JPS6439623A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS6439623A
JPS6439623A JP19522187A JP19522187A JPS6439623A JP S6439623 A JPS6439623 A JP S6439623A JP 19522187 A JP19522187 A JP 19522187A JP 19522187 A JP19522187 A JP 19522187A JP S6439623 A JPS6439623 A JP S6439623A
Authority
JP
Japan
Prior art keywords
polycarbonate polyurethane
magnetic layer
powder
phenoxy resin
recording medium
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
JP19522187A
Other languages
Japanese (ja)
Inventor
Fumihiro Tokunaga
Atsushi Nakagawa
Tsutomu Okita
Toshio Kawamata
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 JP19522187A priority Critical patent/JPS6439623A/en
Priority to US07/229,411 priority patent/US4970121A/en
Publication of JPS6439623A publication Critical patent/JPS6439623A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)

Abstract

PURPOSE:To improve durability by dispersing fine ferromagnetic powder into a binder consisting of polycarbonate polyurethane and phenoxy resin, thereby forming a magnetic layer. CONSTITUTION:The magnetic layer of a magnetic recording medium constituted by providing the magnetic layer dispersed with the fine ferromagnetic powder in a binder on a nonmagnetic base is formed by dispersing the fine ferromagnetic powder into the binder consisting of the polycarbonate polyurethane which is low in Young's modulus but is elongatable and the phenoxy resin which is brittle but is hard and durable. Namely, the polycarbonate polyurethane and the phenoxy resin are incorporated in a 1.5:1-5:1 range by weight into the magnetic layer. Powder dislodgment increases and still durability is degraded if the content by weight of the polycarbonate polyurethane is <=1.5. The powder dislodgment and still durability are similarly degraded if the content of the polycarbonate polyurethane is >=5.
JP19522187A 1987-08-06 1987-08-06 Magnetic recording medium Pending JPS6439623A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP19522187A JPS6439623A (en) 1987-08-06 1987-08-06 Magnetic recording medium
US07/229,411 US4970121A (en) 1987-08-06 1988-08-08 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19522187A JPS6439623A (en) 1987-08-06 1987-08-06 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS6439623A true JPS6439623A (en) 1989-02-09

Family

ID=16337480

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19522187A Pending JPS6439623A (en) 1987-08-06 1987-08-06 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS6439623A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6126041A (en) * 1984-07-16 1986-02-05 Mitsubishi Paper Mills Ltd Silver halide photographic emulsion
JPS623421A (en) * 1985-06-28 1987-01-09 Konishiroku Photo Ind Co Ltd Magnetic recording medium
JPS62195719A (en) * 1986-02-21 1987-08-28 Konishiroku Photo Ind Co Ltd Durable magnetic recording medium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6126041A (en) * 1984-07-16 1986-02-05 Mitsubishi Paper Mills Ltd Silver halide photographic emulsion
JPS623421A (en) * 1985-06-28 1987-01-09 Konishiroku Photo Ind Co Ltd Magnetic recording medium
JPS62195719A (en) * 1986-02-21 1987-08-28 Konishiroku Photo Ind Co Ltd Durable magnetic recording medium

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