JPS5625230A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5625230A
JPS5625230A JP10014479A JP10014479A JPS5625230A JP S5625230 A JPS5625230 A JP S5625230A JP 10014479 A JP10014479 A JP 10014479A JP 10014479 A JP10014479 A JP 10014479A JP S5625230 A JPS5625230 A JP S5625230A
Authority
JP
Japan
Prior art keywords
binder
isocyanate
active hydrogen
less
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.)
Pending
Application number
JP10014479A
Other languages
Japanese (ja)
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 JP10014479A priority Critical patent/JPS5625230A/en
Priority to NL8004482A priority patent/NL8004482A/en
Priority to FR8017397A priority patent/FR2463476B1/en
Priority to DE19803029818 priority patent/DE3029818A1/en
Priority to GB8025719A priority patent/GB2057471B/en
Publication of JPS5625230A publication Critical patent/JPS5625230A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
    • G11B5/7021—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent containing a polyurethane or a polyisocyanate

Abstract

PURPOSE: To form a magnetic layer of excellent coating strength by using a compound with an unsaturated double bond, which reacts on an isocyanate group, and active hydrogen group as a binder for the magnetic layer and then by setting it by radiation irradiation.
CONSTITUTION: As a binder, a two-component compound or three-component compound obtained by making a monomer, etc., having not less than two active hydrogen not less than one unsaturated bond in one molecule (e.g. polyacrylate containing active hydrogen) react upon an isocyanate compound having not less tham two isocyanate groups in one molecule is used. This binder is mixed with proper magnetic powder, etc., to obtain magnetic coating, which is applied on the base of a film, etc., and, after dried, set being irradiated with radiant rays. This method sets the coating sufficiently even if the quantity of isocyanate is small because the double bond sensitive to radiant rays exists in the binder, and the pot life can be adjusted within desired range.
COPYRIGHT: (C)1981,JPO&Japio
JP10014479A 1979-08-06 1979-08-06 Magnetic recording medium Pending JPS5625230A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP10014479A JPS5625230A (en) 1979-08-06 1979-08-06 Magnetic recording medium
NL8004482A NL8004482A (en) 1979-08-06 1980-08-06 MAGNETIC REGISTRATION MATERIAL.
FR8017397A FR2463476B1 (en) 1979-08-06 1980-08-06 MAGNETIC RECORDING ELEMENT
DE19803029818 DE3029818A1 (en) 1979-08-06 1980-08-06 MAGNETIC RECORDING MEDIUM
GB8025719A GB2057471B (en) 1979-08-06 1980-08-06 Magnetic recording media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10014479A JPS5625230A (en) 1979-08-06 1979-08-06 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5625230A true JPS5625230A (en) 1981-03-11

Family

ID=14266110

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10014479A Pending JPS5625230A (en) 1979-08-06 1979-08-06 Magnetic recording medium

Country Status (5)

Country Link
JP (1) JPS5625230A (en)
DE (1) DE3029818A1 (en)
FR (1) FR2463476B1 (en)
GB (1) GB2057471B (en)
NL (1) NL8004482A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583136A (en) * 1981-06-30 1983-01-08 Fuji Photo Film Co Ltd Magnetic recording medium
JPS5832232A (en) * 1981-08-20 1983-02-25 Tdk Corp Double layer coated magnetic recording medium
JPS5832231A (en) * 1981-08-20 1983-02-25 Tdk Corp Double layer coated magnetic recording medium
JPS58146024A (en) * 1982-02-05 1983-08-31 Toyo Ink Mfg Co Ltd Magnetic recording medium
JPS5982628A (en) * 1982-11-01 1984-05-12 Toyo Ink Mfg Co Ltd Magnetic recording medium and its manufacture
JPS60166317A (en) * 1984-02-09 1985-08-29 Takeda Chem Ind Ltd Urethane acrylate, and composition for coating and adhesive use and magnetic recording medium containing same

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56122802A (en) * 1980-03-03 1981-09-26 Toyo Ink Mfg Co Ltd Radiation-curable resin composition
CA1167408A (en) * 1980-09-22 1984-05-15 Hao-Jan Chang Electron beam curing of magnetic media
DE3207293A1 (en) * 1981-03-03 1982-11-04 Memorex Corp., 95052 Santa Clara, Calif. Binder layer for magnetic recording tapes
US4423115A (en) * 1981-10-23 1983-12-27 Tdk Electronics Co., Ltd. Magnetic recording medium
DE3200970C2 (en) * 1982-01-14 1983-11-24 Agfa-Gevaert Ag, 5090 Leverkusen Magnetic storage medium with radiation-curable binders
DE3332504A1 (en) * 1983-09-09 1985-03-28 Basf Ag, 6700 Ludwigshafen MAGNETIC RECORDING CARRIERS
DE3332503A1 (en) * 1983-09-09 1985-03-28 Basf Ag, 6700 Ludwigshafen MAGNETIC RECORDING CARRIERS
US4543268A (en) * 1984-07-05 1985-09-24 Minnesota Mining And Manufacturing Company Electron-beam adhesion-promoting treatment of polyester film base for magnetic recording media
US4594262A (en) * 1984-07-05 1986-06-10 Minnesota Mining And Manufacturing Company Electron beam adhesion-promoting treatment of polyester film base
JPH0610856B2 (en) * 1984-08-04 1994-02-09 ティーディーケイ株式会社 Magnetic recording medium
JP2523279B2 (en) * 1986-05-02 1996-08-07 ティーディーケイ株式会社 Magnetic recording medium and method of manufacturing the same
US6720025B2 (en) 2002-07-01 2004-04-13 3M Innovative Properties Company Slot extrusion coating methods

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL282882A (en) * 1962-09-07
GB1006140A (en) * 1963-07-26 1965-09-29 Gevaert Photo Prod Nv Magnetic recording medium
NL131590C (en) * 1963-09-13 1900-01-01
DE1907957B2 (en) * 1969-02-18 1977-07-21 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING FLEXIBLE MAGNETOGRAM CARRIERS
US3649541A (en) * 1969-07-10 1972-03-14 Du Pont Magnetic recording elements containing stabilized chromium dioxide a polyurethane binder and an isocyanate hardening agent
GB1304824A (en) * 1970-09-18 1973-01-31
JPS4830403A (en) * 1971-08-21 1973-04-21

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583136A (en) * 1981-06-30 1983-01-08 Fuji Photo Film Co Ltd Magnetic recording medium
JPS5832232A (en) * 1981-08-20 1983-02-25 Tdk Corp Double layer coated magnetic recording medium
JPS5832231A (en) * 1981-08-20 1983-02-25 Tdk Corp Double layer coated magnetic recording medium
JPH036572B2 (en) * 1981-08-20 1991-01-30 Teii Deii Kei Kk
JPH0327969B2 (en) * 1981-08-20 1991-04-17 Teii Deii Kei Kk
JPS58146024A (en) * 1982-02-05 1983-08-31 Toyo Ink Mfg Co Ltd Magnetic recording medium
JPH0130221B2 (en) * 1982-02-05 1989-06-16 Toyo Inki Seizo Kk
JPS5982628A (en) * 1982-11-01 1984-05-12 Toyo Ink Mfg Co Ltd Magnetic recording medium and its manufacture
JPH0413765B2 (en) * 1982-11-01 1992-03-10 Toyo Inki Seizo Kk
JPS60166317A (en) * 1984-02-09 1985-08-29 Takeda Chem Ind Ltd Urethane acrylate, and composition for coating and adhesive use and magnetic recording medium containing same

Also Published As

Publication number Publication date
NL8004482A (en) 1981-02-10
GB2057471B (en) 1983-03-23
FR2463476B1 (en) 1988-05-20
GB2057471A (en) 1981-04-01
DE3029818A1 (en) 1981-02-26
FR2463476A1 (en) 1981-02-20

Similar Documents

Publication Publication Date Title
JPS5625230A (en) Magnetic recording medium
JPS56130835A (en) Manufacture for magnetic recording medium
JPS5792421A (en) Magnetic recording medium
JPS5740745A (en) Magnetic recording medium
JPS54123922A (en) Magnetic recording medium
JPS5625231A (en) Magnetic recording medium
JPS54119904A (en) Magnetic recording medium
JPS52110634A (en) Information recording material
JPS5272728A (en) Composition of thermosetting powder paint
JPS5712425A (en) Heat mode optical recording medium
JPS5221033A (en) Water resin composition
JPS5225829A (en) Coating composition
JPS5597026A (en) Magnetic recording medium
JPS5278239A (en) Method of manufacturing adhesive tape
JPS5625235A (en) Manufacture of magnetic recording medium
JPS51136732A (en) Method for curing photo-curable coating composition
JPS5724028A (en) Magnetic recording medium
JPS5532252A (en) Magnetic recording medium
JPS5653156A (en) Electrical radiation absorbing composition
JPS5421426A (en) Coating resin composition
JPS56105334A (en) Magnetic recording medium
JPS5285872A (en) Radiation picture receiving and reproduction apparatus
JPS563431A (en) Magnetic recording medium and its manufacture
JPS51143038A (en) Coating composition curable with electron radiation
JPS53133405A (en) Manufacture of film for magnetic disc