公开(公告)号：US5750233A

公开(公告)日：1998-05-12

申请号：US670667

申请日：1996-06-26

申请人： Hiroshi Ogawa ,  Tuneo Yoshida ,  Shinichi Kato

发明人： Hiroshi Ogawa ,  Tuneo Yoshida ,  Shinichi Kato

IPC分类号： G11B5/70 ,  C09D5/23 ,  C09D7/12 ,  G11B5/706 ,  G11B5/708

CPC分类号： G11B5/70615 ,  G11B5/7085 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/24967 ,  Y10T428/25 ,  Y10T428/256 ,  Y10T428/265 ,  Y10T428/31609 ,  Y10T428/31935

摘要： A magnetic recording medium is disclosed, comprising a non-magnetic support having thereon a magnetic layer containing a ferromagnetic metal power and a binder resin as a main component and an abrasive as a sub-component, wherein the ferromagnetic metal powder contains iron as a main component and aluminum in an amount of from 1 to 25 atm % based on the Fe atom, the magnetic layer contains abrasive particles having a Moh's hardness of 6 or more in an amount of from 4 to 18 parts by weight per 100 parts by weight of the ferromagnetic metal powder, and the abrasives exposure unit having a size of 0.3 .mu.m or more observed through an electron microscope on the magnetic layer surface is 3.5 pieces/100 .mu.m.sup.2 or less.

摘要翻译： 公开了一种磁记录介质，包括其上具有含有铁磁金属功率的磁性层和粘合剂树脂作为主要组分的非磁性载体和作为副组分的研磨剂，其中铁磁性金属粉末含有铁作为主要 组分和铝的含量为1〜25atm％，磁性层的摩尔硬度为6以上的磨粒为4〜18重量份，相对于100重量份 强磁性金属粉末和在磁性层表面上通过电子显微镜观察到的尺寸为0.3μm以上的研磨剂曝光单元为3.5个/100μm2以下。

公开(公告)号：US4533968A

公开(公告)日：1985-08-06

申请号：US428510

申请日：1982-09-29

申请人： Tuneo Yoshida ,  Kengo Oishi ,  Motohiko Yagi

发明人： Tuneo Yoshida ,  Kengo Oishi ,  Motohiko Yagi

IPC分类号： C04B35/46 ,  B65H23/00 ,  C04B35/468 ,  G11B15/60

CPC分类号： G11B15/60 ,  C04B35/4682

摘要： A ceramic guide for tape-like materials such as magnetic recording tapes, movie films, and microfilms, and a process for producing such ceramic guides are described. The ceramic guide is a sintered product of (A) 98 to 93 parts by weight of barium titanate, (B) 2 to 7 parts by weight of a silicate inorganic binder, and (C) 0.2 to 2 parts by weight, per 100 parts by weight of (A) and (B), of lanthanum oxide. The ceramic guide meets the requirements for guides for use in, e.g., small sized video cassettes, is non-magnetic, electrically conductive and has anti-static properties and, therefore, it does not generate static charge and has a low coefficient of friction during running of tape-like materials in contact therewith.

摘要翻译： 描述了用于诸如磁记录带，电影胶片和微缩胶片的带状材料的陶瓷导向器，以及用于制造这种陶瓷导向件的方法。 陶瓷导向件是（A）98〜93重量份钛酸钡，（B）2〜7重量份硅酸盐无机粘合剂，（C）每100重量份0.2〜2重量份的烧结体 （A）和（B））氧化镧。 陶瓷导轨符合用于例如小尺寸录像带的导轨的要求，是非磁性的，导电的并具有防静电性能，因此，它不产生静电荷并且具有低摩擦系数 与其接触的带状材料的运行。