JPS551637A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS551637A
JPS551637A JP7436678A JP7436678A JPS551637A JP S551637 A JPS551637 A JP S551637A JP 7436678 A JP7436678 A JP 7436678A JP 7436678 A JP7436678 A JP 7436678A JP S551637 A JPS551637 A JP S551637A
Authority
JP
Japan
Prior art keywords
magnetic
liquid paraffin
magnetic layer
acid ester
phthalic
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.)
Granted
Application number
JP7436678A
Other languages
Japanese (ja)
Other versions
JPS6049973B2 (en
Inventor
Shoichi Sakamoto
Akira Matsumoto
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 JP7436678A priority Critical patent/JPS6049973B2/en
Publication of JPS551637A publication Critical patent/JPS551637A/en
Publication of JPS6049973B2 publication Critical patent/JPS6049973B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To improve the defacement-proof property of a magnetic layer to make a magnetic recording medium superior in durability by causing the magnetic layer, where a specific resin mixture is a binder, to include liquid paraffin and phthalic acid ester.
CONSTITUTION: Drift paraffin and phthalic-acid ester are added and mixed to the magnetic paint where a mixture of one or more kinds of polymer, which are selected from an urethane elastomer, a polyester resin, an acrylonitrile-butadiene copolymer, and an epoxy resin, and a vinyl chloride-vinyl acetate system copolymer is a binder for magnetic powder. This magnetic paint is applied to a substrate and is dried, and a magnetic layer is formed. As regards liquid paraffin, 0.5 to 10 weight % for magnetic powder is used, and it is desirable that the weight ratio of phthalic-acid ester to liquid paraffin is 1/1 to 1/10. As a result, liquid paraffin can be prevented from exuding onto the magnetic layer surface over a required quantity, and superior lubrication effects can be obtained stably for a long time.
COPYRIGHT: (C)1980,JPO&Japio
JP7436678A 1978-06-20 1978-06-20 magnetic recording medium Expired JPS6049973B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7436678A JPS6049973B2 (en) 1978-06-20 1978-06-20 magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7436678A JPS6049973B2 (en) 1978-06-20 1978-06-20 magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS551637A true JPS551637A (en) 1980-01-08
JPS6049973B2 JPS6049973B2 (en) 1985-11-06

Family

ID=13545080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7436678A Expired JPS6049973B2 (en) 1978-06-20 1978-06-20 magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS6049973B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03169695A (en) * 1989-11-30 1991-07-23 Nhk Spring Co Ltd Discrimination structure of information memory card

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03169695A (en) * 1989-11-30 1991-07-23 Nhk Spring Co Ltd Discrimination structure of information memory card

Also Published As

Publication number Publication date
JPS6049973B2 (en) 1985-11-06

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