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    • 12. 发明授权
    • Magnetic recording medium
    • 磁记录介质
    • US09311946B2
    • 2016-04-12
    • US13211051
    • 2011-08-16
    • Kenji TanakaMasao FujitaSadamu Kuse
    • Kenji TanakaMasao FujitaSadamu Kuse
    • G11B5/71G11B5/714G11B5/738
    • G11B5/71G11B5/70615G11B5/70626G11B5/714G11B5/738G11B5/78
    • A magnetic recording medium of the present invention is a magnetic recording medium including a non-magnetic substrate; a non-magnetic layer that is formed on one of principal surfaces of the non-magnetic substrate and contains a non-magnetic powder, a binder, and a lubricant; and a magnetic layer that is formed on a principal surface of the non-magnetic layer opposite to the non-magnetic substrate and contains a magnetic powder and a binder. The magnetic powder has an average particle size between 10 nm and 35 nm inclusive. The lubricant is migratable to the magnetic layer and forms a lubricant layer on a surface of the magnetic layer when a pressure is applied to the magnetic layer. When spacing of the surface of the magnetic layer before and after washing the lubricant with n-hexane is measured with a TSA (Tape Spacing Analyzer), the value of the spacing after washing is 3 to 10 nm, and the value of the spacing before washing is 1 to 5 nm smaller than the value of the spacing after washing.
    • 本发明的磁记录介质是包括非磁性基片的磁记录介质; 非磁性层,其形成在所述非磁性基板的一个主表面上并且包含非磁性粉末,粘合剂和润滑剂; 以及形成在与非磁性基板相对的非磁性层的主表面上并且包含磁性粉末和粘合剂的磁性层。 磁性粉末的平均粒径为10nm〜35nm。 当向磁性层施加压力时,润滑剂可移动到磁性层并在磁性层的表面上形成润滑剂层。 当使用TSA(胶带间隔分析仪)测量用正己烷洗涤润滑剂之前和之后的磁性层表面的间隔时,洗涤后的间隔值为3至10nm,并且之前的间隔值 洗涤比洗涤后的间隔值小1〜5nm。
    • 13. 发明申请
    • MAGNETIC RECORDING MEDIUM
    • 磁记录介质
    • US20120045664A1
    • 2012-02-23
    • US13211051
    • 2011-08-16
    • Kenji TANAKAMasao FujitaSadamu Kuse
    • Kenji TANAKAMasao FujitaSadamu Kuse
    • G11B5/70G11B5/714G11B5/71
    • G11B5/71G11B5/70615G11B5/70626G11B5/714G11B5/738G11B5/78
    • A magnetic recording medium of the present invention is a magnetic recording medium including a non-magnetic substrate; a non-magnetic layer that is formed on one of principal surfaces of the non-magnetic substrate and contains a non-magnetic powder, a binder, and a lubricant; and a magnetic layer that is formed on a principal surface of the non-magnetic layer opposite to the non-magnetic substrate and contains a magnetic powder and a binder. The magnetic powder has an average particle size between 10 inn and 35 nm inclusive. The lubricant is migratable to the magnetic layer and forms a lubricant layer on a surface of the magnetic layer when a pressure is applied to the magnetic layer. When spacing of the surface of the magnetic layer before and after washing the lubricant with n-hexane is measured with a TSA (Tape Spacing Analyzer), the value of the spacing after washing is 3 to 10 nm, and the value of the spacing before washing is 1 to 5 nm smaller than the value of the spacing after washing.
    • 本发明的磁记录介质是包括非磁性基片的磁记录介质; 非磁性层,其形成在所述非磁性基板的一个主表面上并且包含非磁性粉末,粘合剂和润滑剂; 以及形成在与非磁性基板相对的非磁性层的主表面上并且包含磁性粉末和粘合剂的磁性层。 该磁性粉末的平均粒径为10至35纳米(含)。 当向磁性层施加压力时,润滑剂可移动到磁性层并在磁性层的表面上形成润滑剂层。 当使用TSA(胶带间隔分析仪)测量用正己烷洗涤润滑剂之前和之后的磁性层表面的间隔时,洗涤后的间隔值为3至10nm,并且之前的间隔值 洗涤比洗涤后的间隔值小1〜5nm。
    • 14. 发明申请
    • SERVO SIGNAL RECORDING APPARATUS, SERVO SIGNAL RECORDING METHOD, AND MAGNETIC TAPE
    • 伺服信号记录装置,伺服信号记录方法和磁带
    • US20080285171A1
    • 2008-11-20
    • US12019344
    • 2008-01-24
    • Kenji TANAKAKenichiro YoshidaMasao FujitaSadamu Kuse
    • Kenji TANAKAKenichiro YoshidaMasao FujitaSadamu Kuse
    • G11B5/584
    • G11B5/584G11B5/024
    • A servo signal recording apparatus and servo-signal recording method for recording a servo signal on a magnetic tape that includes a magnetic layer having a data area capable of storing data and a servo area capable of storing a servo signal, the apparatus including a transportation unit for transporting the magnetic tape; a DC erasing unit on a downstream side in a magnetic tape transportation direction that performs DC erasure to a surface layer portion of the magnetic layer by magnetization in a longitudinal direction of the magnetic tape; and a servo signal recording unit on a downstream side of the DC erasing unit in the magnetic tape transportation direction, that rubs against the magnetic layer of the magnetic tape, and records a servo signal in the servo area by magnetization in a direction opposite to a direction of the magnetization of the DC erasing unit.
    • 一种用于在包括具有能够存储数据的数据区的磁性层和能够存储伺服信号的伺服区的磁带上记录伺服信号的伺服信号记录装置和伺服信号记录方法,所述装置包括传送单元 用于运送磁带; 在磁带传送方向下游侧的直流擦除单元,通过磁带的长度方向的磁化对磁性层的表层部进行直流擦除; 以及伺服信号记录单元,其在磁带传送方向上的直流擦除单元的下游侧,摩擦磁带的磁性层,并且通过磁化沿与磁带的相反方向的磁化将伺服信号记录在伺服区域中 直流擦除单元的磁化方向。
    • 15. 发明申请
    • MAGNETIC TAPE DRIVING APPARATUS
    • 磁带驱动装置
    • US20080259490A1
    • 2008-10-23
    • US12104923
    • 2008-04-17
    • Masao FujitaSadamu Kuse
    • Masao FujitaSadamu Kuse
    • G11B5/584
    • G11B5/54G11B15/12G11B15/44G11B15/62
    • A magnetic tape driving apparatus of the present invention includes a support member for separating a magnetic tape from a magnetic head on at least one of a tape input side and a tape output side of the magnetic head. The support member separates the magnetic tape from the magnetic head at least when a tape driving portion causes the magnetic tape to start running and/or to stop running. With this configuration, the magnetic tape driving apparatus does not suffer from damage to the magnetic head and the magnetic tape when the magnetic tape makes a transition from the stopped state to the running state and vice versa or changes in the running direction.
    • 本发明的磁带驱动装置包括用于在磁头的磁带输入侧和磁带输出侧中的至少一个上从磁头分离磁带的支撑部件。 至少当磁带驱动部分使磁带开始运行和/或停止运行时,支撑部件将磁带与磁头分开。 利用这种结构,磁带驱动装置在磁带从停止状态转变为运行状态或反之亦然或运行方向变化时,不会损坏磁头和磁带。