FR2284159A1 - Methode de fabrication de tetes magnetiques de lecture, d'ecriture et d'effacement pour memoires a support defilant, et tete obtenue par ladite methode - Google Patents
Methode de fabrication de tetes magnetiques de lecture, d'ecriture et d'effacement pour memoires a support defilant, et tete obtenue par ladite methodeInfo
- Publication number
- FR2284159A1 FR2284159A1 FR7430336A FR7430336A FR2284159A1 FR 2284159 A1 FR2284159 A1 FR 2284159A1 FR 7430336 A FR7430336 A FR 7430336A FR 7430336 A FR7430336 A FR 7430336A FR 2284159 A1 FR2284159 A1 FR 2284159A1
- Authority
- FR
- France
- Prior art keywords
- writing
- magnetic reading
- manufacturing magnetic
- head obtained
- erasing heads
- 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.)
- Granted
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
-
- 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)
Priority Applications (7)
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 |
US05/607,019 US4017966A (en) | 1974-09-06 | 1975-08-22 | Method of manufacturing a magnetic head having a relatively large air-gap and a good resistance to mechanical wear |
DE2539237A DE2539237C2 (de) | 1974-09-06 | 1975-09-03 | Verfahren zur Herstellung von magnetischen Lese-, Schreib- und Löschköpfen mit großer Spaltbreite für magnetische Informationsträger |
NLAANVRAGE7510386,A NL174773C (nl) | 1974-09-06 | 1975-09-03 | Werkwijze voor de vervaardiging van magneetkoppen voor lezen, schrijven en uitwissen van informatie op een voortbewegende drager. |
SE7509914A SE409521B (sv) | 1974-09-06 | 1975-09-05 | Forfarande for framstellning av ett magnethuvud |
GB36766/75A GB1512717A (en) | 1974-09-06 | 1975-09-05 | Method of manufacturing a magnetic head having a relatively large air-gap and a good resistance to mechanical wear |
JP50107926A JPS5153814A (fr) | 1974-09-06 | 1975-09-05 |
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 |
---|---|
FR2284159A1 true FR2284159A1 (fr) | 1976-04-02 |
FR2284159B1 FR2284159B1 (fr) | 1979-06-01 |
Family
ID=9142853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7430336A Granted 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 |
Country Status (7)
Country | Link |
---|---|
US (1) | US4017966A (fr) |
JP (1) | JPS5153814A (fr) |
DE (1) | DE2539237C2 (fr) |
FR (1) | FR2284159A1 (fr) |
GB (1) | GB1512717A (fr) |
NL (1) | NL174773C (fr) |
SE (1) | SE409521B (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2362465A1 (fr) * | 1976-08-16 | 1978-03-17 | Matsushita Electric Ind Co Ltd | Tete magnetique et procede pour sa fabrication |
JPS61133007A (ja) * | 1984-12-01 | 1986-06-20 | Victor Co Of Japan Ltd | 磁気ヘツド |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2097960A5 (fr) * | 1970-07-02 | 1972-03-03 | Ibm |
Family Cites Families (3)
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 |
-
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 GB GB36766/75A patent/GB1512717A/en not_active Expired
- 1975-09-05 SE SE7509914A patent/SE409521B/xx unknown
- 1975-09-05 JP JP50107926A patent/JPS5153814A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2097960A5 (fr) * | 1970-07-02 | 1972-03-03 | Ibm |
Also Published As
Publication number | Publication date |
---|---|
NL174773C (nl) | 1984-08-01 |
US4017966A (en) | 1977-04-19 |
SE409521B (sv) | 1979-08-20 |
SE7509914L (sv) | 1976-03-08 |
DE2539237C2 (de) | 1981-09-17 |
JPS5153814A (fr) | 1976-05-12 |
NL174773B (nl) | 1984-03-01 |
GB1512717A (en) | 1978-06-01 |
FR2284159B1 (fr) | 1979-06-01 |
NL7510386A (nl) | 1976-03-09 |
DE2539237A1 (de) | 1976-03-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |