公开(公告)号：EP0004652A3

公开(公告)日：1979-10-31

申请号：EP79100984

申请日：1979-03-31

Applicant: BAYER AG

Inventor： Buxbaum, Gunter, Dr. ,  Pflugmacher, Ingo, Dr. ,  Hund, Franz, Dr. ,  Hahnkamm, Volker, Dr. ,  Woditsch, Peter, Dr.

IPC: H01F01/11 ,  C09C01/24 ,  C01G49/06 ,  G11B05/70

CPC classification number: G11B5/70657 ,  G11B5/70663 ,  G11B5/70668 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/257 ,  Y10T428/261 ,  Y10T428/2991

公开(公告)号：EP0003100A3

公开(公告)日：1979-08-22

申请号：EP79100006

申请日：1979-01-02

Applicant: BAYER AG

Inventor： Buxbaum, Gunter, Dr. ,  Hahnkamm, Volker, Dr. ,  Printzen, Helmut, Dr.

IPC: H01F01/11 ,  C01G49/02 ,  G11B05/70

CPC classification number: G11B5/70689

公开(公告)号：EP0176983A3

公开(公告)日：1987-10-07

申请号：EP85112293

申请日：1985-09-27

Applicant: UNION CARBIDE CORPORATION

Inventor： Stratta, Julius John ,  Stasiak, Nicholas

IPC: B01F17/54 ,  B01F17/14 ,  G11B05/70

CPC classification number: G11B5/7013 ,  B01F17/0085 ,  C08G65/327 ,  C08G65/336 ,  C08L71/02 ,  Y10S428/90 ,  Y10T428/2991 ,  Y10T428/31663 ,  C08L2666/22

Abstract: Ferromagnetic particles are dispersed for use in magnetic coatings by a novel dispersing agent containing either silylated alkylene oxide copolyethers or isocyanatoalkyl silanes in combination with phosphate esters.

公开(公告)号：EP0136631A3

公开(公告)日：1986-09-17

申请号：EP84111286

申请日：1984-09-21

Applicant: International Business Machines Corporation

Inventor： Eldridge, Jerome Michael ,  Homola, Andrew Marion

IPC: G11B05/84 ,  G11B05/702 ,  G11B05/70

CPC classification number: G11B5/702 ,  G11B5/84

Abstract: A hermetically encapsulated magnetic record member is produced by applying a liquid mixture containing one or more organometallic compounds, an organic solvent and magnetic particles to a thermally stable substrate, e.g. of silicon. The applied mixture is then heated to melt the glass in the organometallic compound so that upon cooling of the glass, the magnetic particles are encapsulated therein.

公开(公告)号：EP0104378A3

公开(公告)日：1986-03-12

申请号：EP83107788

申请日：1983-08-08

Applicant: BASF Aktiengesellschaft

Inventor： Kohl, Albert ,  Schneider, Norbert ,  Ley, Gregor, Dr. ,  Balz, Werner, Dr. ,  Melzer, Milena ,  Jakusch, Helmut, Dr.

IPC: G11B05/70 ,  G11B05/84

CPC classification number: G11B5/7013

公开(公告)号：EP0095191A3

公开(公告)日：1986-02-12

申请号：EP83105181

申请日：1983-05-25

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Hideyama, Shozo ,  Ishizawa, Akio ,  Kumagai, Katuya ,  Hashimoto, Minoru

IPC: G11B05/70 ,  H01F01/11

CPC classification number: G11B5/716 ,  G11B5/70626 ,  G11B5/70642 ,  Y10S428/90 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/30 ,  Y10T428/31507

Abstract: Disclosed is a magnetic recording medium which comprises; a substrate; a first magnetic layer applied on the surface of the substrate and having an easy axis of magnetization in the in-plane direction of the substrate; and a second magnetic layer applied on the surface of the first magnetic layer, formed of ferrite series powder represented by the formula:
(wherein A is at least one metallic element selected from the group consisting of Ba, Sr, Pb and Ca; M is at least one substituent component selected from the group consisting of CO, Ti, Ni, Mn, Cu, Zn, In, Ge and Nb; m is 0.08 to 0.2; and n is 5.4 to 6.01, and having an easy axis of magnetization in a direction perpendicular to the plane of the substrate; said first magnetic layer having a surface resistivity of 1 × 10 2 to 1 x 10 8 Ω. In another embodiment, a conductive layer having a surface resistivity of 1 x 10 7 Ω or smaller may be interposed between the substrate and the first magnetic layer.

