DE2036754C3 - Abschirmung des Kopfspiegels in Magnetbandkassetten - Google Patents
Abschirmung des Kopfspiegels in MagnetbandkassettenInfo
- Publication number
- DE2036754C3 DE2036754C3 DE2036754A DE2036754A DE2036754C3 DE 2036754 C3 DE2036754 C3 DE 2036754C3 DE 2036754 A DE2036754 A DE 2036754A DE 2036754 A DE2036754 A DE 2036754A DE 2036754 C3 DE2036754 C3 DE 2036754C3
- Authority
- DE
- Germany
- Prior art keywords
- magnetic tape
- tape cassette
- cassette according
- shielding
- recess
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 210000003128 head Anatomy 0.000 description 27
- 230000000694 effects Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910000595 mu-metal Inorganic materials 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 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
- G11B5/10—Structure or manufacture of housings or shields for heads
- G11B5/11—Shielding of head against electric or magnetic fields
-
- 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
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Magnetic Heads (AREA)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2036754A DE2036754C3 (de) | 1970-07-24 | 1970-07-24 | Abschirmung des Kopfspiegels in Magnetbandkassetten |
| CH584771A CH533885A (de) | 1970-07-24 | 1971-04-22 | Abschirmkörper in einer Tonbandkassette für den Tonkopfspiegel |
| BE769483A BE769483A (nl) | 1970-07-24 | 1971-07-05 | Afscherming voor de kopspiegel in cassetten voor magneetband |
| NL7109342A NL7109342A (OSRAM) | 1970-07-24 | 1971-07-06 | |
| CA118,296A CA984966A (en) | 1970-07-24 | 1971-07-15 | Shielding device for magnetic tape cassettes |
| GB3352671A GB1330928A (en) | 1970-07-24 | 1971-07-16 | Magnetic tape cassette |
| US00163605A US3789157A (en) | 1970-07-24 | 1971-07-19 | Shielding device for overlapping the front face of a magnetic head in magnetic tape cartridges of the compact cassette type |
| FR7127098A FR2103288A5 (OSRAM) | 1970-07-24 | 1971-07-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2036754A DE2036754C3 (de) | 1970-07-24 | 1970-07-24 | Abschirmung des Kopfspiegels in Magnetbandkassetten |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2036754A1 DE2036754A1 (de) | 1972-01-27 |
| DE2036754B2 DE2036754B2 (de) | 1974-10-24 |
| DE2036754C3 true DE2036754C3 (de) | 1975-06-12 |
Family
ID=5777744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2036754A Expired DE2036754C3 (de) | 1970-07-24 | 1970-07-24 | Abschirmung des Kopfspiegels in Magnetbandkassetten |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3789157A (OSRAM) |
| BE (1) | BE769483A (OSRAM) |
| CA (1) | CA984966A (OSRAM) |
| CH (1) | CH533885A (OSRAM) |
| DE (1) | DE2036754C3 (OSRAM) |
| FR (1) | FR2103288A5 (OSRAM) |
| GB (1) | GB1330928A (OSRAM) |
| NL (1) | NL7109342A (OSRAM) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4271441A (en) | 1978-08-12 | 1981-06-02 | Vacuumschmelze Gmbh | Integral shield and bias element for magnetic tape cassettes |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4011593A (en) * | 1973-04-21 | 1977-03-08 | Basf Aktiengesellschaft | Magnetic tape cassette with screening shield |
| US4257077A (en) * | 1978-04-01 | 1981-03-17 | Tdk Electronics Co., Ltd. | Pressure pad and shielding plate for a tape cassette |
| JPS5731414Y2 (OSRAM) * | 1978-06-20 | 1982-07-09 | ||
| NL7809966A (nl) * | 1978-10-03 | 1978-12-29 | Philips Nv | Magneetbandcassette voorzien van veerelement met zacht- magnetische eigenschappen. |
| US4300180A (en) * | 1979-12-27 | 1981-11-10 | Allied Chemical Corporation | Amorphous spring-shield for tape cassette |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3126162A (en) * | 1958-12-24 | 1964-03-24 | figures |
-
1970
- 1970-07-24 DE DE2036754A patent/DE2036754C3/de not_active Expired
-
1971
- 1971-04-22 CH CH584771A patent/CH533885A/de not_active IP Right Cessation
- 1971-07-05 BE BE769483A patent/BE769483A/nl unknown
- 1971-07-06 NL NL7109342A patent/NL7109342A/xx unknown
- 1971-07-15 CA CA118,296A patent/CA984966A/en not_active Expired
- 1971-07-16 GB GB3352671A patent/GB1330928A/en not_active Expired
- 1971-07-19 US US00163605A patent/US3789157A/en not_active Expired - Lifetime
- 1971-07-23 FR FR7127098A patent/FR2103288A5/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4271441A (en) | 1978-08-12 | 1981-06-02 | Vacuumschmelze Gmbh | Integral shield and bias element for magnetic tape cassettes |
Also Published As
| Publication number | Publication date |
|---|---|
| US3789157A (en) | 1974-01-29 |
| BE769483A (nl) | 1972-01-05 |
| NL7109342A (OSRAM) | 1971-12-27 |
| CH533885A (de) | 1973-02-15 |
| CA984966A (en) | 1976-03-02 |
| FR2103288A5 (OSRAM) | 1972-04-07 |
| GB1330928A (en) | 1973-09-19 |
| DE2036754B2 (de) | 1974-10-24 |
| DE2036754A1 (de) | 1972-01-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| E77 | Valid patent as to the heymanns-index 1977 | ||
| 8320 | Willingness to grant licences declared (paragraph 23) | ||
| 8339 | Ceased/non-payment of the annual fee |