JPS6484420A - Disk-shaped magnetic recording medium - Google Patents

Disk-shaped magnetic recording medium

Info

Publication number
JPS6484420A
JPS6484420A JP62241908A JP24190887A JPS6484420A JP S6484420 A JPS6484420 A JP S6484420A JP 62241908 A JP62241908 A JP 62241908A JP 24190887 A JP24190887 A JP 24190887A JP S6484420 A JPS6484420 A JP S6484420A
Authority
JP
Japan
Prior art keywords
carbon black
resin
group
contg
intermediate layer
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
JP62241908A
Other languages
Japanese (ja)
Other versions
JP2564145B2 (en
Inventor
Nobuyuki Sekiguchi
Kazumasa Matsumoto
Kimio Ozawa
Hisato Kato
Kenichi Nakajima
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP62241908A priority Critical patent/JP2564145B2/en
Publication of JPS6484420A publication Critical patent/JPS6484420A/en
Application granted granted Critical
Publication of JP2564145B2 publication Critical patent/JP2564145B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To improve magnetic characteristic and durability by coating a mag netic coating compd. consisting of ferromagnetic material particles and a binder resin soln. contg. a specific resin on a prescribed substrate or a nonmagnetic substrate via a prescribed intermediate layer. CONSTITUTION:The coating compd. prepd. by dispersing and kneading the ferromagnetic material particles into the binder resin soln. contg. the vinyl chloride resin having acidic groups (including salts), epoxy group and hydroxyl group and the ferromagnetic material particles is coated on the nonmagnetic substrate which is kneaded with a carbon black or has the carbon black as the intermediate layer to form the disk-shaped recording medium. The acidic groups of the above-mentioned resin are preferably a sulfo group, phospho group and carboxy group and the metals forming the salts with said acids are preferably Li, K and Na. The amt. of the resin to be used is preferably 5-25wt.%, more particularly preferably 10-25wt.% of the weight of the ferro magnetic powder. The carbon black is kneaded with the base consisting of polyethylene terephthalate, etc., or the intermediate layer contg. the carbon black is provided between the base and the magnetic layer.
JP62241908A 1987-09-25 1987-09-25 Disk-shaped magnetic recording medium Expired - Fee Related JP2564145B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62241908A JP2564145B2 (en) 1987-09-25 1987-09-25 Disk-shaped magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62241908A JP2564145B2 (en) 1987-09-25 1987-09-25 Disk-shaped magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS6484420A true JPS6484420A (en) 1989-03-29
JP2564145B2 JP2564145B2 (en) 1996-12-18

Family

ID=17081338

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62241908A Expired - Fee Related JP2564145B2 (en) 1987-09-25 1987-09-25 Disk-shaped magnetic recording medium

Country Status (1)

Country Link
JP (1) JP2564145B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61248223A (en) * 1985-04-25 1986-11-05 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS62241906A (en) * 1986-04-14 1987-10-22 Tosoh Corp Fluorine-containing polymer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61248223A (en) * 1985-04-25 1986-11-05 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS62241906A (en) * 1986-04-14 1987-10-22 Tosoh Corp Fluorine-containing polymer

Also Published As

Publication number Publication date
JP2564145B2 (en) 1996-12-18

Similar Documents

Publication Publication Date Title
JPS6457422A (en) Production of magnetic coating compound
JPS57133521A (en) Magnetic recording medium
JPS6413225A (en) Magnetic recording medium
JPS6484420A (en) Disk-shaped magnetic recording medium
JPS6484419A (en) Disk-shaped magnetic recording medium
JPS6484422A (en) Disk-shaped magnetic recording medium
JPS6427022A (en) Magnetic recording medium and its production
JPS6484417A (en) Disk-shaped magnetic recording medium
JPS6484418A (en) Disk-shaped magnetic recording medium
JPS6484424A (en) Disk-shaped magnetic recording medium
JPS6484421A (en) Disk-shaped magnetic recording medium
JPS6484415A (en) Disk-shaped magnetic recording medium
JPS6484416A (en) Disk-shaped magnetic recording medium
JPS6484426A (en) Disk-shaped magnetic recording medium
JPS6484414A (en) Disk-shaped magnetic recording medium
JPS56159839A (en) Magnetic recording medium
JPS6489023A (en) Magnetic recording medium
JPS6484423A (en) Disk-shaped magnetic recording medium
JPS6484437A (en) Production of disk-shaped magnetic recording medium
JPS57201004A (en) Magnetic recording medium
EP0898269A3 (en) Magnetic recording medium
JPS6455731A (en) Magnetic recording medium
JPS54103005A (en) Magnetic disc coating composite
JPS57158026A (en) Magnetic recording medium
JPS6489024A (en) Magnetic recording medium

Legal Events

Date Code Title Description
S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees