JPS5555431A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5555431A
JPS5555431A JP12814878A JP12814878A JPS5555431A JP S5555431 A JPS5555431 A JP S5555431A JP 12814878 A JP12814878 A JP 12814878A JP 12814878 A JP12814878 A JP 12814878A JP S5555431 A JPS5555431 A JP S5555431A
Authority
JP
Japan
Prior art keywords
carbon black
magnetic layer
support material
conductive substance
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
JP12814878A
Other languages
Japanese (ja)
Inventor
Hiroshi Zaitsu
Takezo Shimizu
Osamu Saito
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 JP12814878A priority Critical patent/JPS5555431A/en
Priority to US06/085,585 priority patent/US4275113A/en
Publication of JPS5555431A publication Critical patent/JPS5555431A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To enhance the adhesion force between a conductive substance layer and a support material and a magnetic layer to lower the surface resistance of the magnetic layer by using a specific resin to provide the conductive substance layer, where a specific carbon black is included, between the support material consisting of polyester and the magnetic layer.
CONSTITUTION: The carbon black of a surface area over 700m2/g, an oil absorption quantity over 300ml(DBP)/100g and a particle diameter below 30mμ and the applied liquid which is obtained by dispersing a polyester, which includes terephthalic acid, if an approximately 10000W20000 molecular weight in cyclohexane, etc., are applied between a support material of a polyethylene terephthalate film or sheet and a magnetic layer and are dried to form a conductive substance layer. The carbon black of a 5W30wt part is used for 100 of polyester resin and the carbon black. As a result, a magnetic recording medium can be obtained which is not exfoliated in a using time and has a strong adhesion force and a small surface resistance and, consequently, is difficult to charge.
COPYRIGHT: (C)1980,JPO&Japio
JP12814878A 1978-10-17 1978-10-17 Magnetic recording medium Pending JPS5555431A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP12814878A JPS5555431A (en) 1978-10-17 1978-10-17 Magnetic recording medium
US06/085,585 US4275113A (en) 1978-10-17 1979-10-17 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12814878A JPS5555431A (en) 1978-10-17 1978-10-17 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5555431A true JPS5555431A (en) 1980-04-23

Family

ID=14977566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12814878A Pending JPS5555431A (en) 1978-10-17 1978-10-17 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5555431A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59139132A (en) * 1983-01-26 1984-08-09 Victor Co Of Japan Ltd Magnetic recording medium
JPS6038723A (en) * 1983-08-09 1985-02-28 Tdk Corp Magnetic recording medium
JPS6038721A (en) * 1983-08-09 1985-02-28 Tdk Corp Magnetic recording medium
JPS60164926A (en) * 1984-02-08 1985-08-28 Hitachi Maxell Ltd Magnetic disk
JPS6173237A (en) * 1984-09-18 1986-04-15 Hitachi Maxell Ltd Magnetic disk
JPS634412A (en) * 1986-06-24 1988-01-09 Hitachi Maxell Ltd Magnetic recording medium
JPS63144415A (en) * 1986-12-09 1988-06-16 Toshiba Corp Magnetic recording medium
JPH05120676A (en) * 1991-10-28 1993-05-18 Fuji Photo Film Co Ltd Magnetic recording disk and production of the same

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59139132A (en) * 1983-01-26 1984-08-09 Victor Co Of Japan Ltd Magnetic recording medium
JPS6038723A (en) * 1983-08-09 1985-02-28 Tdk Corp Magnetic recording medium
JPS6038721A (en) * 1983-08-09 1985-02-28 Tdk Corp Magnetic recording medium
JPS60164926A (en) * 1984-02-08 1985-08-28 Hitachi Maxell Ltd Magnetic disk
JPS6173237A (en) * 1984-09-18 1986-04-15 Hitachi Maxell Ltd Magnetic disk
JPH0572650B2 (en) * 1984-09-18 1993-10-12 Hitachi Maxell
JPS634412A (en) * 1986-06-24 1988-01-09 Hitachi Maxell Ltd Magnetic recording medium
JPH0743823B2 (en) * 1986-06-24 1995-05-15 日立マクセル株式会社 Magnetic recording medium
JPS63144415A (en) * 1986-12-09 1988-06-16 Toshiba Corp Magnetic recording medium
JPH05120676A (en) * 1991-10-28 1993-05-18 Fuji Photo Film Co Ltd Magnetic recording disk and production of the same

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