Magnetic recording medium
    22.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4442171A

    公开(公告)日:1984-04-10

    申请号:US356285

    申请日:1982-03-09

    摘要: A magnetic recording medium comprising a nonmagnetic flexible substrate, a magnetic layer provided on the surface of the substrate and containing ferromagnetic grains dispersed in a binder, and a back layer provided on the back surface of the substrate. The magnetic recording medium has a stiffness (S.sub.TD) of 6.0 or less. The friction coefficient (.mu..sub.B) of the back layer surface with respect to the axial direction of a loading post in a video tape recorder is controlled to satisfy the condition:0.ltoreq..mu..sub.B .ltoreq.0.1S.sub.TD -0.05so as to make the magnetic recording medium highly resistant to damage due to movement in a video tape recorder.

    摘要翻译: 一种磁记录介质,包括非磁性柔性基板,设置在基板表面上并包含分散在粘结剂中的铁磁性颗粒的磁性层,以及设置在基板的背面上的背层。 磁记录介质具有6.0或更小的刚度(STD)。 背景层表面相对于录像机中的装载柱的轴向的摩擦系数(μB)被控制为满足以下条件:0≤b≤0.1STD-0.05,以便 使得磁记录介质高度抵抗由于磁带录像机中的移动而造成的损坏。

    Magnetic recording medium
    23.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4780365A

    公开(公告)日:1988-10-25

    申请号:US19286

    申请日:1987-02-26

    摘要: In a magnetic recording medium comprising a nonmagnetic support, a magnetic recording layer provided on one surface of said support and a back layer containing carbon black provided on another surface of said support, the improvement wherein said back layer has thickness of not larger than 0.6 .mu.m and contains an inorganic filler powder having a Mohs' scale of hardness of not less than 5, a mean particle diameter of smaller than the thickness of the back layer and not smaller than 1/5 of the thickness thereof, and the maximum particle diameter of not larger than 11/10 of the thickness of the back layer.

    摘要翻译: 在包括非磁性载体的磁记录介质中,设置在所述载体的一个表面上的磁记录层和设置在所述载体的另一表面上的含有炭黑的背层,其中所述背层的厚度不大于0.6μm 并且含有莫氏硬度不小于5的无机填料粉末,平均粒径小于背层厚度,不小于其厚度的1/5,最大粒径 不大于背层厚度的11/10。

    Magnetic recording medium
    25.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US4803121A

    公开(公告)日:1989-02-07

    申请号:US109013

    申请日:1987-10-16

    IPC分类号: C09D5/23 G11B5/708 G11B5/70

    摘要: A magnetic recording medium is disclosed, comprising a non-magnetic support having thereon a magnetic layer comprising ferromagnetic fine particles, a binder, and .alpha.-alumina particles having an average size of from about 0.1 to 0.3 .mu.m, provided that the number of .alpha.-alumina particles having a particle size of larger than 0.05 .mu.m is at least equal to the number of .alpha.-alumina particles having a particle size of up to 0.05 .mu.m.

    摘要翻译: 公开了一种磁记录介质,其包括非磁性载体,其上具有包含铁磁细颗粒的磁性层,粘合剂和平均尺寸为约0.1至0.3μm的α-氧化铝颗粒,条件是α 粒径大于0.05μm的氧化铝粒子至少等于粒径达0.05μm的α-氧化铝粒子的数量。

    Photographic support
    28.
    发明授权
    Photographic support 失效
    摄影支持

    公开(公告)号:US5567576A

    公开(公告)日:1996-10-22

    申请号:US447693

    申请日:1995-05-23

    CPC分类号: G03C1/7954

    摘要: A photographic support having good adhesion to a photographic emulsion layer formed thereon without physical surface modification. The support comprises a uniaxially or biaxially stretched polyester film and has at least (1) a main layer containing a polyester and (2) one or two surface layers. At least one of the surface layers comprises a substantially noncrystalline polyester. Furthermore, when used in the form of a roll film, substantially no curling of the support remains upon development.

    摘要翻译: 具有与形成在其上的感光乳剂层的良好粘附性而不进行物理表面改性的照相底片。 载体包括单轴或双轴拉伸的聚酯薄膜,并且至少具有(1)含有聚酯的主层和(2)一个或两个表面层。 至少一个表面层包含基本上非结晶的聚酯。 此外,当以卷膜的形式使用时,在显影时基本上不保持载体的卷曲。