JPS5514561A - Magnetic recording media - Google Patents

Magnetic recording media

Info

Publication number
JPS5514561A
JPS5514561A JP8722478A JP8722478A JPS5514561A JP S5514561 A JPS5514561 A JP S5514561A JP 8722478 A JP8722478 A JP 8722478A JP 8722478 A JP8722478 A JP 8722478A JP S5514561 A JPS5514561 A JP S5514561A
Authority
JP
Japan
Prior art keywords
polystyrene pigment
magnetic recording
recording media
proof
thick
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
JP8722478A
Other languages
Japanese (ja)
Inventor
Keiichi Maruta
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 JP8722478A priority Critical patent/JPS5514561A/en
Publication of JPS5514561A publication Critical patent/JPS5514561A/en
Pending legal-status Critical Current

Links

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To increase the performance for water-proof and wear-proof of the magnetic layer, by forming the thin layer of polystyrene pigment on the surface of the magnetic layer taking aqueous organic macromolecular compound as bonding agent.
CONSTITUTION: As an bonding agent, to aqueous emulsion of aqueous organic macromolecular compound, polystyrene pigment of 0.15 to 0.3 wt. to the solid emulsion 1 wt., γ-Fe2O3 3wt. and water 10 wt. are mixed. The dispersion liquid like this is coated and dried on the plyester film about 25 μm thick. The polystyrene pigment is floated on the surface of the coating film between coating and drying to form the layer of polystyrene pigment 1 to 5 μ thick after drying.
COPYRIGHT: (C)1980,JPO&Japio
JP8722478A 1978-07-19 1978-07-19 Magnetic recording media Pending JPS5514561A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8722478A JPS5514561A (en) 1978-07-19 1978-07-19 Magnetic recording media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8722478A JPS5514561A (en) 1978-07-19 1978-07-19 Magnetic recording media

Publications (1)

Publication Number Publication Date
JPS5514561A true JPS5514561A (en) 1980-02-01

Family

ID=13908906

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8722478A Pending JPS5514561A (en) 1978-07-19 1978-07-19 Magnetic recording media

Country Status (1)

Country Link
JP (1) JPS5514561A (en)

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