PH26884A - Magnetic head core and process of manufacturing the same - Google Patents
Magnetic head core and process of manufacturing the same Download PDFInfo
- Publication number
- PH26884A PH26884A PH31707A PH31707A PH26884A PH 26884 A PH26884 A PH 26884A PH 31707 A PH31707 A PH 31707A PH 31707 A PH31707 A PH 31707A PH 26884 A PH26884 A PH 26884A
- Authority
- PH
- Philippines
- Prior art keywords
- core
- integral
- ferrite
- elongate
- magnetic
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 53
- 230000008569 process Effects 0.000 title claims description 51
- 238000004519 manufacturing process Methods 0.000 title claims description 29
- 229910000859 α-Fe Inorganic materials 0.000 claims description 171
- 239000002131 composite material Substances 0.000 claims description 62
- 239000011521 glass Substances 0.000 claims description 44
- 230000000712 assembly Effects 0.000 claims description 41
- 238000000429 assembly Methods 0.000 claims description 41
- 238000004804 winding Methods 0.000 claims description 20
- 238000005520 cutting process Methods 0.000 claims description 19
- 239000007787 solid Substances 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 239000006060 molten glass Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 230000006872 improvement Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000003746 solid phase reaction Methods 0.000 description 4
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- MVFCKEFYUDZOCX-UHFFFAOYSA-N iron(2+);dinitrate Chemical compound [Fe+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MVFCKEFYUDZOCX-UHFFFAOYSA-N 0.000 description 2
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 241000206607 Porphyra umbilicalis Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 1
- UOJMTSCORVQOHS-UHFFFAOYSA-N pachypodol Natural products COc1cc(ccc1O)C2=C(C)C(=O)c3c(O)cc(C)cc3O2 UOJMTSCORVQOHS-UHFFFAOYSA-N 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000011800 void material 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
- G11B5/187—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
- G11B5/232—Manufacture of gap
-
- 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
-
- 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
- Y10T29/49057—Using glass bonding material
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59005204A JPS60150215A (ja) | 1984-01-14 | 1984-01-14 | 複合型磁気ヘツド用コアの製造法 |
| JP59005203A JPH0740334B2 (ja) | 1984-01-14 | 1984-01-14 | 磁気ヘッド用コア製造用コア前駆体 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PH26884A true PH26884A (en) | 1992-11-16 |
Family
ID=26339107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PH31707A PH26884A (en) | 1984-01-14 | 1985-01-11 | Magnetic head core and process of manufacturing the same |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US4711018A (fr) |
| EP (1) | EP0149509B1 (fr) |
| DE (1) | DE3583619D1 (fr) |
| HK (1) | HK17892A (fr) |
| PH (1) | PH26884A (fr) |
| SG (1) | SG7492G (fr) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3602654C2 (de) * | 1985-01-30 | 1997-11-27 | Mitsubishi Electric Corp | Verfahren zur Bildung einer Verbund-Magnetkopf-Stuktur und Verbund-Magnetkopf-Struktur |
| KR900000627B1 (ko) * | 1985-03-22 | 1990-02-01 | 알프스 덴기 가부시기가이샤 | 복합형 자기헤드 및 그 제조방법 |
| DE3529623A1 (de) * | 1985-08-19 | 1987-02-19 | Grundig Emv | Verfahren zur gleichzeitigen herstellung zweier zugeordneter magnetkoepfe fuer videogeraete |
| JPH01251405A (ja) * | 1988-03-31 | 1989-10-06 | Ngk Insulators Ltd | 磁気ヘッド用コア |
| JPH02201714A (ja) * | 1989-01-31 | 1990-08-09 | Pioneer Electron Corp | 磁気ヘッド |
| US5245492A (en) * | 1989-11-28 | 1993-09-14 | Matsushita Electric Industrial Co., Ltd. | Magnetic head |
| US5224001A (en) * | 1989-11-29 | 1993-06-29 | Matsushita Electric Industrial Co., Ltd. | Magnetic head |
| DE4107868C2 (de) * | 1990-03-13 | 1996-01-25 | Canon Denshi Kk | Magnetkopf und Verfahren zu dessen Herstellung |
| US5309306A (en) * | 1991-06-10 | 1994-05-03 | Mitsubishi Denki Kabushiki Kaisha | Complex magnetic head |
| US5267392A (en) * | 1992-03-04 | 1993-12-07 | Ampex Systems Corporation | Method of manufacturing a laminated high frequency magnetic transducer |
| EP0571951B1 (fr) * | 1992-05-28 | 2000-05-03 | Minebea Co. Ltd. | Tête magnétique flottante |
| DE69314178T2 (de) * | 1992-07-17 | 1998-04-09 | Ampex Systems Corp | Zusammengesetzter metall- und ferritwandlerkopf und herstellungsverfahren dafür |
| JP2952455B2 (ja) * | 1992-10-30 | 1999-09-27 | ミネベア株式会社 | 浮動磁気ヘッド |
| DE69323480T2 (de) * | 1992-12-14 | 1999-06-24 | Minebea Co Ltd | Schwebender Magnetkopf |
| EP0743635B1 (fr) * | 1995-05-18 | 2001-08-29 | Matsushita Electric Industrial Co., Ltd. | Une tête magnétique, sa méthode de production, et appareil d'enregistrement/reproduction magnétique l'utilisant |
| EP0768640A3 (fr) * | 1995-10-13 | 1998-11-11 | Ampex Corporation | Tête magnétique à petit noyau à support latéral non magnétique |
| JPH10247309A (ja) * | 1997-03-05 | 1998-09-14 | Matsushita Electric Ind Co Ltd | 回転ヘッド装置の製造方法，磁気ヘッドユニットの製造方法，回転ヘッド装置および磁気ヘッドユニット |
| JP3524421B2 (ja) * | 1999-03-12 | 2004-05-10 | アルプス電気株式会社 | 磁気ヘッド |
| WO2000074040A1 (fr) * | 1999-05-27 | 2000-12-07 | Utm Systems Corp. | Tete de lecture a support magnetique fin |
| JP2002312907A (ja) * | 2001-04-13 | 2002-10-25 | Sony Corp | 磁気ヘッドおよびその製造方法 |
| US7199957B2 (en) * | 2004-03-30 | 2007-04-03 | Imation Corp. | Write head alignment for full amplitude time-based servo |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB116451A (en) * | 1917-11-03 | 1918-06-13 | Harold Joseph Charle Forrester | Improvements in Brushes. |
| FR2075466A5 (fr) * | 1970-01-29 | 1971-10-08 | Ibm | |
| JPS53123913A (en) * | 1977-04-05 | 1978-10-28 | Olympus Optical Co Ltd | Magnetic head and production of the same |
| JPS5690470A (en) * | 1979-12-05 | 1981-07-22 | Xerox Corp | Memory actuator |
| JPS57114899A (en) * | 1981-01-07 | 1982-07-16 | Tokyo Shibaura Electric Co | Method of processing metal sodium containing radioactive material |
| JPS57205817A (en) * | 1981-06-12 | 1982-12-17 | Sony Corp | Joining method of ferrite |
| JPS595417A (ja) * | 1982-07-01 | 1984-01-12 | Sharp Corp | 磁気ヘツドの製造方法 |
| US4611259A (en) * | 1983-02-08 | 1986-09-09 | Ampex Corporation | Magnetic transducer structure having reduced track width and a method of manufacturing thereof |
| JPS60150215A (ja) * | 1984-01-14 | 1985-08-07 | Ngk Insulators Ltd | 複合型磁気ヘツド用コアの製造法 |
| JPH0740334B2 (ja) * | 1984-01-14 | 1995-05-01 | 日本碍子株式会社 | 磁気ヘッド用コア製造用コア前駆体 |
-
1985
- 1985-01-02 DE DE8585300017T patent/DE3583619D1/de not_active Expired - Lifetime
- 1985-01-02 US US06/688,502 patent/US4711018A/en not_active Expired - Lifetime
- 1985-01-02 EP EP85300017A patent/EP0149509B1/fr not_active Expired - Lifetime
- 1985-01-11 PH PH31707A patent/PH26884A/en unknown
-
1987
- 1987-09-23 US US07/100,230 patent/US4839763A/en not_active Expired - Lifetime
-
1992
- 1992-01-25 SG SG74/92A patent/SG7492G/en unknown
- 1992-03-05 HK HK178/92A patent/HK17892A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| US4839763A (en) | 1989-06-13 |
| US4711018A (en) | 1987-12-08 |
| EP0149509B1 (fr) | 1991-07-31 |
| EP0149509A2 (fr) | 1985-07-24 |
| SG7492G (en) | 1992-03-20 |
| HK17892A (en) | 1992-03-13 |
| EP0149509A3 (en) | 1987-04-01 |
| DE3583619D1 (de) | 1991-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| PH26884A (en) | Magnetic head core and process of manufacturing the same | |
| US5020213A (en) | Method of producing a head core slider | |
| EP0361809B1 (fr) | Procédé de réalisation d'un glisseur de noyau de tête pour entraînement à disque magnétique rigide utilisant la gravure induite par laser | |
| US5012572A (en) | Method for producing a head core slider | |
| JPS6233642B2 (fr) | ||
| US4837922A (en) | Process for manufacturing a composite magnetic head structure | |
| US4953048A (en) | Magnetic head with specific gap structure | |
| US5537732A (en) | Method for manufacturing a magnetic head core slider | |
| KR910009025B1 (ko) | 복합형 자기 헤드용 코어의 제조법 | |
| JPH07220218A (ja) | 磁気ヘッドおよびその製造方法ならびに磁気記録再生装置 | |
| JP3311790B2 (ja) | 複合型磁気ヘッド用コアの製造方法 | |
| JPH0778863B2 (ja) | 固定磁気ディスク装置用コアスライダの製造法 | |
| JPH0740334B2 (ja) | 磁気ヘッド用コア製造用コア前駆体 | |
| JPS6222164B2 (fr) | ||
| JPS61216106A (ja) | 複合型磁気ヘツドおよびその製造方法 | |
| JPS6222214A (ja) | 複合型磁気ヘツドの製造方法 | |
| JPS6220113A (ja) | 複合型磁気ヘツドおよびその製造方法 | |
| JPS63113921A (ja) | 浮動式磁気ヘツドおよびその製造方法 | |
| JPS6222212A (ja) | 複合型磁気ヘツドおよびその製造方法 | |
| JPH01173304A (ja) | 磁気ヘッドの製造方法 | |
| JPS6248285B2 (fr) | ||
| JPS62232716A (ja) | 磁気ヘツドコアの製造方法 | |
| JPH0311002B2 (fr) | ||
| JPH02143904A (ja) | 複合磁気ヘッドとその製造方法 | |
| JPS61134910A (ja) | 磁気ヘツド製造法 |