DE3769301D1 - Magnetkopf mit einem elektro-chemisch inerten spalt aus hartem material. - Google Patents
Magnetkopf mit einem elektro-chemisch inerten spalt aus hartem material.Info
- Publication number
- DE3769301D1 DE3769301D1 DE8787202367T DE3769301T DE3769301D1 DE 3769301 D1 DE3769301 D1 DE 3769301D1 DE 8787202367 T DE8787202367 T DE 8787202367T DE 3769301 T DE3769301 T DE 3769301T DE 3769301 D1 DE3769301 D1 DE 3769301D1
- Authority
- DE
- Germany
- Prior art keywords
- electro
- magnetic head
- hard material
- gap made
- chemical inert
- 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 - Lifetime
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
- G11B5/40—Protective measures on heads, e.g. against excessive temperature
-
- 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
- G11B5/1875—"Composite" pole pieces, i.e. poles composed in some parts of magnetic particles and in some other parts of magnetic metal layers
- G11B5/1877—"Composite" pole pieces, i.e. poles composed in some parts of magnetic particles and in some other parts of magnetic metal layers including at least one magnetic thin film
- G11B5/1878—"Composite" pole pieces, i.e. poles composed in some parts of magnetic particles and in some other parts of magnetic metal layers including at least one magnetic thin film disposed immediately adjacent to the transducing gap, e.g. "Metal-In-Gap" 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
- G11B5/187—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
- G11B5/235—Selection of material for gap filler
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8603078 | 1986-12-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3769301D1 true DE3769301D1 (de) | 1991-05-16 |
Family
ID=19848941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8787202367T Expired - Lifetime DE3769301D1 (de) | 1986-12-03 | 1987-11-30 | Magnetkopf mit einem elektro-chemisch inerten spalt aus hartem material. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4887177A (de) |
EP (1) | EP0273496B1 (de) |
JP (1) | JP2554111B2 (de) |
KR (1) | KR960005402B1 (de) |
DE (1) | DE3769301D1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5038242A (en) * | 1988-05-13 | 1991-08-06 | Citizen Watch Co., Ltd. | Magnetic head containing a barrier layer |
JPH0258714A (ja) * | 1988-08-23 | 1990-02-27 | Nippon Mining Co Ltd | 磁気ヘッド |
US5029032A (en) * | 1988-10-19 | 1991-07-02 | Tdk Corporation | Magnetic head for high density recording |
JP2971891B2 (ja) * | 1989-03-20 | 1999-11-08 | ソニー株式会社 | 磁気ヘッド |
US5001589A (en) * | 1989-05-31 | 1991-03-19 | Seagate Technology, Inc. | Tungsten and tantalum diffusion barriers for Metal-In-Gap magnetic heads |
JPH0389510U (de) * | 1989-12-28 | 1991-09-12 | ||
NL9100192A (nl) * | 1991-02-04 | 1992-09-01 | Philips Nv | Magneetkop. |
JP2586367B2 (ja) * | 1992-04-15 | 1997-02-26 | 日本電気株式会社 | 軟磁性材料とその製造方法および磁気ヘッド |
JPH10228606A (ja) * | 1997-02-17 | 1998-08-25 | Matsushita Electric Ind Co Ltd | 磁気ヘッドおよびその製造方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3412455A (en) * | 1962-12-26 | 1968-11-26 | Philips Corp | Fusion bonding to non-metals |
US3672045A (en) * | 1970-04-29 | 1972-06-27 | Surface Technology Corp | Process for bonding magnetic heads |
JPS5345221A (en) * | 1976-10-05 | 1978-04-22 | Pioneer Electronic Corp | Magnetic head |
EP0108074A4 (de) * | 1982-05-04 | 1984-10-29 | Eastman Kodak Co | Magnetkopf mit hoch sättigungsfähiger spaltenverkleidung. |
NL8302093A (nl) * | 1983-06-13 | 1985-01-02 | Philips Nv | Magnetische overdrachtskop voor het schrijven van informatie op hoogcoercitieve registratie media. |
JPS62188009A (ja) * | 1986-02-13 | 1987-08-17 | Matsushita Electric Ind Co Ltd | 磁気ヘツドの製造法 |
CN1012113B (zh) * | 1986-05-21 | 1991-03-20 | 菲利浦光灯制造公司 | 磁芯面装有包层的磁传感头 |
FR2614136B1 (fr) * | 1987-04-14 | 1989-06-09 | Thomson Csf | Dispositif de commande optique d'une antenne a balayage |
JPS6416005A (en) * | 1987-07-09 | 1989-01-19 | Nec Corp | Transistor amplifier |
JPH07114328B2 (ja) * | 1989-01-13 | 1995-12-06 | 株式会社村田製作所 | ダブルバランスドミキサ |
JPH01221820A (ja) * | 1989-01-17 | 1989-09-05 | Res Inst Electric Magnetic Alloys | 角形ヒステリシス磁性リード片の製造法ならびにリードスイッチ |
-
1987
- 1987-11-30 EP EP87202367A patent/EP0273496B1/de not_active Expired - Lifetime
- 1987-11-30 DE DE8787202367T patent/DE3769301D1/de not_active Expired - Lifetime
- 1987-12-02 JP JP62303424A patent/JP2554111B2/ja not_active Expired - Lifetime
- 1987-12-03 US US07/128,367 patent/US4887177A/en not_active Expired - Fee Related
- 1987-12-03 KR KR1019870013755A patent/KR960005402B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP0273496A1 (de) | 1988-07-06 |
JPS63142508A (ja) | 1988-06-14 |
JP2554111B2 (ja) | 1996-11-13 |
KR960005402B1 (ko) | 1996-04-24 |
US4887177A (en) | 1989-12-12 |
KR880008272A (ko) | 1988-08-30 |
EP0273496B1 (de) | 1991-04-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: PHILIPS ELECTRONICS N.V., EINDHOVEN, NL |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V., EINDHOVEN, N |
|
8339 | Ceased/non-payment of the annual fee |