SU568401A3 - Magnetic tape base - Google Patents
Magnetic tape baseInfo
- Publication number
- SU568401A3 SU568401A3 SU7201799316A SU1799316A SU568401A3 SU 568401 A3 SU568401 A3 SU 568401A3 SU 7201799316 A SU7201799316 A SU 7201799316A SU 1799316 A SU1799316 A SU 1799316A SU 568401 A3 SU568401 A3 SU 568401A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- magnetic
- magnetic tape
- layer
- polycarbonate
- polyethylene
- Prior art date
Links
- -1 polyethylene terephthalate Polymers 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- 229920000515 polycarbonate Polymers 0.000 claims description 6
- 239000004417 polycarbonate Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000208202 Linaceae Species 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 210000004268 dentin Anatomy 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 229910000679 solder Inorganic materials 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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/739—Magnetic recording media substrates
- G11B5/73923—Organic polymer substrates
- G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
- G11B5/73931—Two or more layers, at least one layer being polyester
Landscapes
- Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
- Laminated Bodies (AREA)
Description
1one
Изобретэине относитс к области магнитной записи, а именно к основам магнитной лепты.Inventive refers to the field of magnetic recording, namely to the basics of a magnetic mite.
Известка основа магнитной ленты, содержаща немагнитный слой, состо щий полностью из полиэтилентерефтапата, и магнитный рабочий слой. Известна основа магнитной денты не обладает достаточной устойчивостью к износу, что приводит к выкрашиванию из ее поверхности мелких частиц, вызывающих в процесса магнитной записи и воспроизведени специфичные помехи.Lime is the base of a magnetic tape containing a non-magnetic layer consisting entirely of polyethylene terephthalate and a magnetic working layer. The known basis of magnetic dentine is not sufficiently resistant to wear, which leads to chipping of fine particles from its surface, causing specific disturbances in the magnetic recording and reproducing process.
Цепь изобретени - повыщение износоустойчивости„ Дл этого в основу магнитной ленты введен дополнительный немагнитный слой, состо щий из нолизтиленте- рефтапата. в котором, распределены, но крайней мере, 1-6 вес. % нерастворимых дискретных частиц поликарбоната и 1 - 6 вес.% нерастворимых дискретных частиц полиэтилена , причем весовое соотношение поликарбоната и полиэтилена находитс в пределах от 2:1 до 1:2, а шероховатость поверхности дополнительного немагнитного сло не превышает 0,25 мк.The circuit of the invention is increased wear resistance. For this purpose, an additional non-magnetic layer consisting of nolysistiltreftapat is introduced into the base of the magnetic tape. in which, are distributed, but at least 1-6 weight. % of insoluble discrete particles of polycarbonate and 1 - 6% by weight of insoluble discrete particles of polyethylene, with the weight ratio of polycarbonate and polyethylene ranging from 2: 1 to 1: 2, and the surface roughness of the additional nonmagnetic layer does not exceed 0.25 microns.
Предлагаема основа магнитной лент:,,; содержит немагнитный спой, состо щий полностью из полиэтилентерефталата без каких- либо примесей. Это обеспечивает получение его поверхности с очень малой ;-- роховатостью. Поверхность этого немагн-: г ного сло сопр жена с магнитным рабсчичг слоем, представл ющим, собой дисперсию магнитных частиц в св зующем веществе. Предлагаема основа магнитной ленты содержит также дополнительный ,немагнитнь;:; слой, сопр женный с первым, не магнитны, N; слоем. Дополнительный нем,агнитный слой состоит из полиэтилентерефтапата, в котором распределены, по крайней мере, 1-6 вес. % нерастворимых частиц поликарбоната и 1 - 6 вес.% нерастворимых дискретных частиц полиэтилена. При этом весовое соотнощение поликарбоната и полиэтилена находитс в пределах от 2 : 1 до 1 : 2. Шероховатость внешней поверхности дополнительного немагнитного сло , не сопр женной с первым нем,агнитным слоем, не превышаетс 0,25 мк.The proposed basis of magnetic tape: ,,; contains a non-magnetic solder consisting entirely of polyethylene terephthalate without any impurities. This ensures that its surface is obtained with a very small; - rooting. The surface of this non-magnetic: layer is coupled with a magnetic working layer, which is the dispersion of magnetic particles in the binder. The proposed magnetic tape base also contains an additional, non-magnetic; the layer conjugated with the first is not magnetic, N; by layer. An additional agnitic layer consists of polyethylene terephthalate, in which at least 1–6 wt. % insoluble polycarbonate particles and 1 - 6 wt.% insoluble discrete particles of polyethylene. The weight ratio of polycarbonate and polyethylene is in the range from 2: 1 to 1: 2. The roughness of the outer surface of the additional non-magnetic layer that is not conjugated to the first magnetic layer does not exceed 0.25 microns.
Предлагаема основа магнитной лен-иThe proposed basis of magnetic flax and
обладает повышенной устойчивостью к износу , что в значительной степени сокращает в процессе записи и воспроизведени выкрашивание частиц из ее новерхности.has a high resistance to wear, which significantly reduces the chipping of particles from its surface in the process of recording and reproducing.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15535371A | 1971-06-21 | 1971-06-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU568401A3 true SU568401A3 (en) | 1977-08-05 |
Family
ID=22555101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU7201799316A SU568401A3 (en) | 1971-06-21 | 1972-06-20 | Magnetic tape base |
Country Status (3)
| Country | Link |
|---|---|
| BR (1) | BR7204004D0 (en) |
| GB (1) | GB1375670A (en) |
| SU (1) | SU568401A3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1199982B (en) * | 1982-03-26 | 1989-01-05 | Anic Spa | POLYCARBONATE-BASED THERMOPLASTIC POLYMERIC ALLOY |
-
1972
- 1972-06-20 BR BR4004/72A patent/BR7204004D0/en unknown
- 1972-06-20 SU SU7201799316A patent/SU568401A3/en active
- 1972-06-20 GB GB212474A patent/GB1375670A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1375670A (en) | 1974-11-27 |
| BR7204004D0 (en) | 1973-06-14 |
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