DE3137482C2 - - Google Patents
Info
- Publication number
- DE3137482C2 DE3137482C2 DE3137482A DE3137482A DE3137482C2 DE 3137482 C2 DE3137482 C2 DE 3137482C2 DE 3137482 A DE3137482 A DE 3137482A DE 3137482 A DE3137482 A DE 3137482A DE 3137482 C2 DE3137482 C2 DE 3137482C2
- Authority
- DE
- Germany
- 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
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
-
- 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
- G11B5/133—Structure or manufacture of heads, e.g. inductive with cores composed of particles, e.g. with dust cores, with ferrite cores with cores composed of isolated magnetic particles
-
- 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
- G11B5/193—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features the pole pieces being ferrite or other magnetic particles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55130734A JPS5755522A (en) | 1980-09-22 | 1980-09-22 | Magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3137482A1 DE3137482A1 (de) | 1982-05-13 |
| DE3137482C2 true DE3137482C2 (US08087162-20120103-C00010.png) | 1987-04-02 |
Family
ID=15041345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19813137482 Granted DE3137482A1 (de) | 1980-09-22 | 1981-09-21 | Magnetkopf |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4450494A (US08087162-20120103-C00010.png) |
| JP (1) | JPS5755522A (US08087162-20120103-C00010.png) |
| DE (1) | DE3137482A1 (US08087162-20120103-C00010.png) |
| NL (1) | NL8104340A (US08087162-20120103-C00010.png) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5891517A (ja) * | 1981-11-27 | 1983-05-31 | Hitachi Ltd | 磁気記録再生装置 |
| NL8200481A (nl) * | 1982-02-09 | 1983-09-01 | Philips Nv | Magneetkop. |
| JPS5914101A (ja) * | 1982-07-14 | 1984-01-25 | Hitachi Ltd | 磁気記録再生方式 |
| JPS6089805A (ja) * | 1983-10-24 | 1985-05-20 | Sony Corp | 磁気消去ヘツド |
| NL8403595A (nl) * | 1984-11-27 | 1986-06-16 | Philips Nv | Magneetkop met kerndelen van amorf ferromagnetisch metaal. |
| EP0314172B1 (en) * | 1987-10-29 | 1994-03-09 | Fuji Photo Film Co., Ltd. | Film magnetic head |
| US5135818A (en) * | 1989-03-28 | 1992-08-04 | Hitachi Maxell, Ltd. | Thin soft magnetic film and method of manufacturing the same |
| US5001588A (en) * | 1989-06-30 | 1991-03-19 | Ampex Corporation | Composite core magnetic transducer having a wedge shaped core portion |
| US5426550A (en) * | 1990-06-08 | 1995-06-20 | Matsushita Electric Industrial Co., Ltd. | Multitrack magnetic head assembly for scanning a magnetic tape with a plurality of magnetic head tips |
| JPH05114110A (ja) * | 1991-10-22 | 1993-05-07 | Hitachi Metals Ltd | 磁歪振動ノイズを減少させた浮上型磁気ヘツド |
| JPH05197903A (ja) * | 1991-10-28 | 1993-08-06 | Canon Inc | 光磁気記録装置 |
| JP3462019B2 (ja) * | 1996-10-23 | 2003-11-05 | アルプス電気株式会社 | 磁気ヘッド |
| JP3517067B2 (ja) * | 1996-11-29 | 2004-04-05 | アルプス電気株式会社 | 磁気ヘッド |
| JPH10162308A (ja) * | 1996-11-29 | 1998-06-19 | Alps Electric Co Ltd | 磁気ヘッド |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3810245A (en) * | 1971-06-28 | 1974-05-07 | Sony Corp | Single crystal ferrite magnetic head |
| US4245269A (en) * | 1977-03-15 | 1981-01-13 | Yasinavichyus Rimvidas P | Magnetic head and method of fabricating the same |
| JPS5496012A (en) * | 1978-01-13 | 1979-07-30 | Victor Co Of Japan Ltd | Magnetic head |
-
1980
- 1980-09-22 JP JP55130734A patent/JPS5755522A/ja active Granted
-
1981
- 1981-09-21 NL NL8104340A patent/NL8104340A/nl not_active Application Discontinuation
- 1981-09-21 DE DE19813137482 patent/DE3137482A1/de active Granted
- 1981-09-22 US US06/304,612 patent/US4450494A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0542725B2 (US08087162-20120103-C00010.png) | 1993-06-29 |
| NL8104340A (nl) | 1982-04-16 |
| JPS5755522A (en) | 1982-04-02 |
| DE3137482A1 (de) | 1982-05-13 |
| US4450494A (en) | 1984-05-22 |
Similar Documents
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 | ||
| 8339 | Ceased/non-payment of the annual fee |