HK85591A - Magnetic head having a step-shaped gap - Google Patents
Magnetic head having a step-shaped gapInfo
- Publication number
- HK85591A HK85591A HK855/91A HK85591A HK85591A HK 85591 A HK85591 A HK 85591A HK 855/91 A HK855/91 A HK 855/91A HK 85591 A HK85591 A HK 85591A HK 85591 A HK85591 A HK 85591A
- Authority
- HK
- Hong Kong
- Prior art keywords
- gap
- magnetic head
- core
- width
- central gap
- 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
-
- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/584—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes
- G11B5/588—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes by controlling the position of the rotating heads
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/46—Controlling, regulating, or indicating speed
- G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
-
- 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
- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/488—Disposition of heads
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Claims (8)
1. Magnetkopf mit einem Kern aus magnetischem Material mit zwei im Abstand voneinander angeordneten Kernteilen mit einer Breite grösser als die Breite einer Aufnahme/-Wiedergabespur, wobei zwischen den Kernteilen ein mit nicht magnetischem Werkstoff gefüllter Spalt mit einem zentralen Spaltteil gebildet ist, dessen Spaltlänge zum Übertragen der Trägerfrequenz eines Videosignals gewählt ist, wobei der zentrale Spaltteil an beiden Seiten Seitenspalte mit einer Spaltlänge aufweist, die zum Unterdrücken der Trägerfrequenz eines Videosignals ausgewählt ist, dadurch gekennzeichnet, dass die Seitenspalte in Aussparungen in den Seitenrändern der Kernteile auslaufen, wobei ihre Breiten im wesentlichen gleich der Breite des zentralen Spaltteils und ihre Längen zum Wiedergeben von Spurpositionierungssignalen gewählt sind.
2. Magnetkopf nach Anspruch 1, dadurch gekennzeichnet, dass die Längen der Seitenspalte zum Wiedergeben von Spurpositionierungssignalen mit einer Wellenlänge in der Grössenordnung von 50 um ausgelegt sind.
3. Magnetkopf nach Anspruch 1, dadurch gekennzeichnet, dass die Längen der Seitenspalte zumindest zehnmal grösser als die Länge des zentralen Spaltteils sind.
4. Magnetkopf nach Anspruch 1, dadurch gekennzeichnet, dass ein Kernteil ein flache, spaltbegrenzende Fläche und der andere Kernteil eine spaltbegrenzende Fläche besitzt, in der Kanäle mit einer bestimmten Tiefe an beiden Seiten des zentralen Spaltteils mittels eines Atzverfahrens angebracht sind.
5. Magnetkopf nach Anspruch 1, dadurch gekennzeichnet, dass beide Kernteile je eine spaltbegrenzende Fläche besitzen, in denen Kanäle mit einer bestimmten Tiefe an beiden Seiten des zentralen Spaltteils mittels eines Ätzverfahrens angebracht sind.
6. Magnetkopf nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Kanäle einen im wesentlichen rechteckigen Querschnitt besitzen.
7. Magnetkopf nach Anspruch 1, 4 oder 5, dadurch gekennzeichnet, dass der zentrale Spaltteil mit einem Werkstoff gefüllt ist, der eine höhere Widerstandsfähigkeit gegen einen Ätzvorgang als der Werkstoff des Kernes hat.
8. Magnetkopf nach Anspruch 5, dadurch gekennzeichnet, dass der Werkstoff des Kernes Mn-Zn-Ferrit und der den zentralen Spaltteil füllende Werkstoff A1203 ist.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8200530A NL8200530A (nl) | 1982-02-12 | 1982-02-12 | Magneetkop met stapvormige spleet. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| HK85591A true HK85591A (en) | 1991-11-08 |
Family
ID=19839243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HK855/91A HK85591A (en) | 1982-02-12 | 1991-10-31 | Magnetic head having a step-shaped gap |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4651249A (de) |
| EP (1) | EP0086015B1 (de) |
| JP (1) | JPS58146020A (de) |
| KR (1) | KR880001173B1 (de) |
| AT (1) | ATE19316T1 (de) |
| DE (1) | DE3362993D1 (de) |
| HK (1) | HK85591A (de) |
| NL (1) | NL8200530A (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2154359A (en) * | 1984-02-17 | 1985-09-04 | Hitachi Metals Ltd | Magnetic head |
| JPH01303610A (ja) * | 1988-05-31 | 1989-12-07 | Sanyo Electric Co Ltd | 磁気ヘッド |
| JPH01220109A (ja) * | 1988-02-29 | 1989-09-01 | Canon Electron Inc | 磁気ヘッド |
| US5375023A (en) * | 1992-12-29 | 1994-12-20 | International Business Machines Corporation | Submicron thin film inductive head with self-aligned staggered pole-tips |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1143225B (de) * | 1961-09-12 | 1963-02-07 | Telefunken Patent | Rotierende Magnetkopfanordnung zur Abtastung von breitbandigen Signalen, insbesondere von Fernsehsignalen |
| US3244818A (en) * | 1962-08-08 | 1966-04-05 | Rca Corp | Magnetic recording and reproducing apparatus |
| US3440360A (en) * | 1964-10-03 | 1969-04-22 | Matsushita Electric Industrial Co Ltd | Magnetic head with notched pole tips |
| DE2202731A1 (de) * | 1971-01-22 | 1972-08-03 | Ricoh Kk | Magnetkopf |
| JPS51138410A (en) * | 1975-05-26 | 1976-11-30 | Sony Corp | Method of recording and reproducing signal |
| US4100584A (en) * | 1975-12-11 | 1978-07-11 | Burroughs Corporation | Transducer head with narrow core structure |
| JPS5819698Y2 (ja) * | 1976-01-19 | 1983-04-22 | 三洋電機株式会社 | 磁気ヘッド |
| SU575680A1 (ru) * | 1976-06-18 | 1977-10-05 | Предприятие П/Я В-2645 | Сердечник магнитной головки |
| JPS53140016A (en) * | 1977-05-13 | 1978-12-06 | Hitachi Ltd | Magnetic head |
| JPS55153627U (de) * | 1977-12-28 | 1980-11-06 | ||
| GB2028185B (en) * | 1978-08-23 | 1982-07-14 | Data Recording Instr Co | Magnetic transducing heads |
-
1982
- 1982-02-12 NL NL8200530A patent/NL8200530A/nl not_active Application Discontinuation
-
1983
- 1983-01-27 EP EP83200148A patent/EP0086015B1/de not_active Expired
- 1983-01-27 DE DE8383200148T patent/DE3362993D1/de not_active Expired
- 1983-01-27 AT AT83200148T patent/ATE19316T1/de not_active IP Right Cessation
- 1983-02-09 KR KR1019830000513A patent/KR880001173B1/ko not_active Expired
- 1983-02-10 JP JP58019899A patent/JPS58146020A/ja active Granted
-
1986
- 1986-01-03 US US06/816,683 patent/US4651249A/en not_active Expired - Fee Related
-
1991
- 1991-10-31 HK HK855/91A patent/HK85591A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3362993D1 (en) | 1986-05-22 |
| NL8200530A (nl) | 1983-09-01 |
| JPH0458648B2 (de) | 1992-09-18 |
| KR880001173B1 (ko) | 1988-07-02 |
| KR840003879A (ko) | 1984-10-04 |
| ATE19316T1 (de) | 1986-05-15 |
| EP0086015B1 (de) | 1986-04-16 |
| JPS58146020A (ja) | 1983-08-31 |
| US4651249A (en) | 1987-03-17 |
| EP0086015A1 (de) | 1983-08-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |