BR7908415A - Conjunto de cabecote magnetico de pelicula fina - Google Patents
Conjunto de cabecote magnetico de pelicula finaInfo
- Publication number
- BR7908415A BR7908415A BR7908415A BR7908415A BR7908415A BR 7908415 A BR7908415 A BR 7908415A BR 7908415 A BR7908415 A BR 7908415A BR 7908415 A BR7908415 A BR 7908415A BR 7908415 A BR7908415 A BR 7908415A
- Authority
- BR
- Brazil
- Prior art keywords
- thin film
- film magnetic
- headset set
- magnetic headset
- thin
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3109—Details
- G11B5/313—Disposition of layers
- G11B5/3133—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure
- G11B5/3136—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure for reducing the pole-tip-protrusion at the head transducing surface, e.g. caused by thermal expansion of dissimilar materials
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3109—Details
- G11B5/313—Disposition of layers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/972,103 US4219854A (en) | 1978-12-21 | 1978-12-21 | Thin film magnetic head assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
BR7908415A true BR7908415A (pt) | 1980-09-23 |
Family
ID=25519164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR7908415A BR7908415A (pt) | 1978-12-21 | 1979-12-20 | Conjunto de cabecote magnetico de pelicula fina |
Country Status (9)
Country | Link |
---|---|
US (1) | US4219854A (pt) |
EP (1) | EP0012910B1 (pt) |
JP (1) | JPS5584020A (pt) |
AU (1) | AU524436B2 (pt) |
BR (1) | BR7908415A (pt) |
CA (1) | CA1126402A (pt) |
DE (1) | DE2961279D1 (pt) |
ES (1) | ES486015A1 (pt) |
ZA (1) | ZA796369B (pt) |
Families Citing this family (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5611613A (en) * | 1979-07-04 | 1981-02-05 | Matsushita Electric Ind Co Ltd | Thin film magnetic head |
US4353102A (en) * | 1979-07-04 | 1982-10-05 | Matsushita Electric Industrial Co., Ltd. | Thin-film magnetic head |
JPS5674811A (en) * | 1979-11-20 | 1981-06-20 | Matsushita Electric Ind Co Ltd | Magnetic head |
US4375657A (en) * | 1980-11-03 | 1983-03-01 | Brock George W | Magnetic head assembly |
US4420505A (en) * | 1981-02-04 | 1983-12-13 | Eastman Kodak Company | Method of making a thin film magnetic head having good low frequency response |
US4399479A (en) * | 1981-02-04 | 1983-08-16 | Eastman Kodak Company | Thin film magnetic head having good low frequency response |
JPS5819717A (ja) * | 1981-07-30 | 1983-02-04 | Fujitsu Ltd | 垂直磁化記録再生用ヘッド |
US4404609A (en) * | 1981-10-30 | 1983-09-13 | International Business Machines Corporation | Thin film inductive transducer for perpendicular recording |
US4458280A (en) * | 1982-01-18 | 1984-07-03 | International Business Machines Corporation | Servo writing transducer design and writing method |
US4494125A (en) * | 1982-05-26 | 1985-01-15 | Ferix Corporation | Differential-permeability field-concentrating magnetic read/write head |
JPS5971115A (ja) * | 1982-10-15 | 1984-04-21 | Hitachi Ltd | 磁気ヘッド |
US4593334A (en) * | 1983-05-02 | 1986-06-03 | International Business Machines Corporation | Thin film transducer |
JPS59231722A (ja) * | 1983-06-13 | 1984-12-26 | Matsushita Electric Ind Co Ltd | 薄膜磁気ヘッドの製造方法 |
DE3346885A1 (de) * | 1983-12-23 | 1985-07-11 | Siemens AG, 1000 Berlin und 8000 München | Duennschicht-magnetkopf fuer ein senkrecht zu magnetisierendes aufzeichnungsmedium |
DE3346777A1 (de) * | 1983-12-23 | 1985-07-04 | Siemens AG, 1000 Berlin und 8000 München | Duennschicht-magnetkopf zur senkrechten (vertikalen) aufzeichnung |
DE3566848D1 (en) * | 1984-05-04 | 1989-01-19 | Siemens Ag | Thin-layer double-gap magnetic head for a perpendicularly magnetized recording medium |
DE3418822A1 (de) * | 1984-05-21 | 1985-11-21 | Siemens AG, 1000 Berlin und 8000 München | Schreib-/lese-magnetkopf mit einem schichtweisen aufbau fuer ein senkrecht zu magnetisierendes aufzeichnungsmedium |
DE3419650A1 (de) * | 1984-05-25 | 1985-11-28 | Siemens AG, 1000 Berlin und 8000 München | Duennschicht-magnetkopf zum schreiben und lesen fuer ein senkrecht zu magnetisierendes aufzeichnungs-medium |
DE3420746A1 (de) * | 1984-06-04 | 1985-12-05 | Siemens AG, 1000 Berlin und 8000 München | Schichtweise aufgebauter magnetkopf fuer ein senkrecht zu magnetisierendes aufzeichnungsmedium |
US4644432A (en) * | 1985-01-28 | 1987-02-17 | International Business Machines | Three pole single element magnetic read/write head |
US4764834A (en) * | 1985-03-22 | 1988-08-16 | Applied Magnetics Corporation | Thin film magnetic transducer having a separate magnetically conductive layer |
DE3513431A1 (de) * | 1985-04-15 | 1986-10-23 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur herstellung mindestens eines magnetkopfes in duennfilmtechnik |
US4740855A (en) * | 1985-10-18 | 1988-04-26 | Siemens Aktiengesellschaft | Magnetic thin-film head having a main and an auxiliary pole for vertical magnetization |
JP2514624B2 (ja) * | 1985-11-29 | 1996-07-10 | 日本電信電話株式会社 | 薄膜磁気ヘッド |
DE3544823A1 (de) * | 1985-12-18 | 1987-06-19 | Siemens Ag | Duennfilm-magnetkopf fuer ein longitudinal oder senkrecht zu magnetisierendes aufzeichnungsmedium |
DE3544851A1 (de) * | 1985-12-18 | 1987-06-19 | Siemens Ag | Duennfilm-magnetkopf zur longitudinalen oder senkrechten magnetisierung eines entsprechenden aufzeichnungsmediums |
DE3544883A1 (de) * | 1985-12-18 | 1987-06-19 | Siemens Ag | Duennfilm-magnetkopf zur senkrechten magnetisierung eines entsprechenden aufzeichnungsmediums |
EP0232505A1 (de) * | 1985-12-20 | 1987-08-19 | Siemens Aktiengesellschaft | Magnetische Speichereinrichtung mit einem senkrecht zu magnetisierenden Aufzeichnungsmedium |
JPS62173607A (ja) * | 1986-01-27 | 1987-07-30 | Hitachi Ltd | 薄膜磁気ヘツド |
JPS6320079A (ja) * | 1986-07-11 | 1988-01-27 | ヤンマー農機株式会社 | 穀粒などの粒状体の感知センサ−装置 |
US4875124A (en) * | 1988-01-11 | 1989-10-17 | International Business Machines Corporation | Thin film magnetic heads with thermally crosslinked insulation |
DE3831803C2 (de) * | 1988-09-19 | 1995-02-09 | Siemens Ag | Dünnfilm-Magnetkopf mit einer flachen Schreib-/Lesespulenwicklung |
US5032944A (en) * | 1989-01-12 | 1991-07-16 | Mitsubishi Denki Kabushiki Kaisha | Membrane type magnetic head |
US5236735A (en) * | 1989-05-27 | 1993-08-17 | Tdk Corporation | Method of producing a thin film magnetic head |
NL9001147A (nl) * | 1990-05-17 | 1991-12-16 | Philips Nv | Dunnefilm magneetkop. |
US5220471A (en) * | 1990-08-14 | 1993-06-15 | Tdk Corporation | Air bearing slider having a longitudinal groove in surface remote from recording medium |
US5059278A (en) * | 1990-09-28 | 1991-10-22 | Seagate Technology | Selective chemical removal of coil seed-layer in thin film head magnetic transducer |
US5472736A (en) * | 1991-06-03 | 1995-12-05 | Read-Rite Corporation | Method of making a bi-level coil for a thin film magnetic transducer |
US5173826A (en) * | 1991-06-03 | 1992-12-22 | Read-Rite Corp. | Thin film head with coils of varying thickness |
US5748414A (en) * | 1994-06-24 | 1998-05-05 | Samsung Electro-Mechanics Co., Ltd. | Magnetoresistive element assembly with longitudinal bias |
US5703740A (en) * | 1995-08-24 | 1997-12-30 | Velocidata, Inc. | Toroidal thin film head |
US6195232B1 (en) | 1995-08-24 | 2001-02-27 | Torohead, Inc. | Low-noise toroidal thin film head with solenoidal coil |
JP2000350212A (ja) * | 1999-06-04 | 2000-12-15 | Matsushita Electric Ind Co Ltd | 映像信号復号装置並びに映像信号表示システム |
US7370403B1 (en) * | 2000-06-06 | 2008-05-13 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method of fabricating a planar spiral inductor structure having an enhanced Q value |
GB2379793B (en) * | 2000-06-20 | 2004-03-17 | Seagate Technology Llc | Disc drive with layered write coil |
US6859343B1 (en) | 2002-03-19 | 2005-02-22 | Western Digital, Inc. | Hybrid diffuser for minimizing thermal pole tip protrusion and reader sensor temperature |
US7035046B1 (en) | 2002-03-19 | 2006-04-25 | Western Digital (Fremont), Inc. | System and method for minimizing thermal pole tip protrusion |
US6980395B2 (en) * | 2002-10-31 | 2005-12-27 | International Business Machines Corporation | Enhanced coplanar conductance structure for inductive heads |
US6950279B2 (en) * | 2003-01-30 | 2005-09-27 | Headway Technologies, Inc. | Thin-film magnetic head with thin-film coil of low resistance |
US7027242B1 (en) | 2004-09-23 | 2006-04-11 | Western Digital (Fremont), Inc. | Method and apparatus for measuring write-induced pole tip protrusion |
JP2008165923A (ja) | 2006-12-28 | 2008-07-17 | Tdk Corp | 薄膜磁気ヘッド |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3564522A (en) * | 1966-12-16 | 1971-02-16 | Data Disc Inc | Transducer with thin film coil and semiconductor switching |
US3685144A (en) * | 1967-09-18 | 1972-08-22 | Ncr Co | Method of making a magnetic transducer |
DE2131096C3 (de) * | 1971-06-23 | 1979-05-10 | Transformatoren Union Ag, 7000 Stuttgart | Band- oder folienartiger Stromleiter für Wicklungen von Transformatoren, Drosselspulen, Wandlern u.dgl |
US3766640A (en) * | 1971-12-20 | 1973-10-23 | Ibm | Method of manufacturing magnetic transducers |
FR2209154B1 (pt) * | 1972-07-03 | 1975-04-11 | Cii | |
JPS4950914A (pt) * | 1972-09-14 | 1974-05-17 | ||
US3829896A (en) * | 1972-11-08 | 1974-08-13 | Ibm | Bias means for batch fabricated magnetic head and method of manufacture thereof |
US4016519A (en) * | 1976-05-14 | 1977-04-05 | Blaupunkt-Werke Gmbh | Printed circuit coils |
US4130847A (en) * | 1977-03-31 | 1978-12-19 | International Business Machines Corporation | Corrosion resistant thin film head assembly and method for making |
DE2721452A1 (de) * | 1977-05-12 | 1978-11-16 | Siemens Ag | Integrierte magnetkopfstruktur und verfahren zu ihrer herstellung |
-
1978
- 1978-12-21 US US05/972,103 patent/US4219854A/en not_active Expired - Lifetime
-
1979
- 1979-11-13 CA CA339,625A patent/CA1126402A/en not_active Expired
- 1979-11-16 ES ES486015A patent/ES486015A1/es not_active Expired
- 1979-11-19 AU AU52950/79A patent/AU524436B2/en not_active Ceased
- 1979-11-23 ZA ZA00796369A patent/ZA796369B/xx unknown
- 1979-11-30 JP JP15453079A patent/JPS5584020A/ja active Granted
- 1979-12-10 DE DE7979105055T patent/DE2961279D1/de not_active Expired
- 1979-12-10 EP EP79105055A patent/EP0012910B1/en not_active Expired
- 1979-12-20 BR BR7908415A patent/BR7908415A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0012910B1 (en) | 1981-11-04 |
CA1126402A (en) | 1982-06-22 |
ZA796369B (en) | 1980-11-26 |
EP0012910A1 (en) | 1980-07-09 |
ES486015A1 (es) | 1980-06-16 |
AU5295079A (en) | 1980-06-26 |
DE2961279D1 (en) | 1982-01-14 |
AU524436B2 (en) | 1982-09-16 |
US4219854A (en) | 1980-08-26 |
JPS5584020A (en) | 1980-06-24 |
JPS638528B2 (pt) | 1988-02-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK | Patent expired |
Effective date: 19941220 |