JPS5555433A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS5555433A JPS5555433A JP12815078A JP12815078A JPS5555433A JP S5555433 A JPS5555433 A JP S5555433A JP 12815078 A JP12815078 A JP 12815078A JP 12815078 A JP12815078 A JP 12815078A JP S5555433 A JPS5555433 A JP S5555433A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic layer
- support material
- layer
- paint
- carbon black
- 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.)
- Pending
Links
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE: To improve adhesion between a support material and a magnetic layer to reduce charging of the magnetic layer by providing a layer, where polyvinyl formal is main components and a specific carbon black is included, between the polyester support material and the magnetic layer.
CONSTITUTION: On a support material such as polyethylene terephthalate, the carbon black of a surface area over 700m2/g, an oil absorption quantity over 300ml (DBP)/100g and a particle diameter below 30mμ and polyvinyl formal are dispersed in cyclohexanon, etc., in a proportion of 5:95W30:70 in respect to the weight part, thereby producing a paint. This paint is applied to the support material and is dried to form a conductive substance layer. Next, a magnetic layer is provided on this layer. As a result, the surface resistance of the magnetic layer is small, and charging is reduced, and noise, drop-out, etc., can be prevented. Further, adhesion between the support material and the magnetic layer is improved to prevent exfoliation.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12815078A JPS5555433A (en) | 1978-10-17 | 1978-10-17 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12815078A JPS5555433A (en) | 1978-10-17 | 1978-10-17 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5555433A true JPS5555433A (en) | 1980-04-23 |
Family
ID=14977615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12815078A Pending JPS5555433A (en) | 1978-10-17 | 1978-10-17 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5555433A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5928227A (en) * | 1982-08-09 | 1984-02-14 | Victor Co Of Japan Ltd | Magnetic recording medium |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS487447A (en) * | 1971-06-08 | 1973-01-30 | ||
JPS5125322A (en) * | 1974-08-23 | 1976-03-01 | Uotaman Kk | Hedorochino jibankairyokoho |
JPS5125323A (en) * | 1974-08-26 | 1976-03-01 | Komatsu Mfg Co Ltd | Kansuishinkoho niokeru shiiruzaichunyuho |
-
1978
- 1978-10-17 JP JP12815078A patent/JPS5555433A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS487447A (en) * | 1971-06-08 | 1973-01-30 | ||
JPS5125322A (en) * | 1974-08-23 | 1976-03-01 | Uotaman Kk | Hedorochino jibankairyokoho |
JPS5125323A (en) * | 1974-08-26 | 1976-03-01 | Komatsu Mfg Co Ltd | Kansuishinkoho niokeru shiiruzaichunyuho |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5928227A (en) * | 1982-08-09 | 1984-02-14 | Victor Co Of Japan Ltd | Magnetic recording medium |
JPH0332127B2 (en) * | 1982-08-09 | 1991-05-10 | Victor Company Of Japan |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5675659A (en) | Carrier material | |
JPS5555431A (en) | Magnetic recording medium | |
JPS5555433A (en) | Magnetic recording medium | |
JPS5555438A (en) | Magnetic recording medium | |
JPS5555432A (en) | Magnetic recording medium | |
JPS5461239A (en) | Electric wave absorbing coating composition | |
JPS5538671A (en) | Magnetic recording medium | |
JPS5555434A (en) | Magnetic recording medium | |
JPS5586790A (en) | Conductive recording material | |
JPS5553592A (en) | Recording material | |
JPS5588074A (en) | Conductive toner for electrostatic printing | |
JPS5651027A (en) | Magnetic recording medium | |
JPS5555436A (en) | Magnetic recording medium | |
JPS5584040A (en) | Magnetic recording medium | |
JPS55125538A (en) | Magnetic recording medium | |
JPS5496034A (en) | Electrophotographic toner | |
JPS5555435A (en) | Magnetic recording medium | |
JPS5528506A (en) | Magnetic recording medium | |
JPS5595594A (en) | Conductive recording material | |
JPS5555437A (en) | Magnetic recording medium | |
JPS5619526A (en) | Magnetic disc | |
JPS5582172A (en) | Resistance paint composed of carbon and resin | |
JPS5577035A (en) | Production of magnetic recording medium | |
JPS5262030A (en) | Electrosensitive recording means | |
JPS5517853A (en) | Magnetresistance effect head |