JPS5665336A - Magnetic recording paper - Google Patents
Magnetic recording paperInfo
- Publication number
- JPS5665336A JPS5665336A JP14048979A JP14048979A JPS5665336A JP S5665336 A JPS5665336 A JP S5665336A JP 14048979 A JP14048979 A JP 14048979A JP 14048979 A JP14048979 A JP 14048979A JP S5665336 A JPS5665336 A JP S5665336A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- magnetic
- dried
- binding agent
- grain size
- 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 increase a recording and reproducing output and also to reduce its fluctuations by forming a magnetic recording layer uniformly by providing an intermediate layer, obtained by dispersing an inorganic filler of a specific grain size in a binding agent, between a base and magnetic recording layer.
CONSTITUTION: A coating, obtained by mixing and dispersing an inorganic filler, such as silica and alumina, of 5μm in mean grain size and 1W10μm in grain size range in a binding agent, such as polyvinyl alcohol and styrene-butadiene rubber latex, in 10:2W6 weight ratio is applied to base paper and dried and an intermediate layer of about 200W1,000sec in surface smoothness is formed by a calender. The amount of the dried and stuck coating should be about 2W4g/m2. Next, a magnetic coating of magnetic powder such as γ-Fe2O3 and a binding agent is applied on the intermediate layer to 20g/m2 in dry weight and, after being dried, processed by the calender to a surface smoothness of 200W300sec. Thus, the surface unevenness of the base paper is prevented from causing the coating unevenness of the magnetic layer direct to obtain superior recording paper.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14048979A JPS5665336A (en) | 1979-11-01 | 1979-11-01 | Magnetic recording paper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14048979A JPS5665336A (en) | 1979-11-01 | 1979-11-01 | Magnetic recording paper |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5665336A true JPS5665336A (en) | 1981-06-03 |
Family
ID=15269796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14048979A Pending JPS5665336A (en) | 1979-11-01 | 1979-11-01 | Magnetic recording paper |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5665336A (en) |
-
1979
- 1979-11-01 JP JP14048979A patent/JPS5665336A/en active Pending
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