FR2485238B1 - - Google Patents
Info
- Publication number
- FR2485238B1 FR2485238B1 FR8111826A FR8111826A FR2485238B1 FR 2485238 B1 FR2485238 B1 FR 2485238B1 FR 8111826 A FR8111826 A FR 8111826A FR 8111826 A FR8111826 A FR 8111826A FR 2485238 B1 FR2485238 B1 FR 2485238B1
- Authority
- FR
- France
- 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
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
-
- 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
- Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
- Y10T29/49039—Fabricating head structure or component thereof including measuring or testing with dual gap materials
-
- 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)
- Glass Compositions (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8003518A NL8003518A (nl) | 1980-06-18 | 1980-06-18 | Magneetkop, werkwijze voor het vervaardigen van een magneetkop. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2485238A1 FR2485238A1 (fr) | 1981-12-24 |
| FR2485238B1 true FR2485238B1 (US20100268047A1-20101021-C00003.png) | 1984-12-14 |
Family
ID=19835479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8111826A Granted FR2485238A1 (fr) | 1980-06-18 | 1981-06-16 | Tete magnetique et son procede de fabrication |
Country Status (8)
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8202059A (nl) * | 1982-05-19 | 1983-12-16 | Philips Nv | Glas gekitte magneetkop en werkwijze voor zijn vervaardiging. |
| US4544974A (en) * | 1983-10-20 | 1985-10-01 | Eastman Kodak Company | Alumina glass composition and magnetic head incorporating same |
| US4819113A (en) * | 1984-03-29 | 1989-04-04 | Sony Corporation | Magnetic transducer head with inclined magnetic gap |
| JPS60226455A (ja) * | 1984-04-19 | 1985-11-11 | 日立金属株式会社 | 磁気ヘツド用非磁性セラミツクス |
| JPS6184891A (ja) * | 1984-10-02 | 1986-04-30 | Toshiba Corp | 半導体レ−ザ素子 |
| JPH0654527B2 (ja) * | 1984-11-26 | 1994-07-20 | ソニー株式会社 | 磁気ヘツド |
| EP0191447B1 (en) * | 1985-02-15 | 1992-05-13 | Matsushita Electric Industrial Co., Ltd. | Magnetic head |
| JPS61214110A (ja) * | 1985-03-20 | 1986-09-24 | Hitachi Maxell Ltd | 磁気ヘツド |
| US4828966A (en) * | 1987-12-04 | 1989-05-09 | Digital Equipment Corporation | Method for producing hall effect sensor for magnetic recording head |
| US5211734A (en) * | 1989-03-31 | 1993-05-18 | Tdk Corporation | Method for making a magnetic head having surface-reinforced glass |
| US5055957A (en) * | 1989-06-19 | 1991-10-08 | International Business Machines Corporation | Method of making low wear glass for magnetic heads |
| JPH0528413U (ja) * | 1991-09-26 | 1993-04-16 | 帝国ピストンリング株式会社 | 電子除湿器 |
| JPH0644516A (ja) * | 1992-07-24 | 1994-02-18 | Matsushita Electric Ind Co Ltd | 磁気ヘッド |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3249700A (en) * | 1960-09-27 | 1966-05-03 | Philips Corp | Magnetic heads with means for preventing side erosion |
| NL123062C (US20100268047A1-20101021-C00003.png) * | 1962-05-04 | |||
| US3275358A (en) * | 1963-03-14 | 1966-09-27 | Gen Electric | Glass-to-metal and glass-to-ceramic seals |
| US3458926A (en) * | 1965-10-08 | 1969-08-05 | Ibm | Method of forming a glass filled gap |
| US3721000A (en) * | 1968-03-15 | 1973-03-20 | Sony Corp | Method of making a magnetic head |
| US3544982A (en) * | 1968-05-01 | 1970-12-01 | Rca Corp | Multi-head magnetic transducer |
| US3912483A (en) * | 1968-09-25 | 1975-10-14 | Matsushita Electric Ind Co Ltd | Method of making a magnetic head |
| US3605258A (en) * | 1968-11-21 | 1971-09-20 | Ferroxcube Corp | Fabrication of recording heads |
| US3624897A (en) * | 1969-07-25 | 1971-12-07 | Bell & Howell Co | Method of making a ferrite head |
| US3795954A (en) * | 1971-11-26 | 1974-03-12 | Honeywell Inf Systems | Method of making a micro-gap magnetic recording head |
| US3781486A (en) * | 1972-04-26 | 1973-12-25 | Avco Corp | Magnetic head transducer |
| US3778896A (en) * | 1972-05-05 | 1973-12-18 | Bell & Howell Co | Bonding an insulator to an inorganic member |
| US3751803A (en) * | 1972-05-16 | 1973-08-14 | Ferroxcube Corp | Method of making a magnetic head |
| US4172318A (en) * | 1977-08-17 | 1979-10-30 | Huntt Robert L | Method of joining manganese zinc ferrite pole pieces |
| JPS5827565B2 (ja) * | 1977-09-19 | 1983-06-10 | 松下電器産業株式会社 | 磁気ヘッドおよびその製造方法 |
| US4217613A (en) * | 1978-11-06 | 1980-08-12 | Rca Corporation | Magnetic transducer head core |
-
1980
- 1980-06-18 NL NL8003518A patent/NL8003518A/nl not_active Application Discontinuation
- 1980-10-24 US US06/200,112 patent/US4392167A/en not_active Expired - Lifetime
-
1981
- 1981-06-13 DE DE19813123574 patent/DE3123574A1/de not_active Ceased
- 1981-06-15 GB GB8118373A patent/GB2079515B/en not_active Expired
- 1981-06-15 AT AT0266381A patent/AT371264B/de not_active IP Right Cessation
- 1981-06-15 JP JP9101181A patent/JPS5727417A/ja active Granted
- 1981-06-16 FR FR8111826A patent/FR2485238A1/fr active Granted
-
1984
- 1984-12-19 HK HK984/84A patent/HK98484A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US4392167A (en) | 1983-07-05 |
| JPH0258684B2 (US20100268047A1-20101021-C00003.png) | 1990-12-10 |
| NL8003518A (nl) | 1982-01-18 |
| AT371264B (de) | 1983-06-10 |
| GB2079515B (en) | 1984-09-12 |
| HK98484A (en) | 1984-12-28 |
| ATA266381A (de) | 1982-10-15 |
| GB2079515A (en) | 1982-01-20 |
| JPS5727417A (en) | 1982-02-13 |
| DE3123574A1 (de) | 1982-06-03 |
| FR2485238A1 (fr) | 1981-12-24 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |