HK1028922A1 - Method and apparatus for testing composite type magnetic head. - Google Patents

Method and apparatus for testing composite type magnetic head.

Info

Publication number
HK1028922A1
HK1028922A1 HK00108306A HK00108306A HK1028922A1 HK 1028922 A1 HK1028922 A1 HK 1028922A1 HK 00108306 A HK00108306 A HK 00108306A HK 00108306 A HK00108306 A HK 00108306A HK 1028922 A1 HK1028922 A1 HK 1028922A1
Authority
HK
Hong Kong
Prior art keywords
magnetic head
type magnetic
composite type
testing composite
testing
Prior art date
Application number
HK00108306A
Other languages
English (en)
Inventor
Nozomu Hachisuka
Kenji Inage
Toshiaki Maeda
Original Assignee
Tdk Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tdk Corp filed Critical Tdk Corp
Publication of HK1028922A1 publication Critical patent/HK1028922A1/xx

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
    • G11B5/3163—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
    • G11B5/3166—Testing or indicating in relation thereto, e.g. before the fabrication is completed
    • 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
    • G11B5/455—Arrangements for functional testing of heads; Measuring arrangements for heads
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • G11B2005/0013—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
    • G11B2005/0016—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Hall/Mr Elements (AREA)
HK00108306A 1999-01-28 2000-12-21 Method and apparatus for testing composite type magnetic head. HK1028922A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP02013599A JP3603636B2 (ja) 1999-01-28 1999-01-28 複合型磁気ヘッドの検査方法及び装置

Publications (1)

Publication Number Publication Date
HK1028922A1 true HK1028922A1 (en) 2001-03-09

Family

ID=12018702

Family Applications (1)

Application Number Title Priority Date Filing Date
HK00108306A HK1028922A1 (en) 1999-01-28 2000-12-21 Method and apparatus for testing composite type magnetic head.

Country Status (5)

Country Link
US (1) US6433540B1 (xx)
JP (1) JP3603636B2 (xx)
CN (1) CN1188838C (xx)
HK (1) HK1028922A1 (xx)
SG (1) SG83178A1 (xx)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6590388B2 (en) * 2000-08-04 2003-07-08 Seagate Technology Llc Non-destructive defective magneto-resistive head detection utilizing a micro-track
JP2004199796A (ja) * 2002-12-19 2004-07-15 Shinka Jitsugyo Kk 薄膜磁気ヘッドの特性測定用プローブピンの接続方法及び薄膜磁気ヘッドの特性測定方法
US7138797B2 (en) * 2004-09-30 2006-11-21 Hitachi Global Storage Technologies Netherlands, B.V. Reverse magnetic reset to screen for weakly pinned heads
US7113355B2 (en) * 2004-12-03 2006-09-26 Matsushita Electric Industrial Co., Ltd. System and method for detecting head instability
US7839605B2 (en) * 2005-11-13 2010-11-23 Hitachi Global Storage Technologies Netherlands B.V. Electrical signal-processing device integrating a flux sensor with a flux generator in a magnetic circuit
JP2007317303A (ja) * 2006-05-25 2007-12-06 Fujitsu Ltd 磁気抵抗効果ヘッドの検査方法および検査装置
US8120353B2 (en) * 2008-04-28 2012-02-21 International Business Machines Corporation Methods for detecting damage to magnetoresistive sensors
US7940042B2 (en) * 2009-01-07 2011-05-10 Tdk Corporation Method and apparatus for testing magnetoresistive effect element
US10311902B2 (en) * 2014-09-30 2019-06-04 International Business Machines Corporation Measuring and analyzing electrical resistance in tunneling magnetoresist sensors to identify damaged sensors
JP7265427B2 (ja) * 2019-06-26 2023-04-26 株式会社東芝 磁気ヘッドの評価方法及び磁気ヘッドの評価装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5134366A (en) * 1991-06-21 1992-07-28 Digital Equipment Corporation Magnetic head testing apparatus for detecting occurrences of popcorn noise amid externally generated noise
JP2692515B2 (ja) 1992-11-05 1997-12-17 ティーディーケイ株式会社 磁気抵抗効果ヘッドの検査方法及び装置
US5479098A (en) * 1993-03-15 1995-12-26 Trace Mountain Products, Inc. Loop-back circuit for testing a magnetic recording system with simultaneous read and write functions
JP2674571B2 (ja) * 1995-06-01 1997-11-12 ティーディーケイ株式会社 複合型磁気ヘッドの検査方法及び装置
US5668477A (en) * 1995-02-16 1997-09-16 Read-Rite Corporation Noise detecting apparatus for magnetic heads
US5589777A (en) * 1995-06-21 1996-12-31 Hewlett-Packard Company Circuit and method for testing a disk drive head assembly without probing
JP2773714B2 (ja) * 1995-10-26 1998-07-09 ティーディーケイ株式会社 磁気抵抗効果素子を有する磁気ヘッドの検査方法及び装置
US5987038A (en) 1996-12-23 1999-11-16 Texas Instruments Incorporated Sync detect circuit
US6111406A (en) * 1997-08-28 2000-08-29 International Business Machines Corporation System and method for testing a write head in a combined magnetic head using an associated read sensor in the combined head

Also Published As

Publication number Publication date
JP3603636B2 (ja) 2004-12-22
CN1262505A (zh) 2000-08-09
CN1188838C (zh) 2005-02-09
SG83178A1 (en) 2001-09-18
JP2000222713A (ja) 2000-08-11
US6433540B1 (en) 2002-08-13

Similar Documents

Publication Publication Date Title
HK1032104A1 (en) Self-diagnosing method and apparatus for refrigerator.
HK1040120A1 (zh) 產生信息摘要的方法和裝置
EP1336077A4 (en) PROCESS AND DEVICE FOR PROVIDING LOCAL INFORMATION
EP1229154A4 (en) METHOD AND DEVICE FOR ELECTROPLATING
SG91264A1 (en) Reproducing apparatus and reproducing method
GB2383422B (en) Method and apparatus for well testing
HK1082588A1 (en) Information recording apparatus and information recording method
HK1022981A1 (en) Recording / reproducing method, recording and reproducing apparatus
SG88769A1 (en) Additional information embedding method, additional information detecting method, additional information enbedding apparatus and additional information detecting apparatus
SG100728A1 (en) Mounting apparatus, mounting method, and recording/reproducing apparatus
HK1040285A1 (en) Method and apparatus for testing poles.
AU3267999A (en) Nqr testing method and apparatus
EP1167964A4 (en) METHOD AND DEVICE FOR NON-DESTRUCTIVE TESTING
HK1069667A1 (en) Information recording method and apparatus
HK1024329A1 (en) Apparatus and method for lapping magnetic heads
SG93260A1 (en) Recording apparatus and recording method
HK1028922A1 (en) Method and apparatus for testing composite type magnetic head.
AU6215200A (en) Method and apparatus for testing magnetic head elements
ZA200003026B (en) Method and apparatus for producing iron.
GB2370162B (en) Apparatus and method for propulsion
EP1343151A4 (en) RECORDING DEVICE AND RECORDING METHOD
GB9828367D0 (en) Method and apparatus for communicating information
GB2351819B (en) Reproducing apparatus and reproducing method
HK1042580A1 (zh) 錄取資料儀器和錄取資料方法
HK1027657A1 (en) Apparatus and method for recording and reproducingthe recording medium.

Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20090128