DE2754536C2 - Ferritkern-Magnetkopf mit Verstärkungs-Füllmaterial - Google Patents
Ferritkern-Magnetkopf mit Verstärkungs-FüllmaterialInfo
- Publication number
- DE2754536C2 DE2754536C2 DE2754536A DE2754536A DE2754536C2 DE 2754536 C2 DE2754536 C2 DE 2754536C2 DE 2754536 A DE2754536 A DE 2754536A DE 2754536 A DE2754536 A DE 2754536A DE 2754536 C2 DE2754536 C2 DE 2754536C2
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- core
- magnetic head
- glass
- head according
- 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
Links
- 230000005291 magnetic effect Effects 0.000 title claims description 93
- 239000000463 material Substances 0.000 title claims description 52
- 229910000859 α-Fe Inorganic materials 0.000 title claims description 23
- 230000002787 reinforcement Effects 0.000 title claims description 17
- 239000000945 filler Substances 0.000 title claims description 9
- 239000011521 glass Substances 0.000 claims description 56
- 239000011162 core material Substances 0.000 claims description 44
- 239000000203 mixture Substances 0.000 claims description 32
- 239000012763 reinforcing filler Substances 0.000 claims description 8
- 230000005294 ferromagnetic effect Effects 0.000 claims description 7
- 239000005355 lead glass Substances 0.000 claims description 7
- 239000000696 magnetic material Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 4
- 150000004706 metal oxides Chemical class 0.000 claims description 4
- 239000011195 cermet Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 claims description 2
- 101150018711 AASS gene Proteins 0.000 claims 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 235000011941 Tilia x europaea Nutrition 0.000 claims 1
- 230000003321 amplification Effects 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 239000010419 fine particle Substances 0.000 claims 1
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 claims 1
- 239000004571 lime Substances 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 239000003302 ferromagnetic material Substances 0.000 description 6
- 239000012779 reinforcing material Substances 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000006060 molten glass Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000156 glass melt Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000007970 homogeneous dispersion Substances 0.000 description 1
- NNGHIEIYUJKFQS-UHFFFAOYSA-L hydroxy(oxo)iron;zinc Chemical compound [Zn].O[Fe]=O.O[Fe]=O NNGHIEIYUJKFQS-UHFFFAOYSA-L 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 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
- G11B5/133—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
- G11B5/1335—Assembling or shaping of elements
-
- 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
-
- 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 |
|---|---|---|---|
| JP14678876A JPS5370808A (en) | 1976-12-07 | 1976-12-07 | Magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2754536A1 DE2754536A1 (de) | 1978-06-08 |
| DE2754536C2 true DE2754536C2 (de) | 1986-02-20 |
Family
ID=15415542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2754536A Expired DE2754536C2 (de) | 1976-12-07 | 1977-12-07 | Ferritkern-Magnetkopf mit Verstärkungs-Füllmaterial |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4152741A (enExample) |
| JP (1) | JPS5370808A (enExample) |
| DE (1) | DE2754536C2 (enExample) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4317149A (en) * | 1980-06-02 | 1982-02-23 | International Business Machines Corporation | Magnetic head having static discharge means |
| JPS58130421A (ja) * | 1982-01-28 | 1983-08-03 | Victor Co Of Japan Ltd | 磁気ヘツド及びその製造方法 |
| DE3316747A1 (de) * | 1983-05-07 | 1984-11-08 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co KG, 8510 Fürth | Magnetkopf und verfahren zu seiner herstellung |
| US4755898A (en) * | 1983-06-13 | 1988-07-05 | Matsushita Electric Industrial Co., Ltd. | Amorphous magnetic head |
| DE3584607D1 (de) * | 1984-09-19 | 1991-12-12 | Hitachi Maxell | Magnetkopf. |
| JPS62114108A (ja) * | 1985-11-14 | 1987-05-25 | Mitsubishi Electric Corp | 電磁変換素子 |
| US5245488A (en) * | 1986-08-13 | 1993-09-14 | Seiko Epson Corporation | Low-noise composite magnetic head for recording and producing |
| JPS63211110A (ja) * | 1987-02-27 | 1988-09-02 | Pioneer Electronic Corp | 磁気ヘツドの製造方法 |
| JP4851062B2 (ja) * | 2003-12-10 | 2012-01-11 | スミダコーポレーション株式会社 | インダクタンス素子の製造方法 |
| EP2026595B1 (de) | 2007-08-14 | 2010-03-31 | Klaus Reck | Koaxiallautsprecher |
| DE102012213263A1 (de) * | 2011-09-20 | 2013-03-21 | Robert Bosch Gmbh | Handwerkzeugvorrichtung mit zumindest einer Ladespule |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1269159B (de) * | 1961-04-07 | 1968-05-30 | Philips Nv | Magnetkopf aus zwei, durch einen mit nichtmagnetischem Material ausgefuellten Nutzspalt getrennten Kreisteilen zum Aufzeichnen, Wiedergeben und/oder Loeschen von videofrequenten Signalen und Verfahren zu seiner Herstellung |
| AT237059B (de) * | 1962-09-28 | 1964-11-25 | Philips Nv | Verfahren zur Herstellung eines Magnetkopfes |
| US3369292A (en) * | 1962-11-23 | 1968-02-20 | North American Phillips Compan | Method of forming glass bonded heads |
| US3641281A (en) * | 1964-08-18 | 1972-02-08 | Peter F Varadi | Magnetic transducer having a conductive metal powder gap spacer |
| US3440360A (en) * | 1964-10-03 | 1969-04-22 | Matsushita Electric Industrial Co Ltd | Magnetic head with notched pole tips |
| US3605259A (en) * | 1968-03-06 | 1971-09-20 | Matsushita Electric Industrial Co Ltd | Method of manufacturing a pair of pole pieces for a magnetic head |
| US3721000A (en) * | 1968-03-15 | 1973-03-20 | Sony Corp | Method of making a magnetic head |
| US3634933A (en) * | 1968-05-01 | 1972-01-18 | Rca Corp | Magnetic head method |
| US3579214A (en) * | 1968-06-17 | 1971-05-18 | Ibm | Multichannel magnetic head with common leg |
| DE1931003C3 (de) * | 1969-06-19 | 1978-04-13 | Robert Bosch Gmbh, 7000 Stuttgart | Magnetkopf für ein Magnetspeichergerät |
| GB1423520A (en) * | 1972-12-29 | 1976-02-04 | Data Recording Instr Co | Manufacture of magnetic transducing heads |
| JPS5427132B2 (enExample) * | 1974-02-21 | 1979-09-07 |
-
1976
- 1976-12-07 JP JP14678876A patent/JPS5370808A/ja active Granted
-
1977
- 1977-12-02 US US05/856,963 patent/US4152741A/en not_active Expired - Lifetime
- 1977-12-07 DE DE2754536A patent/DE2754536C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2754536A1 (de) | 1978-06-08 |
| JPS5370808A (en) | 1978-06-23 |
| US4152741A (en) | 1979-05-01 |
| JPS5652371B2 (enExample) | 1981-12-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| OF | Willingness to grant licences before publication of examined application | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |