JP4247107B2 - 磁気ヘッド及びそれを搭載した磁気記録再生装置 - Google Patents
磁気ヘッド及びそれを搭載した磁気記録再生装置 Download PDFInfo
- Publication number
- JP4247107B2 JP4247107B2 JP2003427681A JP2003427681A JP4247107B2 JP 4247107 B2 JP4247107 B2 JP 4247107B2 JP 2003427681 A JP2003427681 A JP 2003427681A JP 2003427681 A JP2003427681 A JP 2003427681A JP 4247107 B2 JP4247107 B2 JP 4247107B2
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- JP
- Japan
- Prior art keywords
- magnetic
- head
- length
- shield
- pole
- 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.)
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Description
図1は、本発明による磁気ディスク装置の概念図である。磁気ディスク装置は、モータ24によって回転する磁気ディスク11上の所定位置に、サスペンションアーム12の先端に固定されたスライダー13に搭載された磁気ヘッドによって磁化信号の記録再生を行う。ロータリアクチュエータ15を駆動することにより、磁気ヘッドの磁気ディスク半径方向の位置(トラック)を選択することができる。磁気ヘッドへの記録信号及び磁気ヘッドからの読み出し信号は信号処理回路35a,35bにて処理される。
Claims (4)
- 主磁極及び補助磁極を備える記録ヘッドと、
一対の再生シールド及び前記一対の再生シールドの間に設けられた再生素子を備える再生ヘッドとを含む磁気ヘッドにおいて、
前記一対の再生シールドは、それぞれ素子高さ方向に接続された透磁率の異なる第1の材料層と第2の材料層からなり、
浮上面に近い方の第1の材料層の透磁率が浮上面から遠い方の第2の材料層の透磁率より大きく、前記第1の材料層の浮上面からの素子高さ方向の長さが前記主磁極の長さより短いことを特徴とする磁気ヘッド。 - 請求項1記載の磁気ヘッドにおいて、前記第1の材料層の浮上面からの素子高さ方向の長さが前記主磁極の浮上面からバックコンタクト位置までの長さより短いことを特徴とする磁気ヘッド。
- 請求項1記載の磁気ヘッドにおいて、前記主磁極は前記補助磁極よりも前記一対の再生シールドに近い位置に配置されていることを特徴とする磁気ヘッド。
- 請求項1記載の磁気ヘッドにおいて、前記第1の材料層と第2の材料層の間に段差があることを特徴とする磁気ヘッド。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003427681A JP4247107B2 (ja) | 2003-12-24 | 2003-12-24 | 磁気ヘッド及びそれを搭載した磁気記録再生装置 |
US11/014,025 US7606006B2 (en) | 2003-12-24 | 2004-12-15 | Magnetic recording head and magnetic disk storage apparatus mounting the magnetic head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003427681A JP4247107B2 (ja) | 2003-12-24 | 2003-12-24 | 磁気ヘッド及びそれを搭載した磁気記録再生装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005190515A JP2005190515A (ja) | 2005-07-14 |
JP4247107B2 true JP4247107B2 (ja) | 2009-04-02 |
Family
ID=34697488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003427681A Expired - Fee Related JP4247107B2 (ja) | 2003-12-24 | 2003-12-24 | 磁気ヘッド及びそれを搭載した磁気記録再生装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7606006B2 (ja) |
JP (1) | JP4247107B2 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7782574B1 (en) * | 2005-04-11 | 2010-08-24 | Seagate Technology Llc | Magnetic heads disk drives and methods with thicker read shield structures for reduced stray field sensitivity |
US7042682B2 (en) * | 2003-10-17 | 2006-05-09 | Headway Technologies, Inc. | Fully shielded perpendicular recoding writer |
US7296338B2 (en) * | 2004-07-30 | 2007-11-20 | Hitachi Global Storage Technologies Netherlands B.V. | Method and apparatus for providing a reverse air bearing surface head with trailing shield design for perpendicular recording |
JP2006252694A (ja) * | 2005-03-11 | 2006-09-21 | Hitachi Global Storage Technologies Netherlands Bv | 垂直記録用磁気ヘッド |
JP2007220231A (ja) | 2006-02-17 | 2007-08-30 | Alps Electric Co Ltd | 垂直磁気記録ヘッド及びその製造方法 |
JP2007220261A (ja) * | 2006-02-20 | 2007-08-30 | Alps Electric Co Ltd | 薄膜磁気ヘッド |
JP2007257740A (ja) * | 2006-03-23 | 2007-10-04 | Hitachi Global Storage Technologies Netherlands Bv | 磁気記憶装置 |
JP4743782B2 (ja) * | 2006-09-20 | 2011-08-10 | セイコーインスツル株式会社 | 近接場光記録素子、近接場光ヘッド及び情報記録再生装置 |
JP2008234822A (ja) * | 2007-02-21 | 2008-10-02 | Hitachi High-Technologies Corp | 磁気ディスクの検査方法および磁気ディスク検査装置 |
US8218263B2 (en) * | 2008-12-22 | 2012-07-10 | Hitachi Global Storage Technologies Netherlands B.V. | Write head with different upper and lower yoke lengths and methods for making the same |
US8842389B2 (en) * | 2009-10-26 | 2014-09-23 | Headway Technologies, Inc. | Wrap-around shielded writer with highly homogeneous shield material |
US8902548B2 (en) * | 2010-04-30 | 2014-12-02 | Seagate Technology Llc | Head with high readback resolution |
US9240200B2 (en) * | 2012-11-28 | 2016-01-19 | Seagate Technology Llc | Magnetic element with crossed anisotropies |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3975772A (en) * | 1975-06-02 | 1976-08-17 | International Business Machines Corporation | Double shielded magnetorestive sensing element |
JP2768372B2 (ja) * | 1992-04-20 | 1998-06-25 | 日本電気株式会社 | 複合型薄膜磁気ヘッド |
SG34292A1 (en) * | 1994-12-30 | 1996-12-06 | Ibm | Read/write magnetoresistive (MR) head with sunken components |
JP2000048327A (ja) | 1998-07-31 | 2000-02-18 | Alps Electric Co Ltd | 薄膜磁気ヘッド |
JP2001176031A (ja) | 1999-12-16 | 2001-06-29 | Hitachi Metals Ltd | 薄膜磁気ヘッド |
JP3737927B2 (ja) | 2000-02-23 | 2006-01-25 | アルプス電気株式会社 | 複合磁気ヘッド |
JP4102013B2 (ja) | 2000-09-22 | 2008-06-18 | 株式会社東芝 | 垂直記録ヘッドおよび垂直磁気記録装置 |
US6943992B2 (en) | 2001-08-30 | 2005-09-13 | Headway Technologies, Inc. | Inverted write head for vertical recording |
US7031122B2 (en) * | 2001-10-26 | 2006-04-18 | Seagate Technology Llc | Magnetic shields for reduced variations of head-media spacing |
US6754050B2 (en) * | 2002-06-14 | 2004-06-22 | Seagate Technology Llc | Shared pole design for reduced thermal pole tip protrusion |
JP2004355669A (ja) * | 2003-05-27 | 2004-12-16 | Hitachi Ltd | 磁気記録ヘッド及びその製造方法 |
JP3944120B2 (ja) * | 2003-06-04 | 2007-07-11 | アルプス電気株式会社 | 磁気ヘッド |
US7102854B2 (en) * | 2003-10-03 | 2006-09-05 | Seagate Technology Llc | Transducing head with reduced side writing |
JP2005243124A (ja) * | 2004-02-25 | 2005-09-08 | Hitachi Global Storage Technologies Netherlands Bv | 磁気ヘッド及びそれを搭載した磁気記録再生装置 |
-
2003
- 2003-12-24 JP JP2003427681A patent/JP4247107B2/ja not_active Expired - Fee Related
-
2004
- 2004-12-15 US US11/014,025 patent/US7606006B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20050141142A1 (en) | 2005-06-30 |
US7606006B2 (en) | 2009-10-20 |
JP2005190515A (ja) | 2005-07-14 |
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