JPS5651025A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5651025A
JPS5651025A JP12749879A JP12749879A JPS5651025A JP S5651025 A JPS5651025 A JP S5651025A JP 12749879 A JP12749879 A JP 12749879A JP 12749879 A JP12749879 A JP 12749879A JP S5651025 A JPS5651025 A JP S5651025A
Authority
JP
Japan
Prior art keywords
carbon black
magnetic
recording medium
binder
coating film
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
JP12749879A
Other languages
Japanese (ja)
Other versions
JPH026131B2 (en
Inventor
Seiji Wataya
Takeshi Matsuura
Akira Morioka
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 JP12749879A priority Critical patent/JPS5651025A/en
Publication of JPS5651025A publication Critical patent/JPS5651025A/en
Publication of JPH026131B2 publication Critical patent/JPH026131B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To increase the SN ratio, by coating a magnetic coating film in which a specific carbon black is combined with a specific binder and kneaded with magnetic powder, on a substrate.
CONSTITUTION: A carbon black containing 3wt% or more volatile matter is kneaded with a magnetic powder by using a binder having hydroxyl group and this is coated on a substrate to form magnetic coating film. Thus, the dispersibility of the carbon black in the binder is improved, allowing to improve the smoothness of the surface of magnetic coating film, and even if the amount of carbon black used is more, the SN ratio of the magnetic recording medium can be increased.
COPYRIGHT: (C)1981,JPO&Japio
JP12749879A 1979-10-02 1979-10-02 Magnetic recording medium Granted JPS5651025A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12749879A JPS5651025A (en) 1979-10-02 1979-10-02 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12749879A JPS5651025A (en) 1979-10-02 1979-10-02 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS5651025A true JPS5651025A (en) 1981-05-08
JPH026131B2 JPH026131B2 (en) 1990-02-07

Family

ID=14961449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12749879A Granted JPS5651025A (en) 1979-10-02 1979-10-02 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5651025A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS595429A (en) * 1982-06-30 1984-01-12 Hitachi Maxell Ltd Magnetic recording medium
JPS5919234A (en) * 1982-07-26 1984-01-31 Fuji Photo Film Co Ltd Magnetic recording body
JPS5975432A (en) * 1982-10-22 1984-04-28 Fuji Photo Film Co Ltd Magnetic recording body

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS595429A (en) * 1982-06-30 1984-01-12 Hitachi Maxell Ltd Magnetic recording medium
JPS6331856B2 (en) * 1982-06-30 1988-06-27 Hitachi Maxell
JPS5919234A (en) * 1982-07-26 1984-01-31 Fuji Photo Film Co Ltd Magnetic recording body
JPH0479057B2 (en) * 1982-07-26 1992-12-14 Fuji Photo Film Co Ltd
JPS5975432A (en) * 1982-10-22 1984-04-28 Fuji Photo Film Co Ltd Magnetic recording body
JPH0479059B2 (en) * 1982-10-22 1992-12-14 Fuji Photo Film Co Ltd

Also Published As

Publication number Publication date
JPH026131B2 (en) 1990-02-07

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