FR1567488A - - Google Patents
Info
- Publication number
- FR1567488A FR1567488A FR1567488DA FR1567488A FR 1567488 A FR1567488 A FR 1567488A FR 1567488D A FR1567488D A FR 1567488DA FR 1567488 A FR1567488 A FR 1567488A
- 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
- G11B5/133—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
- G11B5/133—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
- Y10T29/49036—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)
- Magnetic Heads (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US64144367A | 1967-05-23 | 1967-05-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1567488A true FR1567488A (fr) | 1969-05-16 |
Family
ID=24572404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1567488D Expired FR1567488A (fr) | 1967-05-23 | 1968-05-22 |
Country Status (7)
Country | Link |
---|---|
US (1) | US3479738A (fr) |
AT (1) | AT295878B (fr) |
CH (1) | CH491461A (fr) |
DE (1) | DE1774321C3 (fr) |
FR (1) | FR1567488A (fr) |
GB (1) | GB1226598A (fr) |
NL (1) | NL6807257A (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1799008B1 (de) * | 1967-02-14 | 1976-12-16 | Matsushita Electric Ind Co Ltd | Gesintertes ferrit und verfahren zu seiner herstellung |
US3634933A (en) * | 1968-05-01 | 1972-01-18 | Rca Corp | Magnetic head method |
US3639701A (en) * | 1970-07-02 | 1972-02-01 | Ibm | Magnetic recording head having a nonmagnetic ferrite gap |
US3706132A (en) * | 1970-11-19 | 1972-12-19 | Rca Corp | Magnetic transducer fabrication technique |
US3810245A (en) * | 1971-06-28 | 1974-05-07 | Sony Corp | Single crystal ferrite magnetic head |
JPS5534485B2 (fr) * | 1972-01-31 | 1980-09-06 | ||
US3778896A (en) * | 1972-05-05 | 1973-12-18 | Bell & Howell Co | Bonding an insulator to an inorganic member |
US3886025A (en) * | 1972-08-24 | 1975-05-27 | Ibm | Ferrite head |
US3940798A (en) * | 1974-09-30 | 1976-02-24 | Rumpler Allen G | Core structure with L-shaped back member and magnetic bonding material |
JPS5312740A (en) * | 1976-07-23 | 1978-02-04 | Matsushita Electric Ind Co Ltd | Liquid for electrolytically etching ferrite |
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 |
US4298899A (en) * | 1979-12-17 | 1981-11-03 | International Business Machines Corporation | Magnetic head assembly with ferrite core |
JPS60138708A (ja) * | 1983-12-27 | 1985-07-23 | Ngk Insulators Ltd | 磁気ヘッド用コアの製造法 |
JPS61133007A (ja) * | 1984-12-01 | 1986-06-20 | Victor Co Of Japan Ltd | 磁気ヘツド |
US4799119A (en) * | 1986-09-10 | 1989-01-17 | International Business Machines Corporation | Flexible circuit magnetic core winding for a core member |
JPS63211110A (ja) * | 1987-02-27 | 1988-09-02 | Pioneer Electronic Corp | 磁気ヘツドの製造方法 |
JPS63257904A (ja) * | 1987-04-15 | 1988-10-25 | Pioneer Electronic Corp | 磁気ヘツドの製造方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3094772A (en) * | 1956-07-26 | 1963-06-25 | Philips Corp | Method of producing magnetic heads with accurately predetermined gap heights |
US3098126A (en) * | 1960-01-11 | 1963-07-16 | Minnesota Mining & Mfg | Magnetic transducer device |
US3239322A (en) * | 1961-05-24 | 1966-03-08 | Gen Electric | Process for sealing vacuum-tight spinel bodies |
US3325266A (en) * | 1966-04-14 | 1967-06-13 | Corning Glass Works | Method of producing composite semicrystalline articles |
-
1967
- 1967-05-23 US US641443A patent/US3479738A/en not_active Expired - Lifetime
-
1968
- 1968-05-22 NL NL6807257A patent/NL6807257A/xx unknown
- 1968-05-22 FR FR1567488D patent/FR1567488A/fr not_active Expired
- 1968-05-22 DE DE1774321A patent/DE1774321C3/de not_active Expired
- 1968-05-22 CH CH762268A patent/CH491461A/de not_active IP Right Cessation
- 1968-05-23 GB GB1226598D patent/GB1226598A/en not_active Expired
- 1968-05-24 AT AT500968A patent/AT295878B/de active
Also Published As
Publication number | Publication date |
---|---|
NL6807257A (fr) | 1968-11-25 |
DE1774321B2 (de) | 1974-05-30 |
CH491461A (de) | 1970-05-31 |
DE1774321A1 (de) | 1972-01-27 |
DE1774321C3 (de) | 1975-02-20 |
GB1226598A (fr) | 1971-03-31 |
AT295878B (de) | 1972-01-25 |
US3479738A (en) | 1969-11-25 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |