公开(公告)号：DE2611666A1

公开(公告)日：1977-09-22

申请号：DE2611666

申请日：1976-03-19

Applicant: BASF AG

Inventor： SENKPIEL WERNER DIPL CHEM DR ,  SCHOEETTLE KLAUS DIPL ING ,  WITTKAMP HEINRICH DIPL ING ,  UHL KARL DIPL ING DR

IPC: G11B5/70 ,  B65H23/28 ,  C09D5/23 ,  G11B5/738 ,  G11B15/295 ,  G11B15/60 ,  G11B15/62 ,  G11B5/68

Abstract: The invention is directed to a tape transport mechanism for recording and playing back video signals comprising a contact winding mechanism with tape-guiding means at the capstan and a magnetic tape in which the substrate is a polyethylene terephthalate film. The coated side of the tape, during transport, is in contact with the guide surface of the guide means, and no part of the transport mechanism at which slip could occur during the tape transport is allowed to be in contact with the tape substrate. The tape is wound with its substrate on the inside and its coated side is preferably abrasive with respect to the guide surface, which latter may advantageously consist either of steel or a ceramic material. The bonding agent of the magnetic dispersion - preferably a chromium dioxide dispersion - may be prepared from a polyurethane/polyvinyl chloride mixture which imparts the desired hardness to the tape. The arrangement can be advantageously employed with any kind of record/playback apparatus for video signals which includes a stationary head and develops high tape advance speeds.

公开(公告)号：DE2512456A1

公开(公告)日：1976-10-07

申请号：DE2512456

申请日：1975-03-21

Applicant: BASF AG

Inventor： SOMMER FRANZ ING GRAD ,  UHL KARL DIPL ING DR ,  LOESER WERNER DIPL CHEM DR ,  FELLEISEN PETER DIPL ING ,  HAMMERSCHMITT PETER DIPL ING ,  SCHNEIDER RICHARD DIPL PHYS DR

IPC: G11B5/716 ,  G11B5/68 ,  B32B15/00 ,  H01F10/00

Abstract: The disc type magnetic data record carrier consists of a carrier material (S), a magnetic film (1) for the pick-up of servo information, a non-magnetic intermediate film (Z) and a second magnetic film (2) for the pick-up of data-information. The carrier material (S) is typically provided on both sides with foils. The film strength of each magnetic film is typically 0.06 to 0.6 um and the non-magnetic film has a film strength of 10 to 30 times that of the weaker films. The ratio of the coercive force between the first and second metal magnetic films is between 0.5 and 2.0. The surface of the second magnetic film is provided with a protective film.

公开(公告)号：DE2428690A1

公开(公告)日：1976-01-02

申请号：DE2428690

申请日：1974-06-14

Applicant: BASF AG

Inventor： VAETH GUENTER ,  HARTMANN HANS-JOERG DIPL ING D ,  FALK ROLAND DIPL CHEM DR ,  UHL KARL DIPL ING DR ,  GUTERMANN WINFREID ,  MAYER DIETER DR

IPC: G11B5/71 ,  G11B5/72

Abstract: A laminated magnetogram carrier, esp. UTR tape, with a layer, based on finely-divided magnetic pigment dispersed in a binder and suitable for magnetic recording, on a non-magnetisable support, contains 0.2-4, pref. 0.4-2 wt%, w.r.t. the wt. of the magnetic pigment, of a mixt. of aliphatic 14-18C monocarboxylic acids with m.pt. 50-60, pref. 52-55 degrees C. The acids are pref. added to the dispersion before application to the support.

公开(公告)号：DE2730719A1

公开(公告)日：1979-01-25

申请号：DE2730719

申请日：1977-07-07

Applicant: BASF AG

Inventor： MANZKE KLAUS ,  HAMMERSCHMITT PETER DIPL ING ,  SCHNEIDER RICHARD ,  UHL KARL DIPL ING DR

IPC: G11B21/12 ,  G11B5/54 ,  G11B5/50

Abstract: An automatic loading/unloading device for at least one magnetic head, consisting essentially of a support for the head and a spring-like member incorporating a ramp, the head support being decouplable from the spring-like member during loading and recouplable thereto upon unloading. The loading/unloading device of the invention can be used with advantage in any type of magnetic storage system which employs rigid magnetic media and magnetic heads which can be positioned relative to said magnetic media.

