JPS55142418A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS55142418A
JPS55142418A JP5042079A JP5042079A JPS55142418A JP S55142418 A JPS55142418 A JP S55142418A JP 5042079 A JP5042079 A JP 5042079A JP 5042079 A JP5042079 A JP 5042079A JP S55142418 A JPS55142418 A JP S55142418A
Authority
JP
Japan
Prior art keywords
layer
magnetic
protecting layer
magnetic recording
polyester
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
JP5042079A
Other languages
Japanese (ja)
Inventor
Kazuto Karashima
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.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell 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 Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP5042079A priority Critical patent/JPS55142418A/en
Publication of JPS55142418A publication Critical patent/JPS55142418A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To improve the durability of magnetic recording media, by providing the protecting layer consisting of the vinyl chloride-vinylpropionic acid copolymer, polyester resin and polyisocyanate of low molecular weight on the surface of magnetic layer.
CONSTITUTION: On the mold release layer 2 formed on the film 1 such as polyester, the protecting layer paint mixing a given amount of vinyl chloride-vinylpropionic acid copolymer, polyester resin such as branched polyester containing hydroxyl radical and plyisocyanate of low molecular weight is coated, and the protecting layer 3 is formed with drying. The magnetic layer 4 is formed on the protecting layer 4 to constitute the copying magnetic sheet, the magnetic substance layer 4 is laminated on the board 5 such as polyvinyl chloride so that it is contact with the board 5, and after pressing, the film 1 is peeled. Thus, the strength of the protecting layer 3 is increased, the elasticity is at suitable degree, and the magnetic recording media durable for a long time can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP5042079A 1979-04-23 1979-04-23 Magnetic recording medium Pending JPS55142418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5042079A JPS55142418A (en) 1979-04-23 1979-04-23 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5042079A JPS55142418A (en) 1979-04-23 1979-04-23 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS55142418A true JPS55142418A (en) 1980-11-07

Family

ID=12858365

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5042079A Pending JPS55142418A (en) 1979-04-23 1979-04-23 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS55142418A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0713202U (en) * 1993-08-06 1995-03-07 宮田自動機販売株式会社 Footwear

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0713202U (en) * 1993-08-06 1995-03-07 宮田自動機販売株式会社 Footwear

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