GB1461979A - Magnetic tape cassette especially a compact cassette with screening shield - Google Patents
Magnetic tape cassette especially a compact cassette with screening shieldInfo
- Publication number
- GB1461979A GB1461979A GB1719374A GB1719374A GB1461979A GB 1461979 A GB1461979 A GB 1461979A GB 1719374 A GB1719374 A GB 1719374A GB 1719374 A GB1719374 A GB 1719374A GB 1461979 A GB1461979 A GB 1461979A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- strip
- shield
- magnetic tape
- annealed
- 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
- 238000012216 screening Methods 0.000 title abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
- G11B23/04—Magazines; Cassettes for webs or filaments
- G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
- G11B23/087—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using two different reels or cores
- G11B23/08707—Details
- G11B23/08792—Shielding devices
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
1461979 Making magnetic tape cassettes BASF AG 19 April 1974 [21 April 1973] 17193/74 Heading B3A [Also in Division B8] Arcuate lengths 5 are cut from an annealed coil 9 of magnetic strip in a manner such as to retain in the cut lengths the magnetic properties of the annealed coil, and each length inserted into a magnetic tape cassette to act as a screening shield. The exemplified strip is a magnetically soft alloy containing 36% nickel sold under the Registered Trade Mark "Mumetal". A cleaning station (not shown) for the strip may be positioned between coil 9 and cutter 10. The coil is annealed at 600 to 1100‹ C. and a strip of protective material may be interposed between the turns of the coil to prevent them fusing together. The shield of Fig. la has a radius of curvature of 15 to 30 cm., a width of 8 to 10 mm. a thickness 0À2 to 0À4 mm. and a length of 22 mm. The ends of shield 1, Fig. 1b are angled towards the centre of curvature.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732320439 DE2320439B2 (en) | 1973-04-21 | 1973-04-21 | MAGNETIC TAPE CASSETTE, IN PARTICULAR COMPACT CASSETTE, WITH SHIELD BAR AND METHOD FOR ITS MANUFACTURING |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1461979A true GB1461979A (en) | 1977-01-19 |
Family
ID=5878914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1719374A Expired GB1461979A (en) | 1973-04-21 | 1974-04-19 | Magnetic tape cassette especially a compact cassette with screening shield |
Country Status (8)
| Country | Link |
|---|---|
| JP (2) | JPS5651060A (en) |
| BE (1) | BE813978A (en) |
| BR (1) | BR7403156D0 (en) |
| DE (1) | DE2320439B2 (en) |
| FR (1) | FR2226721B1 (en) |
| GB (1) | GB1461979A (en) |
| IT (1) | IT1011251B (en) |
| NL (1) | NL176503C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2835459A1 (en) * | 1978-08-12 | 1980-02-28 | Vacuumschmelze Gmbh | SPRING SHIELDING ELEMENT, ESPECIALLY FOR MAGNETIC TAPE CASSETTES |
| JPS60199592A (en) * | 1984-03-23 | 1985-10-09 | Nomura Shoji:Kk | Hydraulic clamp for welding of pipes |
-
1973
- 1973-04-21 DE DE19732320439 patent/DE2320439B2/en active Granted
-
1974
- 1974-04-18 FR FR7413512A patent/FR2226721B1/fr not_active Expired
- 1974-04-19 BE BE143436A patent/BE813978A/en not_active IP Right Cessation
- 1974-04-19 GB GB1719374A patent/GB1461979A/en not_active Expired
- 1974-04-19 NL NL7405362A patent/NL176503C/en not_active IP Right Cessation
- 1974-04-19 BR BR315674A patent/BR7403156D0/en unknown
- 1974-04-19 IT IT5050274A patent/IT1011251B/en active
-
1980
- 1980-09-10 JP JP12472880A patent/JPS5651060A/en active Granted
-
1981
- 1981-01-26 JP JP913681A patent/JPS5758273A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| IT1011251B (en) | 1977-01-20 |
| FR2226721B1 (en) | 1978-03-24 |
| JPS5651060A (en) | 1981-05-08 |
| JPS5758273A (en) | 1982-04-07 |
| NL176503C (en) | 1985-04-16 |
| NL176503B (en) | 1984-11-16 |
| NL7405362A (en) | 1974-10-23 |
| JPS5751188B2 (en) | 1982-10-30 |
| DE2320439B2 (en) | 1977-02-10 |
| BR7403156D0 (en) | 1974-11-19 |
| FR2226721A1 (en) | 1974-11-15 |
| JPS5751189B2 (en) | 1982-10-30 |
| BE813978A (en) | 1974-10-21 |
| DE2320439A1 (en) | 1974-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS51138423A (en) | Standard magnetic tape cassette compressing container | |
| ZA807953B (en) | Cassette for a recording medium in strip or tape form,more particularly for a magnetic tape,and cassette housing and protective holder for a recording medium wound into at least one roll | |
| GB8300975D0 (en) | Magnetic tape cassette | |
| DE3571285D1 (en) | Tape guiding device for tape conveying devices, particularly magnetic tape devices, and tape cassettes provided therewith | |
| JPS52156608A (en) | Magnetic tape cassette | |
| FR2517861B1 (en) | MAGNETIC TAPE CASSETTE, ESPECIALLY FOR TELEPHONE | |
| GB2150916B (en) | Magnetic tape cassettes | |
| GB2072141B (en) | Magnetic tape cassette with tape pad | |
| HK102285A (en) | Magnetic tape cassette | |
| GB2104478B (en) | Magnetic tape cassettes | |
| GB2057395B (en) | Magnetic tape cassettes | |
| ZA833212B (en) | Magnetic tape cassette | |
| JPS57100664A (en) | Magnetic tape cassette | |
| IT8124392A0 (en) | IMPROVED MAGNETIC TAPE REEL. | |
| GB1461979A (en) | Magnetic tape cassette especially a compact cassette with screening shield | |
| GB2134077B (en) | Magnetic tape cassette including ceramic material | |
| DE3049750D2 (en) | Magnetic tape cassette | |
| GB2063819B (en) | Protection of magnetic tape in a cassette | |
| IT8148440A0 (en) | IMPROVEMENT IN MAGNETIC CLUTCHES PARTICULARLY FOR RECORDING TAPE WINDING OPERATORS AND SIMILAR | |
| HK55980A (en) | Magnetic tape cassette | |
| JPS57119342A (en) | Cassette having spool and fixed tape made of strip material | |
| GB2126561B (en) | Magnetic tape cassette casing | |
| IT8220473V0 (en) | CASSETTE FOR TAPE IN PARTICULAR CASSETTE FOR MAGNETIC TAPE. | |
| GB8520385D0 (en) | Magnetic tape cassettes | |
| JPS5593523A (en) | Multi-channel magnetic head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19940418 |