DE69418551T2 - Magnetkopfzusammenbau mit Schreibpol-/Abschirmstruktur - Google Patents
Magnetkopfzusammenbau mit Schreibpol-/AbschirmstrukturInfo
- Publication number
- DE69418551T2 DE69418551T2 DE69418551T DE69418551T DE69418551T2 DE 69418551 T2 DE69418551 T2 DE 69418551T2 DE 69418551 T DE69418551 T DE 69418551T DE 69418551 T DE69418551 T DE 69418551T DE 69418551 T2 DE69418551 T2 DE 69418551T2
- Authority
- DE
- Germany
- Prior art keywords
- magnetic head
- head assembly
- shield structure
- write pole
- write
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/3967—Composite structural arrangements of transducers, e.g. inductive write and magnetoresistive read
-
- 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
- G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
-
- 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
- G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
- Y10T29/49043—Depositing magnetic layer or coating
- Y10T29/49044—Plural magnetic deposition layers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
- Y10T29/49043—Depositing magnetic layer or coating
- Y10T29/49046—Depositing magnetic layer or coating with etching or machining of magnetic material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
- Y10T29/49052—Machining magnetic material [e.g., grinding, etching, polishing] by etching
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11235693A | 1993-08-27 | 1993-08-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69418551D1 DE69418551D1 (de) | 1999-06-24 |
DE69418551T2 true DE69418551T2 (de) | 1999-09-16 |
Family
ID=22343466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69418551T Expired - Fee Related DE69418551T2 (de) | 1993-08-27 | 1994-08-24 | Magnetkopfzusammenbau mit Schreibpol-/Abschirmstruktur |
Country Status (4)
Country | Link |
---|---|
US (1) | US5809637A (de) |
EP (1) | EP0640955B1 (de) |
JP (1) | JPH07296331A (de) |
DE (1) | DE69418551T2 (de) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100386707B1 (ko) * | 1995-06-05 | 2003-09-26 | 퀀텀 페리페랄즈 콜로라도, 인크. | 자기저항판독헤드상의공유차폐부와관련하여자속이강화된기록변환기및그제조방법 |
JP2701796B2 (ja) * | 1995-06-30 | 1998-01-21 | 日本電気株式会社 | 薄膜磁気ヘッド及びその製造方法 |
JP3349925B2 (ja) * | 1996-09-10 | 2002-11-25 | アルプス電気株式会社 | 薄膜磁気ヘッドの製造方法 |
JPH117608A (ja) * | 1997-04-25 | 1999-01-12 | Fujitsu Ltd | 磁気ヘッド及びその製造方法 |
US5916423A (en) * | 1997-05-06 | 1999-06-29 | International Business Machines Corporation | P1 notched write head with minimum overmilled p1 and p2 |
US6178065B1 (en) | 1997-05-29 | 2001-01-23 | Tdk Corporation | Thin film magnetic head and manufacturing method of the head |
US6201670B1 (en) * | 1997-06-16 | 2001-03-13 | International Business Machines Corporation | Merged magnetic head that includes a write head with single-sided notched first pole piece |
US6119331A (en) * | 1997-07-08 | 2000-09-19 | International Business Machines Corporation | Notching the first pole piece of a write head with a notching layer in a combined magnetic head |
JP3484332B2 (ja) | 1997-11-11 | 2004-01-06 | Tdk株式会社 | 薄膜磁気ヘッドの製造方法 |
JP3790347B2 (ja) | 1997-11-26 | 2006-06-28 | Tdk株式会社 | 薄膜磁気ヘッドの製造方法 |
KR100510451B1 (ko) * | 1998-01-15 | 2005-10-26 | 삼성전자주식회사 | 자기 저항 헤드 |
US6427319B1 (en) * | 1998-08-12 | 2002-08-06 | International Business Machines Corporation | Method for protecting magnetic read/write transducers against electrostatic discharge during disk drive manufacturing |
US6230390B1 (en) * | 1998-10-30 | 2001-05-15 | Headway Technologies, Inc. | Canted longitudinal patterned exchange biased dual-stripe magnetoresistive (DSMR) sensor element and method for fabrication thereof |
US6317290B1 (en) | 1999-08-31 | 2001-11-13 | Read-Rite Corporation | Advance pole trim writer with moment P1 and low apex angle |
US6519119B1 (en) | 1999-11-03 | 2003-02-11 | Seagate Technology, Llc | Structure for current perrpendicular to plane giant magnetoresistive read heads |
US6460243B1 (en) * | 1999-11-22 | 2002-10-08 | International Business Machines Corporation | Method of making low stress and low resistance rhodium (RH) leads |
US6385008B1 (en) | 1999-12-16 | 2002-05-07 | International Business Machines Corporation | Reduction of magnetic side writing in thin film magnetic heads using negative profiled pole tips |
US6621664B1 (en) | 2000-02-28 | 2003-09-16 | Seagate Technology Llc | Perpendicular recording head having integrated read and write portions |
JP2001343207A (ja) * | 2000-03-28 | 2001-12-14 | Tokai Rika Co Ltd | 回転検出センサ |
US6552874B1 (en) | 2000-05-17 | 2003-04-22 | Read-Rite Corporation | Shared pole magnetic read-write head for achieving optimized erase band width and method of fabricating the same |
US6430806B1 (en) | 2000-06-23 | 2002-08-13 | Read-Rite Corporation | Method for manufacturing an inductive write element employing bi-layer photoresist to define a thin high moment pole pedestal |
US6798624B2 (en) | 2001-03-15 | 2004-09-28 | Seagate Technology Llc | Magnetization sensor for sensing the write field characteristics of a perpendicular or longitudinal recording head |
US7100266B2 (en) * | 2001-05-16 | 2006-09-05 | Seagate Technology Llc | Method of forming a beveled writing pole of a perpendicular writing element |
US6947255B2 (en) * | 2002-03-22 | 2005-09-20 | International Business Machines Corporation | Magnetic head having a notched pole piece structure and method of making the same |
US6821717B2 (en) * | 2002-08-02 | 2004-11-23 | Headway Technologies, Inc. | Process to form narrow write track for magnetic recording |
US7106554B2 (en) * | 2003-04-10 | 2006-09-12 | Headway Technologies, Inc. | Perpendicular magnetic writer with magnetic potential control shield |
US7133255B2 (en) * | 2003-08-27 | 2006-11-07 | Hitachi Global Storage Technologies Netherlands, B.V. | Magnetic head having magnetic pole with lengthened neck pole tip and coplanar yoke, and method of fabrication thereof |
US7086139B2 (en) * | 2004-04-30 | 2006-08-08 | Hitachi Global Storage Technologies Netherlands B.V. | Methods of making magnetic write heads using electron beam lithography |
US7990652B2 (en) | 2007-12-03 | 2011-08-02 | Hitachi Global Storage Technologies Netherlands B.V. | Perpendicular magnetic write head with stepped write pole for reduced MCW dependency on skew angle |
JP2009283094A (ja) * | 2008-05-26 | 2009-12-03 | Fujitsu Ltd | 磁気ヘッドおよび磁気ディスク装置 |
US8808524B2 (en) * | 2009-01-27 | 2014-08-19 | Seagate Technology Llc | Direct electrodeposition of magnetic recording head features |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60133516A (ja) * | 1983-12-22 | 1985-07-16 | Hitachi Ltd | 薄膜磁気ヘツドの製造方法 |
JPS6292212A (ja) * | 1985-10-18 | 1987-04-27 | Seiko Epson Corp | 磁気ヘツドの製造方法 |
JPS62204419A (ja) * | 1986-03-03 | 1987-09-09 | Fujitsu Ltd | 薄膜磁気ヘツドの製造方法 |
JPS6355711A (ja) * | 1986-05-13 | 1988-03-10 | Fujitsu Ltd | 薄膜磁気ヘツドの製造方法 |
US4803580A (en) * | 1987-02-17 | 1989-02-07 | Magnetic Peripherals Inc. | Double-gap magnetoresistive head having an elongated central write/shield pole completely shielding the magnetoresistive sensor strip in the read gap |
JPH01296418A (ja) * | 1988-05-25 | 1989-11-29 | Canon Inc | 薄膜磁気ヘッドおよびその製造方法 |
JPH0268704A (ja) * | 1988-09-02 | 1990-03-08 | Yamaha Corp | 薄膜ヘッドの製造方法 |
CA1323695C (en) * | 1988-12-30 | 1993-10-26 | Shyam Chandra Das | Recording heads with side shields |
JP2728487B2 (ja) * | 1989-02-08 | 1998-03-18 | 株式会社日立製作所 | 録再分離複合型磁気ヘッド |
US5116719A (en) * | 1990-02-15 | 1992-05-26 | Seagate Technology, Inc. | Top pole profile for pole tip trimming |
US5141623A (en) * | 1990-02-15 | 1992-08-25 | Seagate Technology, Inc. | Method for aligning pole tips in a thin film head |
JP2830559B2 (ja) * | 1991-11-20 | 1998-12-02 | 日本電気株式会社 | 複合型薄膜磁気ヘッドの製造方法 |
JPH064832A (ja) * | 1992-06-17 | 1994-01-14 | Sony Corp | 複合型薄膜磁気ヘッド |
US5283942A (en) * | 1992-12-29 | 1994-02-08 | International Business Machines Corporation | Sacrificial layer planarization process for fabricating a narrow thin film inductive head |
US5438747A (en) * | 1994-03-09 | 1995-08-08 | International Business Machines Corporation | Method of making a thin film merged MR head with aligned pole tips |
-
1994
- 1994-08-24 JP JP6199860A patent/JPH07296331A/ja active Pending
- 1994-08-24 EP EP94113206A patent/EP0640955B1/de not_active Expired - Lifetime
- 1994-08-24 DE DE69418551T patent/DE69418551T2/de not_active Expired - Fee Related
-
1996
- 1996-08-07 US US08/693,441 patent/US5809637A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0640955A1 (de) | 1995-03-01 |
JPH07296331A (ja) | 1995-11-10 |
US5809637A (en) | 1998-09-22 |
EP0640955B1 (de) | 1999-05-19 |
DE69418551D1 (de) | 1999-06-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |