GB907955A - Magnetic recording head structure - Google Patents
Magnetic recording head structureInfo
- Publication number
- GB907955A GB907955A GB2003561A GB2003561A GB907955A GB 907955 A GB907955 A GB 907955A GB 2003561 A GB2003561 A GB 2003561A GB 2003561 A GB2003561 A GB 2003561A GB 907955 A GB907955 A GB 907955A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gaps
- thickness
- magnetic recording
- support
- 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.)
- Expired
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 4
- 238000004804 winding Methods 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 2
- 239000011521 glass Substances 0.000 abstract 2
- 229910000640 Fe alloy Inorganic materials 0.000 abstract 1
- 229910000990 Ni alloy Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229910003460 diamond Inorganic materials 0.000 abstract 1
- 239000010432 diamond Substances 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000000696 magnetic material Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
907,955. Magnetic recording &c. heads. SYLVANIA ELECTRIC PRODUCTS Inc. June 2, 1961 [June 24, 1960], No. 20035/61. Class 40 (2). [Also in Group XXII] A magnetic recording head is made by evaporating a layer of magnetic material on to a support and by then cutting an air gap. The support, preferably of glass tubing, is first masked into bands, where a stacked head is to be made, and a preliminary, tenacious coating of about 1 Á thickness of an iron-rich nickel/iron alloy deposited, followed by a layer of 10 to 25 Áthickness of a nickel-rich alloy. The region which will be away from the gap may also carry an additional thickness of alloy. The gaps are produced in line across all the component heads by a diamond cutter. It is found that the gap spacing is related to the deposited thickness so that gaps narrower than the thickness of the deposit may be produced by controlled electrolytic build-up. As an alternative, the gaps may be etched. Compared with conventional heads, the thin poles have low leakage inductance and low fringe fields. In Fig. 3, the support is in two parts; the bands 32 are continued diametrally inwardly on the curved member 30, which is clamped to a striped flat member 48, gapped at 56 to provide space for windings and inter-winding screens (not shown). In Fig. 4, a circular glass tube is provided with winding apertures 78 opposite the gaps 24.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3861360A | 1960-06-24 | 1960-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB907955A true GB907955A (en) | 1962-10-10 |
Family
ID=21900905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2003561A Expired GB907955A (en) | 1960-06-24 | 1961-06-02 | Magnetic recording head structure |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE604537A (en) |
| GB (1) | GB907955A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5026924B1 (en) * | 1965-12-06 | 1975-09-04 |
-
1961
- 1961-06-02 BE BE604537A patent/BE604537A/en unknown
- 1961-06-02 GB GB2003561A patent/GB907955A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5026924B1 (en) * | 1965-12-06 | 1975-09-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| BE604537A (en) | 1961-10-02 |
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