Abstract translation: 公开了一种磁记录介质，其包括： 衬底; 第一磁性层，所述第一磁性层施加在所述衬底的所述表面上并且具有在所述衬底的面内方向上的易磁化轴; 以及施加在第一磁性层表面上的第二磁性层，由下式表示的铁氧体系列粉末形成：（其中A是选自Ba，Sr，Pb和Ca中的至少一种金属元素; M是 选自由CO，Ti，Ni，Mn，Cu，Zn，In，Ge和Nb组成的组中的至少一种取代基组分; m为0.08至0.2;以及n为5.4至6.01，并且其易磁化轴在 垂直于衬底平面的方向;所述第一磁性层具有1×10 2至1×10 8Ω的表面电阻率;在另一个实施例中，表面电阻率为1×10 7Ω或更小的导电层可以插入 衬底和第一磁性层。

公开(公告)号：EP0105094A3

公开(公告)日：1985-12-11

申请号：EP83106491

申请日：1983-07-04

Applicant: International Business Machines Corporation

Inventor： Frater, Norman Kermit ,  Hoo, Stanley Shu-Ku ,  Harlow, McConnell William

IPC: G11B05/60 ,  G11B05/46 ,  G11B05/70 ,  G11B21/20

CPC classification number: G11B5/6005 ,  G11B5/60 ,  G11B5/708 ,  G11B21/20 ,  G11B33/10

Abstract: @ Intermittent contacts between a flying transducer head and a magnetic record medium are monitored by detecting (Fig. 1A) triboelectric charges generated by such contacts. Different amounts and polarities of triboelectric charge are generated by different materials on the surface of the record medium. The flight of the head when it is out of contact with the record medium can be monitored by detecting (Fig. 2A) variations in the displacement current generated as the head flies over the record medium.

公开(公告)号：EP0124291A3

公开(公告)日：1985-11-06

申请号：EP84302231

申请日：1984-03-30

Applicant: TEIJIN LIMITED

Inventor： Kiriyama, Tsutomu ,  Horie, Shigeru ,  Ichihashi, Tetsuo ,  Oshida, Masahiro

IPC: B29D07/24 ,  C08J05/18 ,  G11B05/70

CPC classification number: C08J5/18 ,  C08J2367/02 ,  G11B5/7305 ,  Y10S428/90 ,  Y10T428/31786

Abstract: A biaxially oriented film of a film-forming aromatic polyester derived from an aromatic dicarboxylic acid as a main acid component and an aliphatic glycol as a main glycol component, said film having surface properties such that
(1) it has a surface flatness, R CLA , of from 0.001 to 0.016 micrometer, (2) it has a coefficient of travelling friction, µk, of from 0.01 to 0.20, and (3) the following relation is established between R CLA and µk, Preferably, said film has many minute protrusions on its surface which are attributed to fine particles of titanium dioxide or of both titanium dioxide and calcium carbonate, and has such further surface property that
a distribution curve showing the relation between the heights x in micrometers of said many protrusions on the film surface and the number y of the protrusions having the height x per mm 2 does not cross a straight line represented by equation (1) within the range of log10y> 1.

公开(公告)号：EP0139203A3

公开(公告)日：1985-10-30

申请号：EP84110717

申请日：1984-09-07

Applicant: Toyo Boseki Kabushiki Kaisha ,  Kabushiki Kaisha Nippon Magphane

Inventor： Katsuaki, Kuze ,  Yujiro, Matsuyama ,  Kozo, Maeda ,  Takeshi, Ota ,  Masahiro, Kobayashi ,  Tsuyoshi, Hongo ,  Osamu, Makimura

IPC: C08J05/18 ,  G11B05/70

CPC classification number: C08K3/22 ,  C08K3/26 ,  Y10T428/268 ,  Y10T428/31786 ,  C08L67/02

Abstract: O An oriented polyester comprising ethylene terephthalate as the major repeating unit, which comprises particles of kaolinite and calcium carbonate uniformly dispersed therein, said kaolinite and said calcium carbonate having each an average particle size of 0.05 to 0.8 micron and being contained in such amounts as satisfying the following equations: wherein D is an average particle size (micron) of calcium carbonate, A is a content (ppm) of calcium carbonate and B is a content (ppm) of kaolinite, said oriented polyester film being excellent in flatness, slipperiness, abrasion resistance, etc. with a small number of coarse particles.

公开(公告)号：EP0099533A3

公开(公告)日：1985-10-16

申请号：EP83106771

申请日：1983-07-11

Applicant: BASF Aktiengesellschaft

Inventor： Lehner, August ,  Balz, Werner, Dr. ,  Lenz, Werner, Dr. ,  Kopke, Helmut ,  Bachmann, Rudolf, Dr. ,  Velic, Milan, Dr. ,  Melzer, Milena ,  Hartmann, Heinrich, Dr. ,  Baur, Reinhold, Dr.

IPC: G11B05/70

CPC classification number: G11B5/7021 ,  C08G18/10 ,  Y10S428/90 ,  Y10T428/31609 ,  C08G18/3275