JPS57198523A - Recording and reproducing magnetic head - Google Patents
Recording and reproducing magnetic headInfo
- Publication number
- JPS57198523A JPS57198523A JP8204581A JP8204581A JPS57198523A JP S57198523 A JPS57198523 A JP S57198523A JP 8204581 A JP8204581 A JP 8204581A JP 8204581 A JP8204581 A JP 8204581A JP S57198523 A JPS57198523 A JP S57198523A
- Authority
- JP
- Japan
- Prior art keywords
- gap
- recording
- magnetic head
- low frequencies
- reproducing magnetic
- 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.)
- Pending
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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Abstract
PURPOSE:To prevent cross talk at low frequencies, by using different recording and reproducing frequency characteristics for a gap of magnetic head. CONSTITUTION:Assuming that l at both ends of gap is as large as l1 and the gap at the center is as small as l2. Thus, at low frequencies, remarkable attenuation is obtained at both ends of recording tracks, allowing to reduce cross talk. The gap 12 is taken large at the center as GM and smaller at the ends as GN. The output at high and low frequencies can be set with a desired rate by suitably selecting the GM and GN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8204581A JPS57198523A (en) | 1981-05-29 | 1981-05-29 | Recording and reproducing magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8204581A JPS57198523A (en) | 1981-05-29 | 1981-05-29 | Recording and reproducing magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57198523A true JPS57198523A (en) | 1982-12-06 |
Family
ID=13763537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8204581A Pending JPS57198523A (en) | 1981-05-29 | 1981-05-29 | Recording and reproducing magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57198523A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5245854A (en) * | 1991-01-10 | 1993-09-21 | Mechinefabriek Wila B.V. | Press tool and an adaptor and a press therefor |
| WO2001026097A1 (en) * | 1999-10-05 | 2001-04-12 | Seagate Technology, Llc | Longitudinal magnetic recording heads with variable-length gaps |
| US6707642B1 (en) | 2000-02-04 | 2004-03-16 | Seagate Technology Llc | Longitudinal magnetic recording head with reduced side fringing |
| US6771462B1 (en) | 1999-09-20 | 2004-08-03 | Seagate Technology Llc | Perpendicular recording head including concave tip |
| US6865056B1 (en) | 1999-10-05 | 2005-03-08 | Seagate Technology Llc | Longitudinal magnetic recording heads with variable-length gaps |
-
1981
- 1981-05-29 JP JP8204581A patent/JPS57198523A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5245854A (en) * | 1991-01-10 | 1993-09-21 | Mechinefabriek Wila B.V. | Press tool and an adaptor and a press therefor |
| US6771462B1 (en) | 1999-09-20 | 2004-08-03 | Seagate Technology Llc | Perpendicular recording head including concave tip |
| WO2001026097A1 (en) * | 1999-10-05 | 2001-04-12 | Seagate Technology, Llc | Longitudinal magnetic recording heads with variable-length gaps |
| US6865056B1 (en) | 1999-10-05 | 2005-03-08 | Seagate Technology Llc | Longitudinal magnetic recording heads with variable-length gaps |
| US6707642B1 (en) | 2000-02-04 | 2004-03-16 | Seagate Technology Llc | Longitudinal magnetic recording head with reduced side fringing |
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