DE3634305C2 - - Google Patents
Info
- Publication number
- DE3634305C2 DE3634305C2 DE3634305A DE3634305A DE3634305C2 DE 3634305 C2 DE3634305 C2 DE 3634305C2 DE 3634305 A DE3634305 A DE 3634305A DE 3634305 A DE3634305 A DE 3634305A DE 3634305 C2 DE3634305 C2 DE 3634305C2
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- head
- along
- gap
- boundary
- 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
- 239000000696 magnetic material Substances 0.000 claims description 17
- 230000004907 flux Effects 0.000 claims description 7
- 230000035699 permeability Effects 0.000 claims description 2
- 238000013459 approach Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 34
- 230000000875 corresponding effect Effects 0.000 description 23
- 229910000859 α-Fe Inorganic materials 0.000 description 15
- 238000004804 winding Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000011521 glass Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 7
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 229910000702 sendust Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000035508 accumulation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000000156 glass melt Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22656885A JPS6286511A (ja) | 1985-10-09 | 1985-10-09 | 磁気ヘツド |
| JP27282485A JPS62132207A (ja) | 1985-12-03 | 1985-12-03 | 磁気ヘツドの製造方法 |
| JP21615086A JPS6371906A (ja) | 1986-09-13 | 1986-09-13 | 磁気ヘツド |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3634305A1 DE3634305A1 (de) | 1987-04-16 |
| DE3634305C2 true DE3634305C2 (en, 2012) | 1991-08-29 |
Family
ID=27329845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19863634305 Granted DE3634305A1 (de) | 1985-10-09 | 1986-10-08 | Magnetkopf |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4953048A (en, 2012) |
| DE (1) | DE3634305A1 (en, 2012) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR910009026B1 (ko) * | 1987-10-09 | 1991-10-28 | 알프스 덴기 가부시기가이샤 | 자기헤드 및 그 제조방법 |
| GB2268309B (en) * | 1992-06-16 | 1996-09-11 | Samsung Electro Mech | Composite magnetic head |
| JPH06203323A (ja) * | 1992-06-16 | 1994-07-22 | Samsung Electro Mech Co Ltd | 磁気ヘッド及びその製造方法 |
| US5602473A (en) * | 1994-02-18 | 1997-02-11 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for analysis of magnetic characteristics of magnetic device, magnetic head, and magnetic recording and reproducing apparatus |
| EP0743635B1 (en) | 1995-05-18 | 2001-08-29 | Matsushita Electric Industrial Co., Ltd. | A magnetic head, a production method thereof, and a magnetic recording/reproduction apparatus using the same |
| JP3524421B2 (ja) * | 1999-03-12 | 2004-05-10 | アルプス電気株式会社 | 磁気ヘッド |
| US7492550B2 (en) * | 2003-11-18 | 2009-02-17 | Tandberg Storage Asa | Magnetic recording head and method for high coercivity media, employing concentrated stray magnetic fields |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59207415A (ja) * | 1983-05-11 | 1984-11-24 | Hitachi Ltd | 複合型磁気ヘツドおよびその製造方法 |
| CA1236212A (en) * | 1983-12-30 | 1988-05-03 | Heikichi Sato | Magnetic transducer head with slanted thin film |
| JPS61126614A (ja) * | 1984-11-21 | 1986-06-14 | Victor Co Of Japan Ltd | 磁気ヘツド及びその製造方法 |
| JPS61190251A (ja) * | 1985-02-20 | 1986-08-23 | 松下電器産業株式会社 | 空気調和機 |
| JPH02107A (ja) * | 1987-08-07 | 1990-01-05 | Takeda Chem Ind Ltd | グリセリン誘導体 |
-
1986
- 1986-10-08 DE DE19863634305 patent/DE3634305A1/de active Granted
-
1989
- 1989-05-17 US US07/353,234 patent/US4953048A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US4953048A (en) | 1990-08-28 |
| DE3634305A1 (de) | 1987-04-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition |