JPS57205824A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57205824A
JPS57205824A JP8879181A JP8879181A JPS57205824A JP S57205824 A JPS57205824 A JP S57205824A JP 8879181 A JP8879181 A JP 8879181A JP 8879181 A JP8879181 A JP 8879181A JP S57205824 A JPS57205824 A JP S57205824A
Authority
JP
Japan
Prior art keywords
recording medium
magnetic recording
base material
fine particles
titanium oxide
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
JP8879181A
Other languages
Japanese (ja)
Other versions
JPS6223367B2 (en
Inventor
Shigeru Horie
Takamasa Asano
Tetsuo Ichihashi
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 JP8879181A priority Critical patent/JPS57205824A/en
Publication of JPS57205824A publication Critical patent/JPS57205824A/en
Publication of JPS6223367B2 publication Critical patent/JPS6223367B2/ja
Granted 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
    • G11B5/708—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 addition of non-magnetic particles to the layer

Abstract

PURPOSE:To provide a light transmission preventing function which scarcely causes drop-out and a color noise, by making a base material film contain fine particles of titanium oxide. CONSTITUTION:In a film of the base material of a magnetic recording medium such as a polyester film, 1-6wt% titanium oxide is blended in the form of fine particles whose mean particle diameter is 1mu or preferably <=0.3mu.
JP8879181A 1981-06-11 1981-06-11 Magnetic recording medium Granted JPS57205824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8879181A JPS57205824A (en) 1981-06-11 1981-06-11 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8879181A JPS57205824A (en) 1981-06-11 1981-06-11 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS57205824A true JPS57205824A (en) 1982-12-17
JPS6223367B2 JPS6223367B2 (en) 1987-05-22

Family

ID=13952661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8879181A Granted JPS57205824A (en) 1981-06-11 1981-06-11 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57205824A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5254428A (en) * 1975-10-23 1977-05-02 Ici Ltd Image forming photosensitive material
JPS53136982A (en) * 1977-05-06 1978-11-29 Teijin Ltd Polyester resin composition
JPS54148832A (en) * 1978-05-15 1979-11-21 Teijin Ltd Delustered polyester thin film and its production
JPS5630438U (en) * 1979-08-08 1981-03-24
JPS5683841A (en) * 1979-12-11 1981-07-08 Toray Ind Inc Base film for magnetic recording

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5294637A (en) * 1976-02-05 1977-08-09 Howa Mach Ltd Waterproof window

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5254428A (en) * 1975-10-23 1977-05-02 Ici Ltd Image forming photosensitive material
JPS53136982A (en) * 1977-05-06 1978-11-29 Teijin Ltd Polyester resin composition
JPS54148832A (en) * 1978-05-15 1979-11-21 Teijin Ltd Delustered polyester thin film and its production
JPS5630438U (en) * 1979-08-08 1981-03-24
JPS5683841A (en) * 1979-12-11 1981-07-08 Toray Ind Inc Base film for magnetic recording

Also Published As

Publication number Publication date
JPS6223367B2 (en) 1987-05-22

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