JPS5421304A - Double layer magnetic recording tape - Google Patents

Double layer magnetic recording tape

Info

Publication number
JPS5421304A
JPS5421304A JP8575377A JP8575377A JPS5421304A JP S5421304 A JPS5421304 A JP S5421304A JP 8575377 A JP8575377 A JP 8575377A JP 8575377 A JP8575377 A JP 8575377A JP S5421304 A JPS5421304 A JP S5421304A
Authority
JP
Japan
Prior art keywords
magnetic recording
double layer
tape
recording tape
layer magnetic
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
JP8575377A
Other languages
Japanese (ja)
Inventor
Masaaki Suzuki
Osamu Suzuki
Yukinobu Kurokawa
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP8575377A priority Critical patent/JPS5421304A/en
Priority to DE19782831542 priority patent/DE2831542A1/en
Publication of JPS5421304A publication Critical patent/JPS5421304A/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
    • G11B5/716—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 two or more magnetic layers

Abstract

PURPOSE: To use the tape in ordinary tape recorders and tape decks provided with 160% type tape select positions and make interchangeability sufficient by providing two layers of magnetic layers respectively differing in magnetic characteristics and drying thickness.
COPYRIGHT: (C)1979,JPO&Japio
JP8575377A 1977-07-18 1977-07-18 Double layer magnetic recording tape Pending JPS5421304A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8575377A JPS5421304A (en) 1977-07-18 1977-07-18 Double layer magnetic recording tape
DE19782831542 DE2831542A1 (en) 1977-07-18 1978-07-18 Two-layer magnetic recording tape - has two ferromagnetic oxide layers, with inner layer having lower coercive force than outer layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8575377A JPS5421304A (en) 1977-07-18 1977-07-18 Double layer magnetic recording tape

Publications (1)

Publication Number Publication Date
JPS5421304A true JPS5421304A (en) 1979-02-17

Family

ID=13867608

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8575377A Pending JPS5421304A (en) 1977-07-18 1977-07-18 Double layer magnetic recording tape

Country Status (2)

Country Link
JP (1) JPS5421304A (en)
DE (1) DE2831542A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5448504A (en) * 1977-09-21 1979-04-17 Tdk Corp Magnetic recording medium
JPS5817539A (en) * 1981-07-21 1983-02-01 Sony Corp Magnetic recording medium
WO1983000767A1 (en) * 1981-08-20 1983-03-03 Ohtsuki, Akira Two-layer coated magnetic recording medium
WO1983001145A1 (en) * 1981-09-28 1983-03-31 Kubota, Isao Magnetic recording medium
WO1983001144A1 (en) * 1981-09-28 1983-03-31 Kubota, Isao Magnetic recording medium
JPS63103429A (en) * 1986-10-20 1988-05-09 Fuji Photo Film Co Ltd Magnetic recording medium
JPH01267833A (en) * 1988-04-19 1989-10-25 Fuji Photo Film Co Ltd Magnetic recording medium and production thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5733435A (en) * 1980-07-31 1982-02-23 Tdk Corp Magnetic recording medium
US5035856A (en) * 1989-02-08 1991-07-30 Konica Corporation Magnetic recording medium
DE19714161A1 (en) * 1997-04-05 1998-10-08 Emtec Magnetics Gmbh Magnetic record carrier

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5448504A (en) * 1977-09-21 1979-04-17 Tdk Corp Magnetic recording medium
JPS5817539A (en) * 1981-07-21 1983-02-01 Sony Corp Magnetic recording medium
JPH036575B2 (en) * 1981-07-21 1991-01-30 Sony Corp
WO1983000767A1 (en) * 1981-08-20 1983-03-03 Ohtsuki, Akira Two-layer coated magnetic recording medium
WO1983001145A1 (en) * 1981-09-28 1983-03-31 Kubota, Isao Magnetic recording medium
WO1983001144A1 (en) * 1981-09-28 1983-03-31 Kubota, Isao Magnetic recording medium
JPS5856228A (en) * 1981-09-28 1983-04-02 Sony Corp Magnetic recording medium
JPH036576B2 (en) * 1981-09-28 1991-01-30 Sony Corp
JPS63103429A (en) * 1986-10-20 1988-05-09 Fuji Photo Film Co Ltd Magnetic recording medium
JPH0640382B2 (en) * 1986-10-20 1994-05-25 富士写真フイルム株式会社 Magnetic recording medium
JPH01267833A (en) * 1988-04-19 1989-10-25 Fuji Photo Film Co Ltd Magnetic recording medium and production thereof

Also Published As

Publication number Publication date
DE2831542A1 (en) 1979-02-01

Similar Documents

Publication Publication Date Title
JPS5593530A (en) Magnetic head unit
JPS5251908A (en) Magnetic recording tape
JPS545705A (en) Double layer magnetic recording medium
JPS5421304A (en) Double layer magnetic recording tape
JPS5225603A (en) Magnetic tape
JPS52127204A (en) Magnetic recording medium
JPS5316604A (en) Double layered magnetic recording medium
JPS51149006A (en) High density magnetic recording tape sheet
JPS5279905A (en) Magnetic recording tape
JPS528807A (en) Magnetic recording medium
JPS53144705A (en) Production of magnetic recording media
JPS527619A (en) Magnetic tape record playback system
JPS51138409A (en) Magnetic recording medium
JPS5374003A (en) Magnetic recording medium
JPS52112306A (en) Magnetic recording tape
JPS5249004A (en) Magnetic tape
JPS52153407A (en) Magnetic recording medium
JPS5258902A (en) Magnetic record-reproduction unit
JPS5419711A (en) Multi-layer magnetic recording medium
JPS528806A (en) Magnetic recording tape
JPS5378822A (en) Multi-coil and -channel type thin film magnetic head
JPS5220003A (en) Open reel type magnetic recording reproducer
JPS5364014A (en) Magnetic recording and reproducing apparatus
JPS51137408A (en) Cassette tape recorder
JPS53109606A (en) Production of magnetic recording medium