JPS56159837A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS56159837A
JPS56159837A JP6220580A JP6220580A JPS56159837A JP S56159837 A JPS56159837 A JP S56159837A JP 6220580 A JP6220580 A JP 6220580A JP 6220580 A JP6220580 A JP 6220580A JP S56159837 A JPS56159837 A JP S56159837A
Authority
JP
Japan
Prior art keywords
magnetic
recording medium
coating
grain size
polyester 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.)
Pending
Application number
JP6220580A
Other languages
Japanese (ja)
Inventor
Satoyuki Nakamura
Yoji Murakami
Tomio Adachi
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.)
Teijin Ltd
Original Assignee
Teijin 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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP6220580A priority Critical patent/JPS56159837A/en
Publication of JPS56159837A publication Critical patent/JPS56159837A/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
    • G11B5/7022—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 containing mixtures of polyurethanes or polyisocyanates with other polymers

Abstract

PURPOSE:To obtain a magnetic recording medium of good adhesion between a magnetic material layer and a substrate by coating a magnetic coating using a specific binder on a substrate consisting of a polyester film of a small average crystal grain size, followed by drying. CONSTITUTION:A polyester film of 36-46Angstrom of an average crystal grain size having been subjected to stretching and orientation treatment is used as a backing material. Namely, the magnetic coating contg. a binder (A) consisting of 10-90wt% polyvinylchloride, polyvinylacetate or vinyl chloride-vinyl acetate copolymer (a) and 90-10wt% isocyanate compound and polyurethane resin (b) and magnetic powder (B) is applied on the above-mentioned backing material and is dried, whereby the magnetic material layer is formed and the recording medium is obtained.
JP6220580A 1980-05-13 1980-05-13 Magnetic recording medium Pending JPS56159837A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6220580A JPS56159837A (en) 1980-05-13 1980-05-13 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6220580A JPS56159837A (en) 1980-05-13 1980-05-13 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS56159837A true JPS56159837A (en) 1981-12-09

Family

ID=13193402

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6220580A Pending JPS56159837A (en) 1980-05-13 1980-05-13 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS56159837A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61250764A (en) * 1985-04-30 1986-11-07 Toshiba Corp Microprocessor device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61250764A (en) * 1985-04-30 1986-11-07 Toshiba Corp Microprocessor device

Similar Documents

Publication Publication Date Title
GB1404819A (en) Magnetic recording material and method for its production
JPS567233A (en) Magnetic recording medium
JPS5492263A (en) Heat sensitive recording medium
JPS56159837A (en) Magnetic recording medium
CA976304A (en) Treating solution and method for incorporating an adhesion promoter into a polymeric substrate
JPS57208636A (en) Magnetic recording medium
JPS5345339A (en) Adhesive-backed fluoring resin film
JPS563429A (en) Magnetic recording substance
JPS57191831A (en) Metallic thin film type magnetic recording medium and its manufacture
JPS52130979A (en) Immobilization of glucoseisomerase
JPS5584039A (en) Magnetic recording medium
JPS55125539A (en) Magnetic recording substance
JPS51131303A (en) Magnetic recording medium
JPS5562982A (en) Bonding of double-side adhesive tape
JPS5584044A (en) Magnetic recording medium
EP0350877A3 (en) Flexible magnetic disc
JPS56159840A (en) Magnetic recording medium
JPS5597030A (en) Magnetic layer heat transcript material
JPS5232304A (en) Laminate film having magnetic recording layer
JPS5690422A (en) Magnetic recording medium and its production
CA931441A (en) Method of coating stiff materials onto fragile, heat vulnerable substrate webs
JPS5367787A (en) Polyester film composite material
JPS57123531A (en) Magnetic recording medium
JPS56134314A (en) Cleaning tape
JPS53109606A (en) Production of magnetic recording medium