DE2539237C2 - Verfahren zur Herstellung von magnetischen Lese-, Schreib- und Löschköpfen mit großer Spaltbreite für magnetische Informationsträger - Google Patents
Verfahren zur Herstellung von magnetischen Lese-, Schreib- und Löschköpfen mit großer Spaltbreite für magnetische InformationsträgerInfo
- Publication number
- DE2539237C2 DE2539237C2 DE2539237A DE2539237A DE2539237C2 DE 2539237 C2 DE2539237 C2 DE 2539237C2 DE 2539237 A DE2539237 A DE 2539237A DE 2539237 A DE2539237 A DE 2539237A DE 2539237 C2 DE2539237 C2 DE 2539237C2
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- ferrite
- layer
- gap
- write
- 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
- 238000000034 method Methods 0.000 title claims description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000000969 carrier Substances 0.000 title claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 27
- 239000010410 layer Substances 0.000 description 22
- 238000007650 screen-printing Methods 0.000 description 14
- 239000000843 powder Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 9
- 238000005245 sintering Methods 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- 235000011837 pasties Nutrition 0.000 description 4
- 229910052596 spinel Inorganic materials 0.000 description 4
- 239000011029 spinel Substances 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910001308 Zinc ferrite Inorganic materials 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000003776 cleavage reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000007017 scission Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- WGEATSXPYVGFCC-UHFFFAOYSA-N zinc ferrite Chemical compound O=[Zn].O=[Fe]O[Fe]=O WGEATSXPYVGFCC-UHFFFAOYSA-N 0.000 description 2
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 description 1
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- G11B5/23—Gap features
- G11B5/235—Selection of material for gap filler
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49055—Fabricating head structure or component thereof with bond/laminating preformed parts, at least two magnetic
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Soft Magnetic Materials (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7430336A FR2284159A1 (fr) | 1974-09-06 | 1974-09-06 | Methode de fabrication de tetes magnetiques de lecture, d'ecriture et d'effacement pour memoires a support defilant, et tete obtenue par ladite methode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2539237A1 DE2539237A1 (de) | 1976-03-18 |
| DE2539237C2 true DE2539237C2 (de) | 1981-09-17 |
Family
ID=9142853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2539237A Expired DE2539237C2 (de) | 1974-09-06 | 1975-09-03 | Verfahren zur Herstellung von magnetischen Lese-, Schreib- und Löschköpfen mit großer Spaltbreite für magnetische Informationsträger |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4017966A (enExample) |
| JP (1) | JPS5153814A (enExample) |
| DE (1) | DE2539237C2 (enExample) |
| FR (1) | FR2284159A1 (enExample) |
| GB (1) | GB1512717A (enExample) |
| NL (1) | NL174773C (enExample) |
| SE (1) | SE409521B (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3542278A1 (de) * | 1984-12-01 | 1986-06-05 | Victor Company Of Japan, Ltd., Yokohama, Kanagawa | Magnetkopf und verfahren zu dessen herstellung |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2362465A1 (fr) * | 1976-08-16 | 1978-03-17 | Matsushita Electric Industrial Co Ltd | Tete magnetique et procede pour sa fabrication |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3145452A (en) * | 1958-03-24 | 1964-08-25 | Iit Res Inst | Method of making a magnetic head |
| US3188400A (en) * | 1961-01-09 | 1965-06-08 | Ampex | Ferrite coating |
| US3411202A (en) * | 1964-06-25 | 1968-11-19 | Ibm | Method of manufacturing recording heads |
| US3639701A (en) * | 1970-07-02 | 1972-02-01 | Ibm | Magnetic recording head having a nonmagnetic ferrite gap |
-
1974
- 1974-09-06 FR FR7430336A patent/FR2284159A1/fr active Granted
-
1975
- 1975-08-22 US US05/607,019 patent/US4017966A/en not_active Expired - Lifetime
- 1975-09-03 DE DE2539237A patent/DE2539237C2/de not_active Expired
- 1975-09-03 NL NLAANVRAGE7510386,A patent/NL174773C/xx not_active IP Right Cessation
- 1975-09-05 JP JP50107926A patent/JPS5153814A/ja active Pending
- 1975-09-05 GB GB36766/75A patent/GB1512717A/en not_active Expired
- 1975-09-05 SE SE7509914A patent/SE409521B/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3542278A1 (de) * | 1984-12-01 | 1986-06-05 | Victor Company Of Japan, Ltd., Yokohama, Kanagawa | Magnetkopf und verfahren zu dessen herstellung |
Also Published As
| Publication number | Publication date |
|---|---|
| SE409521B (sv) | 1979-08-20 |
| JPS5153814A (enExample) | 1976-05-12 |
| NL7510386A (nl) | 1976-03-09 |
| NL174773B (nl) | 1984-03-01 |
| FR2284159A1 (fr) | 1976-04-02 |
| GB1512717A (en) | 1978-06-01 |
| NL174773C (nl) | 1984-08-01 |
| FR2284159B1 (enExample) | 1979-06-01 |
| US4017966A (en) | 1977-04-19 |
| SE7509914L (sv) | 1976-03-08 |
| DE2539237A1 (de) | 1976-03-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| D2 | Grant after examination | ||
| 8328 | Change in the person/name/address of the agent |