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公开(公告)号：IT1200147B
公开(公告)日：1989-01-05
申请号：IT4882685
申请日：1985-11-26
Applicant: SONY CORP
Inventor： MANIWA OSAMU , KOBAYASHI TOMIO , KANO SHOICHI , KONNO SEIKI , SATO HEIKICHI
Abstract: A magnetic transducer head wherein confronting surfaces of a pair of magnetic core parts comprised of a ferromagnetic oxide material are notched, and the notch defining surfaces have metallic ferromagnetic layers supported thereby. The method of physical vapor deposition as known per se is used for forming these layers. The transducer coupling gap of each magnetic head is defined by an aligned pair of pole piece layers formed from the deposited metallic ferromagnetic material. The pole piece layers are inclined at a preset angle with respect to the plane of the coupling gap, and have extensions formed of the deposited metallic ferromagnetic material presenting bend contours between the pole piece layers and the lateral sides of the core parts.
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公开(公告)号：GB2167597B
公开(公告)日：1988-09-14
申请号：GB8529056
申请日：1985-11-26
Applicant: SONY CORP
Inventor： KOBAYASHI TOMIO , KANO SHOICHI , MANIWA OSAMU , KONNO SEIKI , SATO HEIKICHI
Abstract: A magnetic transducer head wherein confronting surfaces of a pair of magnetic core parts comprised of a ferromagnetic oxide material are notched, and the notch defining surfaces have metallic ferromagnetic layers supported thereby. The method of physical vapor deposition as known per se is used for forming these layers. The transducer coupling gap of each magnetic head is defined by an aligned pair of pole piece layers formed from the deposited metallic ferromagnetic material. The pole piece layers are inclined at a preset angle with respect to the plane of the coupling gap, and have extensions formed of the deposited metallic ferromagnetic material presenting bend contours between the pole piece layers and the lateral sides of the core parts.
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公开(公告)号：GB2158282B
公开(公告)日：1988-06-22
申请号：GB8507362
申请日：1985-03-21
Applicant: SONY CORP
Inventor： KUBOTA MAKOTO , KUMURA TATSUO , SAITO JUNICHI , KOBAYASHI TOMIO , SATO HEIKICHI
Abstract: A magnetic transducer head in which the magnetic core elements of ferromagnetic oxides are sliced obliquely across the junction surface of the core elements, ferromagnetic metal thin films are formed on the resulting inclined surfaces by employing a physical vapor deposition, and the core elements are placed with the respective ferromagnetic metal thin films abutting to each other for defining a magnetic gap therebetween, wherein the improvement consists in that said inclined surfaces with the ferromagnetic metal thin films formed thereon are inclined at a preset angle with the magnetic gap forming surface, in that non-magnetic films having high-hardness are interposed between the ferromagnetic oxide and the ferromagnetic metal thin films, and in that said ferromagnetic metal thin films and the oxide glass fillers are provided on the tape abutment surface by the intermediary of the non-magnetic film having high-hardness. The provision of the non-magnetic film having high-hardness between the ferromagnetic oxide and the ferromagnetic metal thin film is effective to inhibit the reaction otherwise occurring between the oxide and the films, while positively preventing the formation of the boundary layer with inferior magnetic properties. Likewise, the provision of the non-magnetic film having high-hardness between the ferromagnetic metal thin film and the oxide glass is effective to prevent the erosion of the film by the molten glass, while also improving the molten glass fluidity. It should be noted that the non-magnetic films having high-hardness may be provided on the interface only between the core elements and the metal thin films or on the interface only between the metal thin films and the oxide glass.
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公开(公告)号：AU5003785A
公开(公告)日：1986-06-05
申请号：AU5003785
申请日：1985-11-19
Applicant: SONY CORP
Inventor： KOBAYASHI TOMIO , KANO SHOICHI , MANIWA OSAMU , KONNO SEIKI
Abstract: A magnetic transducer head wherein confronting surfaces of a pair of magnetic core parts comprised of a ferromagnetic oxide material are notched, and the notch defining surfaces have metallic ferromagnetic layers supported thereby. The method of physical vapor deposition as known per se is used for forming these layers. The transducer coupling gap of each magnetic head is defined by an aligned pair of pole piece layers formed from the deposited metallic ferromagnetic material. The pole piece layers are inclined at a preset angle with respect to the plane of the coupling gap, and have extensions formed of the deposited metallic ferromagnetic material presenting bend contours between the pole piece layers and the lateral sides of the core parts.
