Magnetic recording medium
    1.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4619856A

    公开(公告)日:1986-10-28

    申请号:US737968

    申请日:1985-05-28

    IPC分类号: G11B5/73 G11B5/70

    摘要: A magnetic recording medium is described, comprising a nonmagnetic support, a magnetic layer, and a nonmagnetic intermediate layer provided between the support and the magnetic layer, the nonmagnetic intermediate layer containing a radiation-polymerizable compound and finely divided particles, the nonmagnetic intermediate layer being polymerized by irradiation and having a surface roughness from about 0.001 to 0.02 .mu.m. This medium provides reduced gap loss between the medium and a magnetic head, and is suitable for use in high density recording.

    摘要翻译: 描述了一种磁记录介质,其包括设置在载体和磁性层之间的非磁性载体,磁性层和非磁性中间层,非磁性中间层含有可辐射聚合化合物和细碎颗粒,非磁性中间层为 通过照射聚合并具有约0.001至0.02μm的表面粗糙度。 该介质在介质和磁头之间提供减小的间隙损失,并且适用于高密度记录。

    Method of making substrate for magnetic recording medium
    2.
    发明授权
    Method of making substrate for magnetic recording medium 失效
    制造磁记录介质基板的方法

    公开(公告)号:US4810435A

    公开(公告)日:1989-03-07

    申请号:US918076

    申请日:1986-10-14

    摘要: A method of making a substrate for a magnetic recording medium comprises the steps of applying a radiation-polymerizable compound at least to one surface of a base sheet, closely contacting a surface of a transfer member with a surface of a coating layer thus formed of the radiation-polymerizable compound, exposing the coating layer to a radiation from the side of the base sheet or the transfer member, whichever is permeable to the radiation, and separating the transfer member form the surface of the coating layer. The surface of the transfer member is adjusted so that the arithmetical mean deviation at a cut-off value of 0.25 mm and at a measuring length of 80 mm is within the range of 0.001 .mu.m to 0.050 .mu.m, and the ratio of the maximum height at a cut-off value of 0.25 mm and at a measuring length of 20 mm to the arithmetical mean deviation is within the range of 5:1 to 20:1.

    摘要翻译: 一种制备磁记录介质的基板的方法包括以下步骤:在基片的至少一个表面上施加可辐射聚合的化合物,使转印构件的表面与由此形成的涂层的表面紧密接触 可辐射聚合的化合物,将涂层暴露于从基片或转印构件的侧面到辐射的可透过的辐射,并且将转印构件从涂层的表面分离。 调整转印部件的表面,使得截止值为0.25mm,测量长度为80mm的算术平均偏差在0.001μm至0.050μm的范围内,并且最大值 截止值为0.25mm,测量长度为20mm的算术平均偏差的高度在5:1至20:1的范围内。

    Magnetic recording medium
    3.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4663209A

    公开(公告)日:1987-05-05

    申请号:US724231

    申请日:1985-04-17

    摘要: Magnetic recording medium is disclosed which comprises a non-magnetic support having coated thereon a magnetic layer mainly containing ferromagnetic metal particles and a binder:(1) wherein the non-magnetic support is a polyester film having a thickness of 4 to 12 .mu.m, (b) an F5 value in a machine direction of 16 kg/mm.sup.2 or more, (c) a breaking strength in a machine direction of 25 kg/mm.sup.2 or more, (d) a breaking elongation in a machine direction of 90% or less, (e) a surface roughness (Ra) of 0.01 to 0.03 .mu.m, and (f) a fish eye (FE), which is shown in terms of height (H), of 6H or more having 0 per 100 cm.sup.2, a fish eye of 5H having 2 or less per 100 cm.sup.2 and a fish eye of 4H having 5 or less per 100 cm.sup.2 ;(2) wherein the ferromagnetic metal particles have (a) a saturation magnetization (.sigma.s) of 110 to 160 emu/g, and (b) a specific surface area measured by the BET method of 25 to 65 m.sup.2 /g; and(3) wherein the magnetic layer has (a) a coercive force (Hc) of 700 Oe or more, (b) a surface roughness (Ra) of 0.015 .mu.m or less and (c) a thickness of 1.5 to 4.5 .mu.m.

