixture of argon and hydrogen between a plurality of activated plasma discharge electrodes arranged in a double line under such condition that the running polyimide film is free from contact with the electrodes.
    • 由芳族四羧酸组分(主要由3,4,3',4'-联苯四羧酸或其衍生物组成)和芳族二胺组分(主要由p组成)组成的由芳族聚酰亚胺组成的20至125μm厚的聚酰亚胺膜 苯二胺)和含有金属原子的无机材料的微粒填料可以在其表面变性,使得金属原子的量和氧/碳的比例将增加0.03至1.0原子%,和 在处理后的表面上,在运行聚酰亚胺膜与电极接触的条件下,在排列成双线的多个活化等离子体放电电极之间,在氩气和氢气的气体混合物中运行时,分别为0.01〜0.20。
    • 57. 发明授权
    • Magnetic recording medium
    • 磁记录介质
    • US5858520A
    • 1999-01-12
    • US776256
    • 1997-01-21
    • Hiroshi Uchiyama
    • Hiroshi Uchiyama
    • G11B5/66G11B5/64G11B5/72G11B5/73G11B5/735G11B5/84
    • G11B5/735G11B5/72Y10S428/90Y10T428/24975Y10T428/265Y10T428/30Y10T428/3154Y10T428/31544Y10T428/31678
    • In a magnetic recording medium according to the present invention, a magnetic layer consisting of a metal magnetic material is formed on the upper surface of a non-magnetic support member, a protective layer is formed on the magnetic layer, and a back-coat layer is formed on the rear surface of the non-magnetic support member. In the present invention, in particular, the protective layer is formed by a thin film containing carbon as a main component and 5 to 20 atom % of hydrogen, and the back-coat layer is formed by a thin film containing carbon as a main component and 5 to 20 atom % of hydrogen, thereby making it possible to obtain a magnetic recording medium having excellent sliding characteristics and excellent durability.
    • PCT No.PCT / JP96 / 01372 Sec。 371日期1997年1月21日 102(e)日期1997年1月21日PCT 1996年5月23日PCT公布。 公开号WO96 / 37886 日期:1996年11月28日在根据本发明的磁记录介质中,在非磁性支撑构件的上表面上形成由金属磁性材料构成的磁性层,在磁性层上形成保护层, 在非磁性支撑构件的后表面上形成背涂层。 在本发明中,特别地,保护层由以碳为主成分的薄膜和5〜20原子%的氢形成,背涂层由以碳为主要成分的薄膜形成 和5〜20原子%的氢,从而可以获得具有优异的滑动特性和优异的耐久性的磁记录介质。