JPS5665336A - Magnetic recording paper - Google Patents

Magnetic recording paper

Info

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
Application number
JP14048979A
Other languages
Japanese (ja)
Inventor
Yukihiro Yuyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP14048979A priority Critical patent/JPS5665336A/en
Publication of JPS5665336A publication Critical patent/JPS5665336A/en
Pending legal-status Critical Current

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
JP14048979A 1979-11-01 1979-11-01 Magnetic recording paper Pending JPS5665336A (en)

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)

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