公开(公告)号：DE3560046D1

公开(公告)日：1987-02-12

申请号：DE3560046

申请日：1985-02-09

Applicant: BASF AG

Inventor： MELZER MILENA ,  ROLLER HERMANN ,  SCHNEIDER NORBERT ,  FITTERER HORST ,  MUENZNER WULF DR

IPC: C09D127/06 ,  C09D5/23 ,  C09D163/00 ,  G11B5/72 ,  G11B5/73 ,  G11B5/735

Abstract: A process for the production of magnetic recording media by applying a magnetic layer, which consists essentially of magnetic material finely dispersed in organic polymers, to one side of a flexible base, and applying a non-magnetizable backing coating which is free of inorganic solids to that side of the base which is opposite the magnetic layer, wherein the backing coating consists of two or more polymers which are incompatible with one another and have precipitated from a solvent mixture, and magnetic recording media produced by this process.

公开(公告)号：YU36077B

公开(公告)日：1981-11-13

申请号：YU80372

申请日：1972-03-27

Applicant: BASF AG

Inventor： NORBERT SCHAEFFER ,  SCHAEFFER NORBERT ,  HORST FITTERER ,  FITTERER HORST ,  KARL UHL ,  UHL KARL ,  GEORG SCHNELL ,  SCHNELL GEORG ,  WILHELMUS ANDRIESSEN ,  ANDRIESSEN WILHELMUS

IPC: G11B15/60 ,  G11B20060101 ,  G11B15/00 ,  G11B15/26 ,  G11B23/04 ,  G11B23/08

公开(公告)号：FR2498363A1

公开(公告)日：1982-07-23

申请号：FR8200987

申请日：1982-01-22

Applicant: BASF AG

Inventor： FITTERER HORST ,  KOOB HUBERT ,  NESTLER BERT

IPC: G11B23/087 ,  G11B23/04

Abstract: In a magnetic tape cassette, especially a compact cassette, at least one hole in the conventional liners is provided, according to the invention, with at least one raised edge portion which is located between the aperture in the housing wall for admitting the drive spindle and the inner wall of the hub, and serves as a resilient support for the hub.

公开(公告)号：IT8220473V0

公开(公告)日：1982-01-14

申请号：IT2047382

申请日：1982-01-14

Applicant: BASF AG

Inventor： FITTERER HORST ,  KOOB HUBERT ,  NESTLER BERT

IPC: G11B23/087 ,  G11B

Abstract: In a magnetic tape cassette, especially a compact cassette, at least one hole in the conventional liners is provided, according to the invention, with at least one raised edge portion which is located between the aperture in the housing wall for admitting the drive spindle and the inner wall of the hub, and serves as a resilient support for the hub.

公开(公告)号：DE3368337D1

公开(公告)日：1987-01-22

申请号：DE3368337

申请日：1983-06-15

Applicant: BASF AG

Inventor： FITTERER HORST ,  ROOS ROLAND ,  MUENZNER WULF DR ,  BALZ WERNER DR ,  BERGER HEINZ

IPC: G11B23/04 ,  G11B23/087

Abstract: A tape cassette, in particular a video cassette, comprises two flanged reels and, between the flanges of each reel, a spring member as a biassing means to prevent the tape from slipping off the roll or folding over. The spring members can be attached to the side walls or rear wall of the housing, and their free ends constantly bear against the peripheries of the tape rolls. In specific embodiment the spring member advantageously includes the braking spring for a reel-braking device. By using a conductive material on one or both sides of the spring member and appropriately arranging the spring member relative to a tape guide element or to an element grounded on the tape recorder, it is possible to directly prevent tape loop formation, which is a cause of tape slippage and folding-over. Moreover, tape winding and unwinding are improved.

