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公开(公告)号：DE3508715A1
公开(公告)日：1986-09-18
申请号：DE3508715
申请日：1985-03-12
Applicant: BASF AG
Inventor： NAGEL PETER , DINGLER ROBERT , FEYH HANS-OTTO , FALK ROLAND DR , HACK JOACHIM
Abstract: The reflector mark (2), consisting exclusively of a metal layer, at the beginning and end of a magnetic tape (1) is transferred to the said tape with the aid of a carrier strip (6). For this purpose, the metal layer provided with adhesive (4) is pressed on to the magnetic tape by means of the carrier strip, on which the said layer is held by a coupling agent layer (7), at a temperature at which the metal layer detaches itself from the coupling agent and the adhesive is activated.
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22.发明专利
公开(公告)号：ZA853730B
公开(公告)日：1986-01-29
申请号：ZA853730
申请日：1985-05-17
Applicant: BASF AG
Inventor： KRAUS GEROLD , HUBER WALTER , HACK JOACHIM , SCHULZE-BERGE KLAUS , SOLD ROLAND
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.
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23.发明专利
公开(公告)号：ZA8503730B
公开(公告)日：1986-01-29
申请号：ZA8503730
申请日：1985-05-17
Applicant: BASF AG
Inventor： KRAUS GEROLD , HUBER WALTER , HACK JOACHIM , SCHULZE-BERGE KLAUS , SOLD ROLAND
CPC classification number: G11B23/36 , G11B5/59627 , G11B20/182
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公开(公告)号：DE3264672D1
公开(公告)日：1985-08-14
申请号：DE3264672
申请日：1982-09-09
Applicant: BASF AG
Inventor： BACHMANN RUDOLF DR , BALZ WERNER DR , GRAU WERNER DR , GUTERMANN WINFRIED , KOVACS JENOE DR , KRUCKER KARL DR , RUDOLF PETER , SCHAEFER DIETER DR , HACK JOACHIM
IPC: C09D5/23 , C09D137/00 , G11B5/70 , G11B5/702
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公开(公告)号：DE3165026D1
公开(公告)日：1984-08-30
申请号：DE3165026
申请日：1981-05-06
Applicant: BASF AG
Inventor： HACK JOACHIM , BROTZLER ROLAND , SCHULZE-BERGE KLAUS , ANGERMANN RUDOLF
IPC: G11B17/028 , G11B17/02 , G11B17/03 , G11B3/62
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Patent Agency Ranking
公开(公告)号：GB2124714A
公开(公告)日：1984-02-22
申请号：GB8316118
申请日：1983-06-13
Applicant: BASF AG
Inventor： HACK JOACHIM , SCHULZE-BERGE KLAUS , BIKENMEIER KLAUS
Abstract: A positioning device, comprising a cylindrical guide element and a guide surface, is so designed that an angle of less than 90 DEG , especially of from 1 DEG to 80 DEG , is formed between an axis at right angles to the direction of movement of the guide element over the guide surface and the axis of rotation of the guide element, in the plane containing these two axes. The peripheral surface of the guide element can be grooved or convex. The novel positioning device can be used with advantage in any type of recording/playback apparatus for disk records.
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公开(公告)号：FR2435887A7
公开(公告)日：1980-04-04
申请号：FR7919209
申请日：1979-07-25
Applicant: BASF AG
Inventor： HACK JOACHIM
Abstract: A device for compensating for an inequality between the d.c. magnetic fields set up by the two oppositely acting windings, respectively, of the magnetic heads of a data storage device, particularly a disc memory, and a data storage apparatus including such a device, the device comprising means for generating a compensating direct current and feeding this current at the appropriate time to a predetermined one of the two windings of the magnetic heads. The magnitude of the compensating direct current is advantageously adjusted in dependence on the instantaneous magnitude of the write current.
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公开(公告)号：DE3761931D1
公开(公告)日：1990-04-19
申请号：DE3761931
申请日：1987-12-19
Applicant: BASF AG
Inventor： HITZFELD MICHAEL DR , GRAU WERNER DR , HACK JOACHIM
Abstract: 1. A magnetic recording medium consisting of a flexible disk-shaped nonmagnetic base, a cobalt/chromium alloy layer applied thereto snd suitable for vertical recording, and a friction-reducing layer present on this alloy layer, wherein the friction-reducing layer is a 5-100 nm thick amorphous carbon layer produced by sputtering.
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公开(公告)号：AU576859B2
公开(公告)日：1988-09-08
申请号：AU4268485
申请日：1985-05-17
Applicant: BASF AG
Inventor： KRAUS GEROLD , HUBER WALTER , HACK JOACHIM , SCHULZE-BERGE KLAUS , SOLD ROLAND
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.
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公开(公告)号：DE3467058D1
公开(公告)日：1987-12-03
申请号：DE3467058
申请日：1984-07-10
Applicant: BASF AG
Inventor： ROLLER HERMANN , LEHNER AUGUST , HACK JOACHIM , GRAU WERNER DR , BALZ WERNER DR , BAUR REINHOLD DR
Abstract: Magnetic recording media which have a thin backing coating and consist of a non-magnetic flexible base and a magnetic layer which is applied to one side of the base and comprises magnetic material finely dispersed in an organic binder are produced by applying a dispersion of finely divided non-magnetizable conductive and non-conductive solids and conventional additives in a solution of a polymeric binder in an organic solvent to that side of the base which is opposite the magnetic layer by means of a knife-coater, and then drying the layer, a high molecular weight organic compound which acts as a thickener being added to the backing coating dispersion.
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