    摘要翻译: 公开了一种磁记录介质,其包括其上涂覆有主要包含铁磁性金属颗粒和粘合剂的磁性层的非磁性载体:(1)其中非磁性载体为厚度为4至12μm的聚酯膜, (b)机器方向的F5值为16kg / mm 2以上,(c)机器方向的断裂强度为25kg / mm 2以上,(d)机器方向的断裂伸长率为90%, (e)表面粗糙度(Ra)为0.01〜0.03μm,(f)以高度(H)表示的每100cm 2为0以上的6H以上的鱼眼(FE) 5H的鱼眼每100cm 2具有2个或更少的鱼眼,4H的鱼眼具有每100cm 2具有5个或更少的鱼眼; (2)其中铁磁金属颗粒具有(a)110至160emu / g的饱和磁化强度(σ),和(b)通过BET法测量的比表面积为25至65m 2 / g; 和(3)其中磁性层具有(a)700Oe以上的矫顽力(Hc),(b)0.015μm以下的表面粗糙度(Ra)和(c)1.5〜4.5μm的厚度 m。

    OPTICAL FILM, AND GLASS
    4.
    发明申请
    OPTICAL FILM, AND GLASS 审中-公开
    光学膜和玻璃

    公开(公告)号:US20100092784A1

    公开(公告)日:2010-04-15

    申请号:US12448043

    申请日:2007-11-26

    IPC分类号: B32B17/06 G02B5/30 H01J5/16

    摘要: The present invention provides an optical film having a phase difference film, and a polarized film formed on both surfaces of the phase difference film, wherein the polarized film contains at least a polarizer, and the absorption axis of the polarizer is substantially perpendicularly oriented to the polarized film surface. The present invention also provides a glass using the optical film.

    摘要翻译: 本发明提供了一种具有相位差膜的光学膜和形成在相位差膜的两个表面上的偏振膜,其中偏振膜至少包含偏振器,并且偏振器的吸收轴基本上垂直于 极化膜表面。 本发明还提供一种使用该光学膜的玻璃。

    Magnetic recording medium
    8.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US5340636A

    公开(公告)日:1994-08-23

    申请号:US974696

    申请日:1992-11-12

    申请人: Koh Kamada

    发明人: Koh Kamada

    摘要: A magnetic recording medium comprising a non-magnetic support having on at least one side thereof at least one magnetic layer, in which the magnetic layer comprises a binder having dispersed therein a ferromagnetic powder and the non-magnetic support has a coarse projection density of not more than 400 per 500 mm.sup.2, a surface roughness (Ra) of from 0.02 to 0.07 .mu.m (cut-off value: 0.25 mm), and a thermal shrinkage of not more than 1.0% when preserved at 100.degree. C. for 4 hours. The magnetic recording medium has satisfactory sensitivity and frequency characteristics, freedom from output variation in the high-frequency region, and excellent running properties at ordinarily temperature and ordinary humidity with a reduced rate of running stop.

    摘要翻译: 一种磁记录介质,包括在其至少一个侧面上具有至少一个磁性层的非磁性载体,其中所述磁性层包括其中分散有铁磁性粉末的粘合剂,并且所述非磁性载体具有不粗糙的突出密度 400个/ 500mm 2,表面粗糙度(Ra)为0.02〜0.07μm(截止值:0.25mm),当在100℃下保存4小时时的热收缩率不大于1.0% 。 磁记录介质具有令人满意的灵敏度和频率特性,无频率区域的输出变化,并且在通常的温度和普通湿度下具有降低的停止运行速度的优异的运行特性。

    OPTICAL FILM, AND GLASS
    10.
    发明申请
    OPTICAL FILM, AND GLASS 审中-公开
    光学膜和玻璃

    公开(公告)号:US20090059368A1

    公开(公告)日:2009-03-05

    申请号:US12181035

    申请日:2008-07-28

    申请人: Koh Kamada

    发明人: Koh Kamada

    IPC分类号: G02B5/30 G02B1/08

    摘要: The present invention provides glass containing a base, and an optical film, wherein the optical film contains a vertically polarizing film having a polarizer whose absorption axis is substantially vertically oriented to a film surface, and a π/2 optical rotation film containing an optical rotator for rotating a vibration direction of linearly polarized light by substantially 90 degrees.

    摘要翻译: 本发明提供一种含有基材和光学膜的玻璃,其中,所述光学膜含有具有吸收轴基本上垂直于膜表面的偏振片的垂直偏振膜,以及含有旋光器的pi / 2旋光膜 用于使线偏振光的振动方向旋转大致90度。