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公开(公告)号：AU4005685A
公开(公告)日：1985-10-03
申请号：AU4005685
申请日：1985-03-18
Applicant: SONY CORP
Inventor： SAITO JUNICHI , KUBOTA MAKOTO , KOBAYASHI TOMIO , KUMURA TATSUO , SATO HEIKICHI
IPC: G11B5/31
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Patent Agency Ranking
公开(公告)号：FR2558000A1
公开(公告)日：1985-07-12
申请号：FR8420082
申请日：1984-12-28
Applicant: SONY CORP
Inventor： KOBAYASHI TOMIO , SATO HEIKICHI , KUBOTA MAKOTO , KANO SHOICHI , KUMURA TATSUO
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公开(公告)号：CA1147055A
公开(公告)日：1983-05-24
申请号：CA341907
申请日：1979-12-13
Applicant: SONY CORP
Inventor： KOBAYASHI TOMIO , FUKUSHI KOUJI
Abstract: A multi-channel magnetic transducer head of high density integration and method of manufacturing the same is disclosed . The head is formed by combining two core blocks to form a magnetic gap therebetween. On the confronting surface of one of two core blocks, there is provided a plurality of parallel grooves. On the confronting surface of another core, there is provided a gap defining groove extending perpendicular to the parallel grooves. A plurality of first conductor strips are formed on the confronting surface of the one core and in the parallel grooves in the direction substantially perpendicular to the parallel grooves. The another surface of the one core opposite to the confronting surface is ground until the conductor strips are disposed on the surface and the cores are separated into a plurality of core elements. Second conductor strips are formed on the opposite surface to form coils around the core elements in co-operation with the first conductor strips.
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公开(公告)号：DE69725369D1
公开(公告)日：2003-11-13
申请号：DE69725369
申请日：1997-03-18
Applicant: SONY CORP
Inventor： KONDO HIROFUMI , HANAOKA HIDEAKI , KOBAYASHI TOMIO
IPC: C03C17/30 , C07F7/18 , C08G65/00 , C08G65/336 , C08J7/04 , C09D4/00 , C09D5/14 , C09D5/16 , C09D183/04 , C09D183/12 , G02B1/10 , G02B1/115 , G02B1/14 , G02B1/18
Abstract: To provide a composition for forming an antifouling film with which an antifouling film excellent in stain resistance, scratch resistance, solvent resistance, etc. can be formed and an optical component having such an antifouling film, for example, an anti-reflection filter. An antifouling film is formed by a composition for forming the antifouling film containing an alkoxysilane compound having a perfluoropolyether group indicated by the following general formula (1): Rf(COR1-R2-Si(OR3)3üj where, in the formula, Rf indicates a perfluoropolyether group, R1 indicates a bivalent atom or group, R2 indicates an alkylene group, R3 indicates an alkyl group, and j is 1 or 2.
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公开(公告)号：DE3541762C2
公开(公告)日：1994-09-01
申请号：DE3541762
申请日：1985-11-26
Applicant: SONY CORP
Inventor： KOBAYASHI TOMIO , KANO SHOICHI , MANIWA OSAMU , KONNO SEIKI , SATO HEIKICHI
Abstract: A magnetic transducer head wherein confronting surfaces of a pair of magnetic core parts comprised of a ferromagnetic oxide material are notched, and the notch defining surfaces have metallic ferromagnetic layers supported thereby. The method of physical vapor deposition as known per se is used for forming these layers. The transducer coupling gap of each magnetic head is defined by an aligned pair of pole piece layers formed from the deposited metallic ferromagnetic material. The pole piece layers are inclined at a preset angle with respect to the plane of the coupling gap, and have extensions formed of the deposited metallic ferromagnetic material presenting bend contours between the pole piece layers and the lateral sides of the core parts.
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公开(公告)号：GB2153581B
公开(公告)日：1988-05-25
申请号：GB8432443
申请日：1984-12-21
Applicant: SONY CORP
Inventor： KOBAYASHI TOMIO , SATO HEIKICHI , KUBOTA MAKOTO , KANO SHOICHI , KUMURA TATSUO , YAMAUCHI KAZUSHI , TAKAHASHI YOSHIMI , SAITO JUNICHI , KONNO SEIKI , MANIWA OSAMU
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