JPS5625235A - Manufacture of magnetic recording medium - Google Patents

Manufacture of magnetic recording medium

Info

Publication number
JPS5625235A
JPS5625235A JP10113379A JP10113379A JPS5625235A JP S5625235 A JPS5625235 A JP S5625235A JP 10113379 A JP10113379 A JP 10113379A JP 10113379 A JP10113379 A JP 10113379A JP S5625235 A JPS5625235 A JP S5625235A
Authority
JP
Japan
Prior art keywords
magnetic
binder
radiant rays
layer
compound
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
JP10113379A
Other languages
Japanese (ja)
Other versions
JPS6214887B2 (en
Inventor
Kaoru Nakajima
Kunio Kobayashi
Yoshiaki Kugen
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP10113379A priority Critical patent/JPS5625235A/en
Priority to DE3029819A priority patent/DE3029819C2/en
Priority to NL8004483A priority patent/NL8004483A/en
Priority to GB8025720A priority patent/GB2055877B/en
Priority to FR8017398A priority patent/FR2463477B1/en
Publication of JPS5625235A publication Critical patent/JPS5625235A/en
Priority to US06/442,845 priority patent/US4443490A/en
Publication of JPS6214887B2 publication Critical patent/JPS6214887B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To improve resistance to wear by mirror-finishing a magnetic layer by flattening the surface of a magnetic compound layer formed on a base material after partially setting a binder by preliminarily irradiating the magnetic compound layer with radiant rays and then by irradiating the surface with radiant rays finally.
CONSTITUTION: A base material such as a film is coated with magnetic coating that contains magnetic powder and a binder obtained by blending thermoplastic resin with a compound generating crossing bonds through radiation irradiation, e.g. an acrylic compound with not less than two double bonds. A magnetic layer, after being formed by drying, is preliminarily irradiated with radiant rays such as electron beams under less than about 1Mrad to set the binder partially. Next, the surface of the magnetic compound layer is flattened by calendering, etc., and then irradiated finally with radiant rays under about 1W10Mrad to set the binder component sufficiently. Consequently, a tape with the magnetic layer of desired hardness and wear resistance can be obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP10113379A 1979-08-06 1979-08-08 Manufacture of magnetic recording medium Granted JPS5625235A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP10113379A JPS5625235A (en) 1979-08-08 1979-08-08 Manufacture of magnetic recording medium
DE3029819A DE3029819C2 (en) 1979-08-06 1980-08-06 MAGNETIC RECORDING MEDIUM
NL8004483A NL8004483A (en) 1979-08-06 1980-08-06 MAGNETIC REGISTRATION MATERIAL.
GB8025720A GB2055877B (en) 1979-08-06 1980-08-06 Magnetic recording media
FR8017398A FR2463477B1 (en) 1979-08-06 1980-08-06 MAGNETIC RECORDING ELEMENT
US06/442,845 US4443490A (en) 1979-08-06 1982-11-18 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10113379A JPS5625235A (en) 1979-08-08 1979-08-08 Manufacture of magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS5625235A true JPS5625235A (en) 1981-03-11
JPS6214887B2 JPS6214887B2 (en) 1987-04-04

Family

ID=14292573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10113379A Granted JPS5625235A (en) 1979-08-06 1979-08-08 Manufacture of magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5625235A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58122624A (en) * 1982-01-14 1983-07-21 Fujitsu Ltd Manufacture of magnetic recording medium
JPS61175928A (en) * 1985-01-29 1986-08-07 Fuji Photo Film Co Ltd Production of magnetic recording medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5077433A (en) * 1973-11-13 1975-06-24
JPS5481804A (en) * 1977-12-13 1979-06-29 Fujitsu Ltd Production of magnetic disc

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5077433A (en) * 1973-11-13 1975-06-24
JPS5481804A (en) * 1977-12-13 1979-06-29 Fujitsu Ltd Production of magnetic disc

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58122624A (en) * 1982-01-14 1983-07-21 Fujitsu Ltd Manufacture of magnetic recording medium
JPH0258688B2 (en) * 1982-01-14 1990-12-10 Fujitsu Ltd
JPS61175928A (en) * 1985-01-29 1986-08-07 Fuji Photo Film Co Ltd Production of magnetic recording medium

Also Published As

Publication number Publication date
JPS6214887B2 (en) 1987-04-04

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