FR2123450B1 - - Google Patents
Info
- Publication number
- FR2123450B1 FR2123450B1 FR7202612A FR7202612A FR2123450B1 FR 2123450 B1 FR2123450 B1 FR 2123450B1 FR 7202612 A FR7202612 A FR 7202612A FR 7202612 A FR7202612 A FR 7202612A FR 2123450 B1 FR2123450 B1 FR 2123450B1
- 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
- G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
-
- 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB322371 | 1971-01-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2123450A1 FR2123450A1 (enExample) | 1972-09-08 |
| FR2123450B1 true FR2123450B1 (enExample) | 1975-02-14 |
Family
ID=9754295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7202612A Expired FR2123450B1 (enExample) | 1971-01-26 | 1972-01-26 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3798758A (enExample) |
| JP (1) | JPS5414490B1 (enExample) |
| FR (1) | FR2123450B1 (enExample) |
| GB (1) | GB1340422A (enExample) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6074106A (ja) * | 1983-09-30 | 1985-04-26 | Victor Co Of Japan Ltd | 磁気ヘツド |
| JPH06101091B2 (ja) * | 1988-05-17 | 1994-12-12 | 日本碍子株式会社 | 磁気ヘッド用コア |
| JP2000231704A (ja) * | 1999-02-09 | 2000-08-22 | Mitsumi Electric Co Ltd | 磁気カード用マルチ磁気ヘッド |
| WO2020096054A1 (ja) | 2018-11-08 | 2020-05-14 | ヴァレオカペックジャパン株式会社 | トルクコンバータのロックアップ装置 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3369292A (en) * | 1962-11-23 | 1968-02-20 | North American Phillips Compan | Method of forming glass bonded heads |
| US3514851A (en) * | 1967-04-03 | 1970-06-02 | Control Data Corp | Method of manufacturing a magnetic head structure |
| NL162495C (nl) * | 1969-03-10 | Matsushita Electric Industrial Co Ltd | Meerkanaals magneetkop. |
-
1971
- 1971-01-26 GB GB322371A patent/GB1340422A/en not_active Expired
- 1971-11-17 US US00199547A patent/US3798758A/en not_active Expired - Lifetime
-
1972
- 1972-01-12 JP JP529872A patent/JPS5414490B1/ja active Pending
- 1972-01-26 FR FR7202612A patent/FR2123450B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1340422A (en) | 1973-12-12 |
| JPS5414490B1 (enExample) | 1979-06-07 |
| US3798758A (en) | 1974-03-26 |
| FR2123450A1 (enExample) | 1972-09-08 |