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37 条记录 (耗时 0.042 秒)

    Magnetic recording medium
    21.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US06936328B2

    公开(公告)日：2005-08-30

    申请号：US10395275

    申请日：2003-03-25

    申请人： Satoru Hayakawa ,  Yuichiro Murayama

    发明人： Satoru Hayakawa ,  Yuichiro Murayama

    IPC分类号： G11B5/70 ,  G11B5/702 ,  G11B5/738 ,  G11B5/733

    CPC分类号： G11B5/738 ,  G11B5/70 ,  G11B5/7026 ,  Y10T428/24355 ,  Y10T428/25 ,  Y10T428/2982

    摘要： A magnetic recording medium comprising: a support; a subbing layer comprising a radiation-curable resin; a nonmagnetic layer comprising a nonmagnetic powder and a binder; and at least one magnetic layer comprising a ferromagnetic powder and a binder, in this order, wherein the subbing layer has a thickness of from 0.05 to 1.0 μm, and the nonmagnetic powder has an average acicular ratio of 8 or more and has a form of a raft.

    摘要翻译： 一种磁记录介质，包括：支撑体; 包含辐射固化树脂的底层; 包含非磁性粉末和粘合剂的非磁性层; 以及包含铁磁粉末和粘合剂的至少一个磁性层，其中所述底层具有0.05至1.0μm的厚度，并且所述非磁性粉末的平均针状比为8或更大，并且具有 筏子

    Magnetic recording medium comprising an underlayer of non magnetic powder and binder resin and a magnetic layer with a specified Young's modulus
    27.
    发明授权
    Magnetic recording medium comprising an underlayer of non magnetic powder and binder resin and a magnetic layer with a specified Young's modulus 失效
    磁记录介质包括非磁性粉末和粘合剂树脂的底层和具有特定杨氏模量的磁性层

    公开(公告)号：US5358777A

    公开(公告)日：1994-10-25

    申请号：US19257

    申请日：1993-02-18

    申请人： Masaya Kojima ,  Satoru Hayakawa ,  Toshio Kawamata

    发明人： Masaya Kojima ,  Satoru Hayakawa ,  Toshio Kawamata

    IPC分类号： G11B5/82 ,  C09D5/23 ,  C09D7/12 ,  G11B5/70 ,  G11B5/73 ,  G11B5/733 ,  G11B5/738 ,  G11B5/842 ,  G11B5/00

    CPC分类号： G11B5/738 ,  Y10S428/90 ,  Y10T428/24942 ,  Y10T428/265

    摘要： A magnetic recording medium comprising (A) a non-magnetic support; (B) a non-magnetic layer comprising mainly a non-magnetic powder and a binder resin; and (C) a magnetic layer comprising mainly a ferromagnetic powder and a binder resin, wherein said non-magnetic layer is coated on said non-magnetic support; and said magnetic layer is coated over the previously formed non-magnetic layer while the previously formed non-magnetic layer is still wet; the thickness of the magnetic layer is 0.6 .mu.m or less; the Young's Modulus of the magnetic layer is from 50% to 95% of the Young's Modulus of the non-magnetic layer, and the glass transition temperature of the magnetic layer is lower than that of the non-magnetic layer. The magnetic recording medium has good electromagnetic characteristics and excellent running stability and running durability. It is suitable as a disc medium for high-density recording at a shortest recording wavelength of 1.5 .mu.m or less, displaying excellent overwriting characteristic in high-density recording. The running reliability of the magnetic recording medium is good.

    摘要翻译： 一种磁记录介质，包括（A）非磁性载体; （B）主要包含非磁性粉末和粘合剂树脂的非磁性层; 和（C）主要包含铁磁性粉末和粘合剂树脂的磁性层，其中所述非磁性层涂覆在所述非磁性载体上; 并且所述磁性层涂覆在先前形成的非磁性层上，同时先前形成的非磁性层仍然是湿的; 磁性层的厚度为0.6μm以下; 磁性层的杨氏模量是非磁性层的杨氏模量的50％至95％，并且磁性层的玻璃化转变温度低于非磁性层的玻璃化转变温度。 磁记录介质具有良好的电磁特性和良好的运行稳定性和运行耐久性。 适合于在1.5μm以下的最短记录波长下进行高密度记录的盘式介质，在高密度记录中显示优异的重写特性。 磁记录介质的运行可靠性好。

    Magnetic tape processing method and magnetic tape processing apparatus having an optical system
    29.
    发明授权
    Magnetic tape processing method and magnetic tape processing apparatus having an optical system 失效
    磁带处理方法和具有光学系统的磁带处理装置

    公开(公告)号：US06429411B1

    公开(公告)日：2002-08-06

    申请号：US09456811

    申请日：1999-12-08

    申请人： Osamu Iwasaki ,  Satoru Hayakawa ,  Hiroo Inaba ,  Takeshi Nagata

    发明人： Osamu Iwasaki ,  Satoru Hayakawa ,  Hiroo Inaba ,  Takeshi Nagata

    IPC分类号： G02B704

    CPC分类号： G11B5/84 ,  B23K26/066 ,  B23K26/067 ,  B23K26/082 ,  B23K26/0846 ,  B23K2101/16 ,  G11B5/78 ,  G11B23/113

    摘要： The magnetic tape processing method and apparatus allow at least one of a laser beam or laser beams in a visible region and a laser beam or laser beams in an ultraviolet region to be incident on a backing layer of a magnetic tape while transporting the magnetic tape in a lengthwise direction of the magnetic tape and process the backing layer by means of the laser beam or laser beams to form recesses on the backing layer. The processed magnetic tape is composed of a base layer, a magnetic layer formed on one surface of the base layer and the backing layer formed on another surface of the base layer and having recesses which are formed by processing the backing layer by means of the laser beam or laser beams. The method and apparatus can efficiently manufacture the magnetic tape having excellent characteristics such that the occurrence of the slip of the magnetic tape is not caused on a capstan roller and the like, even if the transportation speed of the tape is increased in a magnetic tape manufacturing apparatus, and furthermore a size of cupping of the magnetic tape is small.

    摘要翻译： 磁带处理方法和装置允许可视区域中的激光束或激光束中的至少一个以及紫外线区域中的激光束或激光束入射到磁带的背衬层上，同时将磁带传送到 磁带的长度方向，并通过激光束或激光束处理背衬层，以在背衬层上形成凹陷。 处理后的磁带由基底层，形成在基底层的一个表面上的磁性层和形成在基底层的另一个表面上的背衬层组成，具有通过激光加工背衬层形成的凹部 光束或激光束。 该方法和装置可以有效地制造具有优异特性的磁带，即使在磁带制造中磁带的传送速度增加也不会在绞盘辊等上引起磁带滑动的发生 装置，此外，磁带的拔罐尺寸很小。