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：DE3560021D1

公开(公告)日：1987-01-02

申请号：DE3560021

申请日：1985-02-22

Applicant: BASF AG

Inventor： BALZ WERNER DR ,  KOVACS JENOE DR ,  MUENZNER WULF DR DIPL ING ,  ROLLER HERMANN

IPC: C09D5/23 ,  C09D7/12 ,  G11B5/708

Abstract: Magnetic recording media consist of a non-magnetic base and a magnetic layer firmly bonded thereto, the magnetic layer containing further additives in addition to ferromagnetic metal powder, an organic binder, a metal oxide powder and conventional assistants.

公开(公告)号：DE3438092A1

公开(公告)日：1986-04-24

申请号：DE3438092

申请日：1984-10-18

Applicant: BASF AG

Inventor： KOHL ALBERT ,  MELZER MILENA ,  LEHNER AUGUST ,  SCHNEIDER NORBERT ,  KOESTER EBERHARD DR ,  BALZ WERNER DR ,  SOMMERMANN FRIEDRICH DR ,  RICKER ERNST DR

IPC: G11B5/702 ,  C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D163/00 ,  C09D167/00 ,  C09D171/00 ,  C09D171/12 ,  C09D175/00 ,  C09D175/04 ,  C10M105/58 ,  C10N40/18 ,  G11B5/708 ,  G11B5/71 ,  B05D5/12

Abstract: In magnetic recording media consisting of a non-magnetic base and, bonded on top of this, one or more magnetizable layers based on magnetic material finely dispersed in a polymer binder, a lubricant and further conventional additives, the lubricant used is a triethanolamine esterified with oleic acid.

公开(公告)号：DE3427685A1

公开(公告)日：1986-02-06

申请号：DE3427685

申请日：1984-07-27

Applicant: BASF AG

Inventor： LEHNER AUGUST ,  BALZ WERNER DR ,  LENZ WERNER DR ,  KOHL ALBERT ,  HEIL GUENTER DR

IPC: C09D5/23 ,  C09D175/04 ,  C09D175/06 ,  C09D175/08 ,  C09D175/14 ,  G11B5/702 ,  G11B5/842

Abstract: Layer-type magnetic recording media are produced by dispersing a finely divided magnetically anisotropic material in a binder which consists of not less than 40% of a radiation-curable aqueous binder dispersion, applying the dispersion onto a non-magnetic base, orienting the magnetically anisotropic material and drying and crosslinking the applied layer by means of UV or high-energy electron radiation.

公开(公告)号：DE3427683A1

公开(公告)日：1986-02-06

申请号：DE3427683

申请日：1984-07-27

Applicant: BASF AG

Inventor： BALZ WERNER DR ,  KOVACS JENOE DR ,  LECHNER HILMAR ,  SCHAEFER DIETER DR ,  BUETHE INGOLF DR

IPC: G11B5/702 ,  C08F299/02 ,  C09D5/23 ,  C09D171/00 ,  C09D171/12 ,  C09D175/06 ,  G11B5/73 ,  G11B5/738 ,  G11B5/842 ,  B05D5/12

Abstract: Layer-type magnetic recording media are produced by applying a dispersion of a magnetically anisotropic material in a binder solution onto a flexible plastic base provided with an adhesion-promoting layer and then solidifying the magnetic layer, by a method in which the adhesion-promoting layer consists of a radiation-curable aqueous dispersion of a polymer.

公开(公告)号：DE3267453D1

公开(公告)日：1985-12-19

申请号：DE3267453

申请日：1982-08-27

Applicant: BASF AG

Inventor： BALZ WERNER DR ,  MUENZNER WULF DR ,  SCHOMANN KLAUS DIETER DR ,  BERGER HEINZ ,  ROOS ROLAND

IPC: G11B15/60 ,  G11B23/04 ,  G11B23/087 ,  G11B23/50 ,  H05F3/02

Abstract: In a tape cassette, particularly a video tape cassette, equalization of electrostatic charges between the two faces of the tape is effected by a connector element or connector elements electrically connecting at least one of two electrically conducting guide elements contacting the front of the tape and provided on the two sides, respectively, of the cassette with at least the associated one of two electrically conducting tape deflecting elements provided in the two respective front corners of the tape cassette. In this manner sticking of the tape to the deflecting elements due to electrostatic attraction therebetween and also the build-up of electrostatic charges along the tape path parallel to the front of the cassette housing due to the transporting of such charges from the deflecting elements as a result of the tape travel, are counteracted.

公开(公告)号：DE3407721A1

公开(公告)日：1985-09-12

申请号：DE3407721

申请日：1984-03-02

Applicant: BASF AG

Inventor： BALZ WERNER DR ,  KOVACS JENOE DR ,  MUENZNER WULF DR ,  ROLLER HERMANN

IPC: C09D5/23 ,  C09D7/12 ,  G11B5/708 ,  G11B5/70 ,  G11B5/72

Abstract: Magnetic recording media consist of a non-magnetic base and a magnetic layer firmly bonded thereto, the magnetic layer containing further additives in addition to ferromagnetic metal powder, an organic binder, a metal oxide powder and conventional assistants.

公开(公告)号：DE3347531A1

公开(公告)日：1985-07-11

申请号：DE3347531

申请日：1983-12-30

Applicant: BASF AG

Inventor： LEHNER AUGUST ,  KOHL ALBERT ,  ROLLER HERMANN ,  BALZ WERNER DR ,  KOESTER EBERHARD DR ,  SOMMERMANN FRIEDRICH DR

IPC: C09D5/23 ,  C09D7/12 ,  C10M105/24 ,  C10M105/68 ,  C10N10/04 ,  C10N40/18 ,  G11B5/71 ,  G11B5/72 ,  G11B5/68 ,  H01F10/28 ,  C09D3/727 ,  B05D5/12

Abstract: Magnetic recording media consisting of a non-magnetic base and, applied thereto, one or more firmly adhering magnetizable layers based on magnetic material finely dispersed in a polymeric binder, at least one lubricant and other conventional additives, wherein the lubricant used is a mixture of zinc stearate which has been rendered hydrophilic and stearylamide.

公开(公告)号：DE3068855D1

公开(公告)日：1984-09-13

申请号：DE3068855

申请日：1980-05-05

Applicant: BASF AG

Inventor： LEHNER AUGUST ,  HARTMANN HEINRICH DR ,  BACHMANN RUDOLF DR ,  ALBERT KOHL ,  SPOOR HERBERT DR ,  MAHLER KARL DR ,  BALZ WERNER DR

IPC: G11B5/70 ,  C09D5/23 ,  G11B5/702 ,  G11B5/842