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    2.
    发明专利
    未知

    公开(公告)号：FR2576444A3

    公开(公告)日：1986-07-25

    申请号：FR8600924

    申请日：1986-01-23

    Applicant: BASF AG

    Inventor： FEHRENBACH HUBERT ,  FEHRENBACH WERNER ,  GRUEHN DIETRICH ,  ZWINTZSCHER KURT

    IPC: G11B23/033 ,  G11B23/50

    Abstract: A protective jacket for recording media, in particular flexible recording media, is provided with a network or grid of conductor paths (6) to counteract electric charges, Advantageously, the jacket blank (1) is coated uniformly, in particular on both sides, with linear conductor paths (6). The protective jacket can be used for storing any recording media outside a recording/playback apparatus, or for operating any recording media inside such an apparatus. It is advantageous if, in the areas in which the blank (1) is welded to form a partially or completely closed jacket after folding, a conductor path grid or network is provided so that areas which are free of the conductive layer and are of prescribed dimensions are available between the conductor paths, such areas being necessary for welding.

    4.
    发明专利
    未知

    公开(公告)号：FR2583201A3

    公开(公告)日：1986-12-12

    申请号：FR8608124

    申请日：1986-06-05

    Applicant: BASF AG

    Inventor： GRUEHN DIETRICH ,  FEHRENBACH HUBERT ,  HOLL NORBERT

    IPC: G11B23/033 ,  G11B23/50 ,  G11B23/02

    Abstract: A protective jacket, in particular for recording media, preferably magnetic films, is provided with at least one stiffened region in the immediate vicinity of the read/write area, thus permitting more thorough cleaning of the recording medium and smoother running of the latter. Stiffened region(s) can be produced economically by printing on strips of ink.

    PROTECTIVE JACKET FOR A DISK-SHAPED RECORDING MEDIUM
    5.
    发明专利
    PROTECTIVE JACKET FOR A DISK-SHAPED RECORDING MEDIUM 未知

    公开(公告)号：GB2171240A

    公开(公告)日：1986-08-20

    申请号：GB8601537

    申请日：1986-01-22

    Applicant: BASF AG

    Inventor： FEHRENBACH HUBERT ,  FEHRENBACH WERNER ,  GRUEHN DIETRICH ,  ZWINTZSCHER KURT

    IPC: G11B23/033 ,  G11B23/50

    Abstract: A protective jacket for recording media, in particular flexible recording media, is provided with a network or grid of conductor paths (6) to counteract electric charges, Advantageously, the jacket blank (1) is coated uniformly, in particular on both sides, with linear conductor paths (6). The protective jacket can be used for storing any recording media outside a recording/playback apparatus, or for operating any recording media inside such an apparatus. It is advantageous if, in the areas in which the blank (1) is welded to form a partially or completely closed jacket after folding, a conductor path grid or network is provided so that areas which are free of the conductive layer and are of prescribed dimensions are available between the conductor paths, such areas being necessary for welding.

    6.
    发明专利
    未知

    公开(公告)号：FR2576444B3

    公开(公告)日：1987-02-06

    申请号：FR8600924

    申请日：1986-01-23

    Applicant: BASF AG

    Inventor： FEHRENBACH HUBERT ,  FEHRENBACH WERNER ,  GRUEHN DIETRICH ,  ZWINTZSCHER KURT

    IPC: G11B23/033 ,  G11B23/50

    Abstract: A protective jacket for recording media, in particular flexible recording media, is provided with a network or grid of conductor paths (6) to counteract electric charges, Advantageously, the jacket blank (1) is coated uniformly, in particular on both sides, with linear conductor paths (6). The protective jacket can be used for storing any recording media outside a recording/playback apparatus, or for operating any recording media inside such an apparatus. It is advantageous if, in the areas in which the blank (1) is welded to form a partially or completely closed jacket after folding, a conductor path grid or network is provided so that areas which are free of the conductive layer and are of prescribed dimensions are available between the conductor paths, such areas being necessary for welding.

    Process and apparatus for the surface machining of substrate plates for magnetic storage discs
    7.
    发明专利
    Process and apparatus for the surface machining of substrate plates for magnetic storage discs 未知

    公开(公告)号：DE3446306A1

    公开(公告)日：1985-07-04

    申请号：DE3446306

    申请日：1984-12-19

    Applicant: BASF AG

    Inventor： FEHRENBACH HUBERT ,  KOCH VOLKER DR ,  BOESE BERNHARD

    IPC: B23P25/00 ,  B23Q1/34 ,  B23Q1/36 ,  B25B11/00 ,  G11B5/84

    Abstract: Before they are coated with the magnetisable material, the substrate plates are machined on a precision lathe in such a way that the annular surface (2) intended for the recording area is convexly curved on both sides of the plate. For this purpose, during machining, the substrate plate (1) is held on the lathe chuck (4) with a concave curvature of the annular surface and is machined off flat with a purely radial advancing motion of the cutting tool (11), or is held on a flat lathe chuck (21) and is machined off with an advancing motion of the tool (16) which corresponds to the desired convex curvature of the annular surface (2). In the case of the first of these two machining methods, after removal from the lathe chuck (4), the elastically deformed substrate plate relaxes to give a convexly curved annular surface.

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