公开(公告)号：DE2612854A1

公开(公告)日：1977-10-13

申请号：DE2612854

申请日：1976-03-26

Applicant: BASF AG

Inventor： KOHL LAMBERT ING GRAD ,  SCHNEIDER RICHARD DIPL PHYS DR ,  UHL KARL DIPL ING DR

IPC: G06K13/14 ,  G11B17/22 ,  G11B5/016

Abstract: A magazine for transport and operation in a device for a plurality of film-like flat recording media, especially of floppy disks. Details of the magazine according to the invention relate to a part which receives the recording medium, a lid, a mechanism for locking the said parts together, and a guide and gripper part.

公开(公告)号：DE2446486A1

公开(公告)日：1976-04-15

申请号：DE2446486

申请日：1974-09-28

Applicant: BASF AG

Inventor： VAETH GUENTER ,  HARTMANN HANS-JOERG DIPL ING D ,  UHL KARL DIPL ING DR ,  GUTERMANN WINFRIED ,  BERGER HEINZ ING GRAD

IPC: G11B23/50 ,  G11B5/008

Abstract: The flexible cleaning arrangement (11) is provided with openings for loosening the particles whilst in contact with the surface of the magnetic tape (6) and moves relative to the movement of the magnetic tape (6). The particles loosened from the magnetic tape (6) are continuously sucked through the loosening openings (12). A number of loosening openings (12) can be indirectly altered, preferably by a rapid alternating movement of the cleaning arrangement (11) relative to the surface of the magnetic tape (6).

公开(公告)号：DE2446488A1

公开(公告)日：1976-04-08

申请号：DE2446488

申请日：1974-09-28

Applicant: BASF AG

Inventor： KOESTER EBERHARD DIPL PHYS DR ,  DEIGNER PAUL DR ,  FALK ROLAND DIPL CHEM DR ,  HUBER GEORG ,  UHL KARL DIPL ING DR

IPC: G01R33/12 ,  G11B5/00 ,  G11B5/84 ,  G01R33/02

公开(公告)号：DE2424106A1

公开(公告)日：1975-12-04

申请号：DE2424106

申请日：1974-05-17

Applicant: BASF AG

Inventor： ELFF KLAUS ING GRAD ,  DEIGNER PAUL DR ,  UHL KARL DIPL ING DR ,  MAYER DIETER DR

IPC: G01N3/56 ,  G11B5/00 ,  G11B5/187 ,  G07C3/00 ,  G11B5/46

Abstract: Wear resistance test rig is used for tape guide elements of magnetic tape recorders. The surface which is in contact with the abrasive magnetic tape is fitted with recesses of a geometrical form where the depth has a defined ratio to the surface area. The depth is measured before and after a wear test and the wear depth is calculated from that. This is a simpler method than use of vapour deposits of metallic films, and it is easier to interpret than readings taken by the radioactive isotope method. A double magnetic sound head (8) has on its contact face (7) several rhomboidal impressions (6). These impressions are arranged symmetrically to the gaps (9, 10) between the pole faces (11, 12). The dotted lines (13, 14) indicate the boundaries of the contact surface (15).

公开(公告)号：DE2723140A1

公开(公告)日：1978-12-07

申请号：DE2723140

申请日：1977-05-23

Applicant: BASF AG

Inventor： MANZKE KLAUS ,  MANNERSCHMITT PETER DIPL ING ,  UHL KARL DIPL ING DR

IPC: H02K33/18 ,  G11B5/54 ,  G11B5/55 ,  G11B21/02 ,  G11B21/08 ,  G11B21/10

公开(公告)号：DE2712622A1

公开(公告)日：1978-09-28

申请号：DE2712622

申请日：1977-03-23

Applicant: BASF AG

Inventor： SCHOETTLE KLAUS DIPL ING ,  UHL KARL DIPL ING DR ,  WITTKAMP HEINRICH DIPL ING ,  DOBLER PETER ,  LEWIN HELMUT

IPC: G11B15/67 ,  G11B23/107 ,  G11B25/06 ,  G11B23/04

Abstract: The cartridge arrangement of the present invention enables recording and/or playback apparatus to be used with cartridges of various sizes, the cartridges being provided with releasable locking means and, after the release of such means, being able to be opened to permit the tape roll(s) to be rotated on the recording and/or playback apparatus. The cartridge arrangement is applicable to every type of recording medium in tape or strip form in systems employing cartridges in which there is a need for using cartridges of various sizes, especially in the case of the recording and playback of magnetic signals.