公开(公告)号：DE3405960A1

公开(公告)日：1985-08-22

申请号：DE3405960

申请日：1984-02-18

Applicant: BASF AG

Inventor： MELZER MILENA ,  ROLLER HERMANN ,  SCHNEIDER NORBERT ,  FITTERER HORST ,  MUENZNER WULF DR

IPC: C09D127/06 ,  C09D5/23 ,  C09D163/00 ,  G11B5/72 ,  G11B5/73 ,  G11B5/735 ,  G11B5/842 ,  G11B5/68 ,  H01F10/26 ,  C09D3/48 ,  B05D5/12

Abstract: A process for the production of magnetic recording media by applying a magnetic layer, which consists essentially of magnetic material finely dispersed in organic polymers, to one side of a flexible base, and applying a non-magnetizable backing coating which is free of inorganic solids to that side of the base which is opposite the magnetic layer, wherein the backing coating consists of two or more polymers which are incompatible with one another and have precipitated from a solvent mixture, and magnetic recording media produced by this process.

公开(公告)号：CA987284A

公开(公告)日：1976-04-13

申请号：CA159080

申请日：1972-12-13

Applicant: BASF AG

Inventor： FITTERER HORST ,  SCHAEFFER NORBERT

IPC: G11B23/08 ,  G11B23/087

Abstract: A guide element for magnetic tapes to be wound in the form of packs on flangeless spools, particularly for tapes in magnetic tape cartridges, which is arranged in a fixed position near the periphery of the pack at maximum pack diameter and provided with a guide surface and guide flanges. Such elements improve guidance of the turn of tape approaching and/or leaving the pack, resulting in a stable and accurate winding on the spool and in undisturbed tape travel.

公开(公告)号：AU4032272A

公开(公告)日：1973-09-27

申请号：AU4032272

申请日：1972-03-23

Applicant: BASF AG

Inventor： SCHAEFFER NORBERT ,  FITTERER HORST ,  UHL KARL ,  SCHNELL GEORG ,  ANDRIESSEN WILHELMUS

IPC: G11B15/60 ,  G11B20060101 ,  G11B15/00 ,  G11B15/26 ,  G11B23/04 ,  G11B23/08 ,  G11B23/087 ,  G11B15/66

Abstract: Guide elements for magnetic tapes wound or to be wound in the form of packs on flangeless spools, the guide elements being movable in the plane of rotation of the packs. At least part of the guide elements is located between the pack and the outermost winding and thus constantly guides the tape as it is wound or unwound, resulting in optimal tape guidance and consequently in a stable and accurate winding on the spool.

公开(公告)号：DE3176740D1

公开(公告)日：1988-06-16

申请号：DE3176740

申请日：1981-09-21

Applicant: BASF AG

Inventor： STUMPFI WERNER DR ,  ENGEL FRIEDRICH ,  FITTERER HORST ,  KREIMES NORBERT ,  PFEFFERKORN DIETMAR ,  SCHAEFFER NORBERT ,  SCHMIDTS KURT

IPC: G11B23/04

公开(公告)号：DE3168164D1

公开(公告)日：1985-02-21

申请号：DE3168164

申请日：1981-09-21

Applicant: BASF AG

Inventor： STUMPFI WERNER DR ,  BETTINGER GUENTER ,  ENGEL FRIEDRICH ,  FITTERER HORST ,  KREIMES NORBERT ,  PFEFFERKORN DIETMAR ,  SCHAEFFER NORBERT ,  SCHMIDTS KURT

IPC: G11B15/30 ,  G11B23/04

Abstract: The invention relates to a hub for magnetic tape cassettes, especially compact cassettes, and to magnetic tape cassettes possessing such hubs. In a first embodiment, spring means are provided on the inner periphery of the hub and exert radial pressures on the drive spindle, the spring means consisting, for example, of sprung teeth. In a further embodiment, the teeth have a spring rate of from about 1 P/mm to 40 P/mm. In another embodiment, the hub consists of an inner part and an outer part which can be coupled to one another and between which there is some play after coupling. A large number of specific examples of hubs are given to show possible shapes and arrangements of the teeth, and to show the types of material that can be used. In an advantageous embodiment, the inner part of the two-part hub can also be made a part of the drive spindle on the recorder, which inner part can be coupled with the outer part when the drive spindle enters the cassette.