Manufacture of magnetic recording media
    11.
    发明授权
    Manufacture of magnetic recording media 失效
    制造磁记录介质

    公开(公告)号:US4180597A

    公开(公告)日:1979-12-25

    申请号:US940462

    申请日:1978-09-08

    CPC分类号: G11B5/7013 Y10S428/90

    摘要: A process for the manufacture of a magnetic recording medium by producing a dispersion of a finely divided anisotropic magnetic material and conventional additives in a solution of a polymeric binder in an organic solvent, applying a layer of the dispersion to a nonmagnetizable base material, then orienting the anisotropic magnetic material by means of a magnetic field, and drying the layer, wherein a compound of the formula (I) ##STR1## where R.sup.1 is straight-chain or branched akyl of 2 to 10 carbon atoms, cycloalkyl of 6 to 10 carbon atoms or aralkyl of 7 to 14 carbon atoms and R.sup.2 is hydrogen or one of the radicals given in the definition of R.sup.1, is added to the dispersion.

    摘要翻译: 一种通过在聚合物粘合剂在有机溶剂中的溶液中制备精细分散的各向异性磁性材料和常规添加剂的分散体来制造磁记录介质的方法,将一层分散体施加到不可磁化的基材上,然后定向 通过磁场对各向异性磁性材料进行干燥,并干燥该层,其中式(I)的化合物其中R 1是2至10个碳原子的直链或支链烷基,6个环烷基 至10个碳原子或7至14个碳原子的芳烷基,并且R 2是氢或R1的定义中给出的一个基团加入到分散体中。

    Apparatus for the manufacture of a jacket for a flexible disk for data
recording
    14.
    发明授权
    Apparatus for the manufacture of a jacket for a flexible disk for data recording 失效
    用于制造用于数据记录的软盘的护套的装置

    公开(公告)号:US4304621A

    公开(公告)日:1981-12-08

    申请号:US177855

    申请日:1980-08-14

    摘要: An apparatus for the manufacture of a jacket, comprising two cover sheets joined to one another, for a flexible disk for data recording, the cover sheets and the nonwoven lining being punched out in the form of blanks including the functional apertures, and the cover sheet blank and the nonwoven blank being joined to one another and then folded to form the jacket, wherein the sheet material for the cover sheets is transferred from a magazine, with the aid of mechanical, air-operated grippers provided with positioning means, to an assembly surface and is there positioned, the sheet of nonwoven material from a second magazine is tacked onto the cover sheet material by spot-welding and is then joined thereto over the entire surface by thermal welding, thereafter the cover sheet material thus provided with the nonwoven covering is transferred to a holder frame and then conveyed, with this frame, to a punching device where it is punched out to form a blank provided with the functional apertures, subsequently the blank is removed from the holder frame by means of mechanical, air-operated grippers and is placed in the correct position on a carrier and folded to form the jacket, and at the same time the folds are stabilized by heating and subsequently cooling the material in the region of the folds, and the surfaces which come into contact on folding are welded to one another in the marginal portions of the jacket.

    摘要翻译: 一种用于制造护套的装置,包括彼此连接的两个盖片,用于数据记录的柔性盘,覆盖片和非织造衬里以包括功能孔的毛坯的形式冲压出来,盖片 坯料和非织造坯料彼此接合,然后折叠以形成护套,其中用于覆盖片的片材材料借助于设置有定位装置的机械的气动夹具从盒转移到组件 表面并且在那里定位,来自第二料仓的非织造材料片材通过点焊被粘合到覆盖片材料上,然后通过热焊接在整个表面上与其接合,然后由此提供无纺布覆盖物 被转移到支架框架上,然后用该框架输送到冲压装置,在该冲孔装置中,冲压装置形成设置有功能性apert的坯料 随后通过机械的气动夹具将坯料从支架框架上取下,并将其放置在载体上的正确位置并折叠以形成夹套,并且同时通过加热使其稳定,随后 在折叠区域中冷却材料,并且在折叠时接触的表面在夹套的边缘部分彼此焊接。