GB1494840A - Method for producing multiple-track magnetic heads - Google Patents
Method for producing multiple-track magnetic headsInfo
- Publication number
- GB1494840A GB1494840A GB656175A GB656175A GB1494840A GB 1494840 A GB1494840 A GB 1494840A GB 656175 A GB656175 A GB 656175A GB 656175 A GB656175 A GB 656175A GB 1494840 A GB1494840 A GB 1494840A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- plates
- polepieces
- shield plate
- ferrite
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000011521 glass Substances 0.000 abstract 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 4
- 229910000859 α-Fe Inorganic materials 0.000 abstract 4
- 239000011248 coating agent Substances 0.000 abstract 3
- 238000000576 coating method Methods 0.000 abstract 3
- 239000000377 silicon dioxide Substances 0.000 abstract 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 2
- 239000011230 binding agent Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 230000002411 adverse Effects 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000003303 reheating Methods 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
- G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than one track
- G11B5/295—Manufacture
-
- 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
- G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than one track
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2158874A JPS50115811A (enrdf_load_stackoverflow) | 1974-02-23 | 1974-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1494840A true GB1494840A (en) | 1977-12-14 |
Family
ID=12059186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB656175A Expired GB1494840A (en) | 1974-02-23 | 1975-02-17 | Method for producing multiple-track magnetic heads |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS50115811A (enrdf_load_stackoverflow) |
| DE (1) | DE2507557C3 (enrdf_load_stackoverflow) |
| GB (1) | GB1494840A (enrdf_load_stackoverflow) |
| NL (1) | NL7502182A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2217508A (en) * | 1988-03-29 | 1989-10-25 | Hitachi Metals Ltd | Flying-type magnetic head |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4373173A (en) * | 1981-03-19 | 1983-02-08 | International Business Machines Corporation | Multi-element head assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5014904A (enrdf_load_stackoverflow) * | 1973-06-13 | 1975-02-17 |
-
1974
- 1974-02-23 JP JP2158874A patent/JPS50115811A/ja active Pending
-
1975
- 1975-02-17 GB GB656175A patent/GB1494840A/en not_active Expired
- 1975-02-21 DE DE19752507557 patent/DE2507557C3/de not_active Expired
- 1975-02-24 NL NL7502182A patent/NL7502182A/xx not_active Application Discontinuation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2217508A (en) * | 1988-03-29 | 1989-10-25 | Hitachi Metals Ltd | Flying-type magnetic head |
| US5016129A (en) * | 1988-03-29 | 1991-05-14 | Hitachi Metals, Ltd. | Flying-type composite magnetic head with appropriate bonding glasses and method of producing same |
| US5086553A (en) * | 1988-03-29 | 1992-02-11 | Hitachi Metals, Ltd. | Method of producing a fly-type composite magnetic head with appropriate bonding glasses |
| GB2217508B (en) * | 1988-03-29 | 1992-08-19 | Hitachi Metals Ltd | Flying-type magnetic head |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2507557B2 (de) | 1979-03-15 |
| NL7502182A (nl) | 1975-08-26 |
| JPS50115811A (enrdf_load_stackoverflow) | 1975-09-10 |
| DE2507557C3 (de) | 1979-11-22 |
| DE2507557A1 (de) | 1975-09-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19950216 |