公开(公告)号：DE3567549D1

公开(公告)日：1989-02-16

申请号：DE3567549

申请日：1985-05-14

Applicant: BASF AG

Inventor： KRAUS GEROLD ,  HUBER WALTER ,  HACK JOACHIM ,  SCHULZE-BERGE KLAUS ,  SOLD ROLAND

IPC: G11B5/56 ,  G11B5/58 ,  G11B5/596 ,  G11B20/18 ,  G11B21/10 ,  G11B23/36

Abstract: A method and an arrangement for detecting error signals in a magnetic disk drive apparatus uses a test disk which has a plurality of test tracks distributed over the recording area and containing special test signals, a distinction being made between orientation, adjustment and azimuth bursts. Based on the normal position of the recording tracks of the magnetic disk, the spacing of the test tracks could depend on the type of step motor if such a motor is used in the positioning device. By special control, hysteresis errors can be measured in addition to tracking errors, eccentricity errors and azimuth errors. An advantageous use is for all types of disk drives, preferably FlexyDisk drives.

公开(公告)号：GB2161140B

公开(公告)日：1987-08-12

申请号：GB8512493

申请日：1985-05-17

Applicant: BASF AG

Inventor： SCHOETTLE KLAUS ,  SOLD ROLAND ,  BRINKMANN UWE ,  WAGNER WERNER

IPC: G11B23/087

Abstract: A support liner (20) for a magnetic tape cassette comprises a coherent double liner whose individual liner parts (20a and 20b) are supported against the inner walls of the cassette to provide a cushioned support for tape rolls of the cassette.

公开(公告)号：ZA8602405B

公开(公告)日：1986-11-26

申请号：ZA8602405

申请日：1986-04-02

Applicant: BASF AG

Inventor： SCHAEFFER NORBERT ,  PFEFFERKORN DIETMAR ,  SOLD ROLAND ,  BRINKMANN UWE ,  KREITNER LUDWIG ,  SIGWALT ROLAND

IPC: G11B23/087 ,  G11B

CPC classification number: G11B23/08764 ,  C10M129/10 ,  C10M129/40 ,  C10M129/54 ,  C10M129/58 ,  C10M133/52 ,  C10M133/56 ,  C10M135/30 ,  C10M137/10 ,  C10M141/10 ,  C10M159/20 ,  C10M159/22 ,  C10M159/24 ,  C10M163/00 ,  C10M2219/046

Abstract: In a tape cassette possessing symmetrically arranged support liners, a compressive force dependent on the tape roll diameter is exerted by the liner and utilized for centering the roll and the tape. Force/diameter relationships, and embodiments of folded liners for achieving individual forces are described. A novel dynamic liner arrangement can be used in any tape cassette possessing high winding speeds and sensitive tapes, with frequently alternating rewind/playback operation.

公开(公告)号：HK78091A

公开(公告)日：1991-10-11

申请号：HK78091

申请日：1991-10-03

Applicant: BASF AG

Inventor： SCHAEFFER NORBERT ,  PFEFFERKORN DIETMAR ,  SOLD ROLAND ,  BRINKMANN UWE ,  KREITNER LUDWIG DR ,  SIGWALT ROLAND

IPC: G11B23/087

Abstract: In a tape cassette possessing symmetrically arranged support liners, a compressive force dependent on the tape roll diameter is exerted by the liner and utilized for centering the roll and the tape. Force/diameter relationships, and embodiments of folded liners for achieving individual forces are described. A novel dynamic liner arrangement can be used in any tape cassette possessing high winding speeds and sensitive tapes, with frequently alternating rewind/playback operation.

公开(公告)号：AU583604B2

公开(公告)日：1989-05-04

申请号：AU5559886

申请日：1986-04-02

Applicant: BASF AG

Inventor： SCHAEFFER NORBERT ,  PFEFFERKORN DIETMAR ,  SOLD ROLAND ,  BRINKMANN UWE ,  KREITNER LUDWIG ,  SIGWALT ROLAND

IPC: G11B23/087 ,  G11B23/04

Abstract: In a tape cassette possessing symmetrically arranged support liners, a compressive force dependent on the tape roll diameter is exerted by the liner and utilized for centering the roll and the tape. Force/diameter relationships, and embodiments of folded liners for achieving individual forces are described. A novel dynamic liner arrangement can be used in any tape cassette possessing high winding speeds and sensitive tapes, with frequently alternating rewind/playback operation.

公开(公告)号：DE3466448D1

公开(公告)日：1987-10-29

申请号：DE3466448

申请日：1984-12-15

Applicant: BASF AG

Inventor： SCHOETTLE KLAUS ,  SOLD ROLAND ,  BRINKMANN UWE ,  WAGNER WERNER DR ING

IPC: G11B23/087

Abstract: A tape cassette, in particular a magnetic tape cassette, is provided, for tape and hub guidance, with bent support liners (7, 8) which are located between the roll (1) or rolls and the adjacent housing wall (6). According to the invention, bent-over or folded-over longitudinal strips (7a, 7b) which are bent at certain angles toward the housing wall (6) support the liners (7, 8) in such a way that it is possible to counteract deformation due to the weight of the rolls of tape. These liners (7, 8) can be used for all cassette recording media, but preferably for those having a very small tape thickness.

公开(公告)号：ZA862405B

公开(公告)日：1986-11-26

申请号：ZA862405

申请日：1986-04-02

Applicant: BASF AG

Inventor： SCHAEFFER NORBERT ,  PFEFFERKORN DIETMAR ,  SOLD ROLAND ,  BRINKMANN UWE ,  KREITNER LUDWIG ,  SIGWALT ROLAND

IPC: G11B23/087 ,  G11B

Abstract: In a tape cassette possessing symmetrically arranged support liners, a compressive force dependent on the tape roll diameter is exerted by the liner and utilized for centering the roll and the tape. Force/diameter relationships, and embodiments of folded liners for achieving individual forces are described. A novel dynamic liner arrangement can be used in any tape cassette possessing high winding speeds and sensitive tapes, with frequently alternating rewind/playback operation.

公开(公告)号：FR2564630B3

公开(公告)日：1986-05-09

申请号：FR8507390

申请日：1985-05-15

Applicant: BASF AG

Inventor： SCHOETTLE KLAUS ,  SOLD ROLAND ,  BRINKMANN UWE ,  WAGNER WERNER

IPC: G11B23/087 ,  G11B23/04

Abstract: A support liner (20) for a magnetic tape cassette comprises a coherent double liner whose individual liner parts (20a and 20b) are supported against the inner walls of the cassette to provide a cushioned support for tape rolls of the cassette.

公开(公告)号：AU4268485A

公开(公告)日：1985-11-21

申请号：AU4268485

申请日：1985-05-17

Applicant: BASF AG

Inventor： KRAUS GEROLD ,  HUBERT WALTER ,  HACK JOACHIM ,  SCHULZE-BERGE KLAUS ,  SOLD ROLAND

IPC: G11B5/56 ,  G11B5/58 ,  G11B5/596 ,  G11B20/18 ,  G11B21/10 ,  G11B23/36 ,  G11B21/02

Abstract: A method and an arrangement for detecting error signals in a magnetic disk drive apparatus uses a test disk which has a plurality of test tracks distributed over the recording area and containing special test signals, a distinction being made between orientation, adjustment and azimuth bursts. Based on the normal position of the recording tracks of the magnetic disk, the spacing of the test tracks could depend on the type of step motor if such a motor is used in the positioning device. By special control, hysteresis errors can be measured in addition to tracking errors, eccentricity errors and azimuth errors. An advantageous use is for all types of disk drives, preferably FlexyDisk drives.

公开(公告)号：HK62289A

公开(公告)日：1989-08-11

申请号：HK62289

申请日：1989-08-03

Applicant: BASF AG

Inventor： KRAUS GEROLD ,  HUBER WALTER ,  HACK JOACHIM ,  SCHULZE-BERGE KLAUS ,  SOLD ROLAND

IPC: G11B5/56 ,  G11B5/58 ,  G11B5/596 ,  G11B20/18 ,  G11B21/10 ,  G11B23/36

Abstract: A method and an arrangement for detecting error signals in a magnetic disk drive apparatus uses a test disk which has a plurality of test tracks distributed over the recording area and containing special test signals, a distinction being made between orientation, adjustment and azimuth bursts. Based on the normal position of the recording tracks of the magnetic disk, the spacing of the test tracks could depend on the type of step motor if such a motor is used in the positioning device. By special control, hysteresis errors can be measured in addition to tracking errors, eccentricity errors and azimuth errors. An advantageous use is for all types of disk drives, preferably FlexyDisk drives.