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公开(公告)号:GB2177534A
公开(公告)日:1987-01-21
申请号:GB8613432
申请日:1986-06-03
Applicant: BASF AG
Inventor: GRUEHN DIETRICH , FEHRENBACH HUBERT , HOLL NORBERT
IPC: G11B23/033 , G11B23/50 , G11B23/04
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.
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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.
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公开(公告)号:DE3519691A1
公开(公告)日:1986-12-18
申请号:DE3519691
申请日:1985-06-01
Applicant: BASF AG
Inventor: GRUEHN DIETRICH , ZWINTZSCHER KURT , FEHRENBACH HUBERT
IPC: G11B23/033 , G11B23/50 , B65D85/42
Abstract: A film web, from which cut-to-size pieces (1) for the jackets are punched out, is provided by means of a printing process with an electrically conductive coating (6) which, at the locations (5) at which the cut-to-size piece is welded after folding to form a closed jacket, runs into a line gridwork (7), so that between the lines coating-free locations are available, required for the welding.
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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.
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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.
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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.
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7.
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
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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公开(公告)号:DE2254981A1
公开(公告)日:1974-06-12
申请号:DE2254981
申请日:1972-11-10
Applicant: BASF AG
Inventor: MAHLER KARL DIPL ING DR , FEHRENBACH HUBERT , KRUG ARIBERT , FALE ROLAND DR
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公开(公告)号:AT46590T
公开(公告)日:1989-10-15
申请号:AT85107310
申请日:1985-06-13
Applicant: BASF AG
Inventor: FEHRENBACH HUBERT , KOCH VOLKER DR , BOESE BERNHARD
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公开(公告)号:FR2588687B3
公开(公告)日:1987-10-30
申请号:FR8613880
申请日:1986-10-06
Applicant: BASF AG
Inventor: GRUEHN DIETRICH , HACK JOACHIM , FEHRENBACH HUBERT , RUDOLF PETER , HOLL NORBERT
IPC: G11B23/033 , G11B23/03 , G11B3/58
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