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公开(公告)号：JP2001351221A
公开(公告)日：2001-12-21
申请号：JP2001108293
申请日：2001-04-06
Applicant: EMTEC MAGNETICS GMBH
Inventor： JAKUSCH HELMUT DR , KOHL ALBERT , HEILMANN PETER DR , VEITCH RONALD JOHN , KRESS RIA , MUELLER STEFAN , SANDROCK JOHANNES , HEENE HARTMUT
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic recording medium which uses pigment in the lower side layer, which is markedly characterized in that it is every finely pulverized, more economical than the conventional pigment in the lower side layer and magnetically soft. SOLUTION: A multilayered magnetic recording medium, suitable for high recording density and digital recording, having superior electromagnetic recording characteristics and improved surface smoothness and capable of sufficiently absorbing a large quantity of lubricant in the lower side layer, is provided with an upper-side magnetic recording layer, having less than 0.5 μm layer thickness and at least one layer of lower side layer which includes the magnetically soft pigment.
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公开(公告)号：JPH10175266A
公开(公告)日：1998-06-30
申请号：JP20641697
申请日：1997-07-31
Applicant: EMTEC MAGNETICS GMBH
Inventor： KOHL ALBERT , SCHNEIDER NORBERT , ROEMER KARL-HEINZ , RICHTER JUERGEN DR , HEILMANN PETER DR , HITZFELD MICHAEL DR
IPC: B32B7/02 , B41M5/382 , B41M5/392 , B41M5/395 , B41M5/44 , C08L23/06 , G11B5/73 , G11B5/733 , G11B5/74 , H01F1/11
Abstract: PROBLEM TO BE SOLVED: To obtain high wear-resistant properties and magnetic properties by providing a layer containing respectively specific rates of a polymer with a specific melt point or a softening temperature and a polymer with a specific minimum melt point or a specific minimum softening temperature, and also providing another layer containing another polymer on a base. SOLUTION: A base II and a layer III containing 75-90wt.% of a polymer IV with a melt point or a softening temperature of 100-160 deg.C and 10-25wt.% of a polymer V with a melt point or a softening temperature of minimum 90 deg.C are provided on a medium I. In addition, another layer VI containing polymer VII is provided. A monomer accounting for the most part of the polymer IV is an olefinic unsaturated hydrocarbon and the polymer V is polyurethane polyacrylate, polymethcrylate, polyacrylamide or vinyl polymer. The content of the polymer VII is upto 100wt.% for the layer VI and the polymer VII is polyacrylate, polymethacrylate, polyacrylamide or vinyl polymer.
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Patent Agency Ranking
公开(公告)号：JP2001357512A
公开(公告)日：2001-12-26
申请号：JP2001108310
申请日：2001-04-06
Applicant: EMTEC MAGNETICS GMBH
Inventor： VEITCH RONALD JOHN , JAKUSCH HELMUT DR , KOHL ALBERT , HEILMANN PETER DR , KRESS RIA , ILMER ANDREAS DR , MUELLER STEFAN , SANDROCK JOHANNES
IPC: B42D15/10 , G11B5/62 , G11B5/70 , G11B5/706 , G11B5/708 , G11B5/712 , G11B5/714 , G11B5/716 , G11B5/842 , G11B5/845 , G11B5/852 , H01F1/34
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic recording medium which has excellent electromagnetic characteristics in the entire range of the recording wavelength and excellent mechanical characteristics, is suitable for recording of digital data and can be manufactured by a well-known technique and in which the problem of head saturation is not caused. SOLUTION: In the multi layered magnetic recording medium suitable for high recording density and digital recording, having excellent electromagnetic recording characteristics in the entire range of a recording wavelength, excellent mechanical characteristics, improved surface smoothness and flat frequency response, an upper side magnetic recording layer having
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公开(公告)号：JPH1145425A
公开(公告)日：1999-02-16
申请号：JP14311798
申请日：1998-05-25
Applicant: EMTEC MAGNETICS GMBH
Inventor： HEILMANN PETER DR , ILMER ANDREAS DR , JAKUSCH HELMUT DR , LENZ WERNER DR , MUNCH MICHEL DR , NICKOLAY GERD , SCHNEIDER NORBERT
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic recording material improved in the surface shape, having a good traveling property, particularly an improved output level, a low modulation noise and a less fluctuation in the output level during traveling of a tape. SOLUTION: This recording material consists of a nonmagnetic substrate and more than one different layer provided on this substrate and at least one layer among these different layers is a magnetic layer suitable for storing information. In this case, when the recording material 3 is mounted on a reference surface 2 while a surface 3' opposite to an information recording head imparts the tension of about 14-200 mN to the recording material 3, the recording material 3 has such a surface shape that 50% of the surface 3' is separated from the reference surface 2 by
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公开(公告)号：DE19722137A1
公开(公告)日：1998-12-03
申请号：DE19722137
申请日：1997-05-27
Applicant: EMTEC MAGNETICS GMBH
Inventor： HEILMANN PETER DR , ILMER ANDREAS DR , JAKUSCH HELMUT DR , LENZ WERNER DR , MUNCH MICHEL DR , NICKOLAY GERD , SCHNEIDER NORBERT
Abstract: The magnetic recording material has a non-magnetic substrate. One or several further layers are applied to the substrate. At least one of these further layers is a magnetic layer suitable for storing information. The surface of the recording material nearest to the magnetic head used for recording information has a surface profile formed such that 50% of the surface has a distance of no more than 80 nm from a reference surface (2). 90% of the surface has a distance of no more than 140 nm from the reference surface (2). The recording material (3) lies on the reference surface (2) with its surface under a tension of around 140 to 200 mN. Preferably the density function of the frequency of discrete distance values exhibits a monomodal distribution.
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公开(公告)号：ES2171160T3
公开(公告)日：2002-09-01
申请号：ES93104833
申请日：1993-03-24
Applicant: EMTEC MAGNETICS GMBH
Inventor： VEITCH RONALD JOHN DR , JAKUSCH HELMUT DR , HEILMANN PETER DR
IPC: G01K11/06
Abstract: A description is given of a monitoring device for frozen foods, with the aid of which overshooting of an additional storage temperature is irreversibly indicated. A flat plastic bag with transparent walls is connected to the frozen goods in a thermally conductive fashion, and a eutectic medium having a liquid/solid phase transition in the range from 0 DEG C to -50 DEG C is introduced into said bag together with a magnetic dispersion consisting of finely disperse magnetic pigments. Bonded on the bag is a magnetic strip which contains a magnetically recorded pattern and which remains connected to the bag until the monitoring device with the frozen goods is cooled below the limiting temperature. The magnetic strip is then removed. Upon overshooting of the permissible limiting temperature, the optically or magnetically readable structure generated by the magnetic strip is cancelled in the monitoring bag, so that it is easy to monitor the frozen food. The invention permits numerous varying possibilities by the combination of a plurality of mounted magnetic strips.
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公开(公告)号：DE19631007A1
公开(公告)日：1998-02-05
申请号：DE19631007
申请日：1996-08-01
Applicant: EMTEC MAGNETICS GMBH
Inventor： KOHL ALBERT , SCHNEIDER NORBERT , ROEMER KARL-HEINZ , RICHTER JUERGEN DR , HEILMANN PETER DR , HITZFELD MICHAEL DR
IPC: B32B7/02 , B41M5/382 , B41M5/392 , B41M5/395 , B41M5/44 , C08L23/06 , G11B5/73 , G11B5/733 , G11B5/74 , H01F1/11 , B41M5/40
Abstract: Media (I) suitable for thermal transfer, containing (a) a base layer (II), (b) a layer (III) containing (1) 75-90 wt% polymer (IV) with a m.pt. or softening pt. (s.pt.) of 100-160 degrees C and (2) 10-25 wt% polymer (V) with a melting point or softening point of at least 90 degrees C, and (c) a layer (VI) containing a polymer (VII). Also claimed are (i) media (XI) made up of layers, obtained by reacting a medium (I) with a substrate (XII) by bringing the two into contact so that layers (III) and (VI) are between layer (II) and substrate (XII); (ii) a process for the production of media (XI) by contacting (I) with (XII) as above at 80-180 degrees C.
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