KR890702183A - 박층 자기 헤드의 그라인딩의 종료 탐지방법 - Google Patents
박층 자기 헤드의 그라인딩의 종료 탐지방법Info
- Publication number
- KR890702183A KR890702183A KR1019890701160A KR890701160A KR890702183A KR 890702183 A KR890702183 A KR 890702183A KR 1019890701160 A KR1019890701160 A KR 1019890701160A KR 890701160 A KR890701160 A KR 890701160A KR 890702183 A KR890702183 A KR 890702183A
- Authority
- KR
- South Korea
- Prior art keywords
- grinding
- active face
- dielectric material
- conductive layer
- material layer
- 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
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
- G11B5/23—Gap features
-
- 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
-
- 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
-
- 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
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Heads (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 평면 헤드의 간략한 구조를 도시한다. 제 2 도 내지 제 6 도는 제 1 도에 도시된 구조에 적용되는 본 발명에 의한 방법에 여러 단계를 도시한다.
Claims (7)
- 헤드는 갭(4)에 의해 분리된 두 자기 폴(1, 2)에 의해 이루어진 액티브 페이스(3)를 방법의 수행 단계에서 포함하며, 탐지는 전기 회로의 중지를 통하여 이루어지는 방법으로서, 하나 이상의 박층 자기 헤드의 그라인딩의 종료를 탐지하는 방법에 있어서, 상기 전기 회로를 만들기 위해 전체의 액티브 페이스(3)에 전도층(7)을 침전시키는 단계와, 상기 전도층으로 피복된 액티브 페이스의 에칭 단계와, 에칭된 액티브 페이스에 유전체 재료층(8)을 침전시키는 단계와, 유전체 재료층(8)이 없는 부분의 액티브 페이스에서 시작하여 상기 갭(4) 위에 있는 전도층(7) 부분이 모두 제거될때까지 액티브 페이스를 그라인딩하는 단계를 포함하며, 상기 제거는 두 자기 폴 사이의 저항의 갑작스런 변화로 알게됨을 특징으로 하는 방법.
- 제 1 항에 있어서, 그라인딩은 원통형임을 특징으로 하는 방법.
- 제 1 항에 있어서, 그라인딩은 평면형임을 특징으로 하는 방법.
- 제 2 항에 있어서, 액티브 페이스의 그라인딩은 상기 갭(4)에 대해 대칭적으로 이루어짐을 특징으로 하는 방법.
- 제 1 항 내지 제 4 항중 어느 한 항에 있어서, 유전체 재료층(8)의 두께는 최소한 자기 폴(1, 2)의 두께와 동일함을 특징으로 하는 방법.
- 제 1 항 내지 제 5 항중 어느 한 항에 있어서, 상기 전도층(7)은 알루미늄 혹은 크롬으로 형성됨을 특징으로 하는 방법.
- 제 1 항 내지 제 6 항중 어느 한 항에 있어서, 상기 유전체 재료층(8)은 알루미나 혹은 실리카로 형성됨을 특징으로 하는 방법.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8714821A FR2622339A1 (fr) | 1987-10-27 | 1987-10-27 | Procede de detection de fin de polissage d'une tete magnetique couches minces |
FR87-14821 | 1987-10-27 | ||
PCT/FR1988/000518 WO1989004038A1 (fr) | 1987-10-27 | 1988-10-21 | Procede de detection de fin de polissage d'une tete magnetique couches minces |
Publications (1)
Publication Number | Publication Date |
---|---|
KR890702183A true KR890702183A (ko) | 1989-12-23 |
Family
ID=9356192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019890701160A KR890702183A (ko) | 1987-10-27 | 1988-10-21 | 박층 자기 헤드의 그라인딩의 종료 탐지방법 |
Country Status (8)
Country | Link |
---|---|
US (1) | US5013394A (ko) |
EP (1) | EP0339069B1 (ko) |
JP (1) | JPH02501783A (ko) |
KR (1) | KR890702183A (ko) |
CA (1) | CA1317097C (ko) |
DE (1) | DE3869397D1 (ko) |
FR (1) | FR2622339A1 (ko) |
WO (1) | WO1989004038A1 (ko) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2741470B1 (fr) * | 1995-11-22 | 1998-01-02 | Commissariat Energie Atomique | Procede de realisation d'une tete magnetique planaire et tete obtenue par ce procede |
JPS62152864A (ja) * | 1985-12-27 | 1987-07-07 | Canon Inc | 液体噴射記録ヘツドの製造方法 |
JPH0624045B2 (ja) * | 1989-10-03 | 1994-03-30 | 日本碍子株式会社 | 複合型磁気ヘッド用コアの製造方法 |
US5483468A (en) * | 1992-10-23 | 1996-01-09 | International Business Machines Corporation | System and method for concurrent recording and displaying of system performance data |
US5815909A (en) * | 1994-08-26 | 1998-10-06 | Aiwa Research And Development, Inc. | Method of making a thin film magnetic head including protected via connections through an electrically insulative substrate |
US5572392A (en) * | 1994-11-17 | 1996-11-05 | International Business Machines Corporation | Arbitrary pattern write head assembly for writing timing-based servo patterns on magnetic storage media |
JPH10333237A (ja) * | 1997-03-31 | 1998-12-18 | Nikon Corp | カメラの磁気読取り装置 |
JPH10340426A (ja) * | 1997-06-04 | 1998-12-22 | Fujitsu Ltd | 薄膜磁気ヘッドおよびその製造方法 |
US6721142B1 (en) | 2000-12-21 | 2004-04-13 | Western Digital (Fremont) Inc. | Non-corrosive GMR slider for proximity recording |
US7289334B2 (en) * | 2003-08-27 | 2007-10-30 | Epicenter, Inc. | Rack architecture and management system |
US7352540B1 (en) * | 2004-12-20 | 2008-04-01 | Storage Technology Corporation | Giant magneto-resistive (GMR) transducer having separation structure separating GMR sensor from head-tape interface |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1415131A (en) * | 1922-05-09 | Delivering and winding cinematograph film | ||
US3495049A (en) * | 1968-03-08 | 1970-02-10 | Michigan Magnetics Inc | Magnetic transducer wear indicator |
GB1415131A (en) * | 1974-03-15 | 1975-11-26 | Burroughs Corp | Magnetic transducer head having magnetic shield and wear indicator |
NL8200531A (nl) * | 1982-02-12 | 1983-09-01 | Philips Nv | Magneetkop met gedeeltelijk uitgeetste wikkelopening. |
JPS5930227A (ja) * | 1982-08-10 | 1984-02-17 | Matsushita Electric Ind Co Ltd | 磁気ヘツドの製造方法 |
JPS61122909A (ja) * | 1984-11-16 | 1986-06-10 | Sanyo Electric Co Ltd | 薄膜磁気ヘツドの製造方法 |
JPS61122908A (ja) * | 1984-11-16 | 1986-06-10 | Sanyo Electric Co Ltd | 磁気ヘツドの製造方法 |
-
1987
- 1987-10-27 FR FR8714821A patent/FR2622339A1/fr not_active Withdrawn
-
1988
- 1988-10-21 KR KR1019890701160A patent/KR890702183A/ko not_active Application Discontinuation
- 1988-10-21 EP EP88909535A patent/EP0339069B1/fr not_active Expired - Lifetime
- 1988-10-21 WO PCT/FR1988/000518 patent/WO1989004038A1/fr active IP Right Grant
- 1988-10-21 JP JP63508829A patent/JPH02501783A/ja active Pending
- 1988-10-21 DE DE8888909535T patent/DE3869397D1/de not_active Expired - Fee Related
- 1988-10-21 US US07/381,749 patent/US5013394A/en not_active Expired - Fee Related
- 1988-10-26 CA CA000581346A patent/CA1317097C/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA1317097C (fr) | 1993-05-04 |
DE3869397D1 (de) | 1992-04-23 |
JPH02501783A (ja) | 1990-06-14 |
FR2622339A1 (fr) | 1989-04-28 |
US5013394A (en) | 1991-05-07 |
WO1989004038A1 (fr) | 1989-05-05 |
EP0339069A1 (fr) | 1989-11-02 |
EP0339069B1 (fr) | 1992-03-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid |