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KR850005663A - Magnetic coating composition and magnetic recording medium containing iron carbide - Google Patents

Magnetic coating composition and magnetic recording medium containing iron carbide Download PDF

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Publication number
KR850005663A
KR850005663A KR1019840006584A KR840006584A KR850005663A KR 850005663 A KR850005663 A KR 850005663A KR 1019840006584 A KR1019840006584 A KR 1019840006584A KR 840006584 A KR840006584 A KR 840006584A KR 850005663 A KR850005663 A KR 850005663A
Authority
KR
South Korea
Prior art keywords
coating composition
iron carbide
magnetic
recording medium
magnetic recording
Prior art date
Application number
KR1019840006584A
Other languages
Korean (ko)
Other versions
KR890003200B1 (en
Inventor
요시유끼(외 1) 시부야
Original Assignee
야마다 미노루
다이낀 고오교오 가부시끼 가이샤
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 야마다 미노루, 다이낀 고오교오 가부시끼 가이샤 filed Critical 야마다 미노루
Publication of KR850005663A publication Critical patent/KR850005663A/en
Application granted granted Critical
Publication of KR890003200B1 publication Critical patent/KR890003200B1/en

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  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)

Abstract

내용 없음No content

Description

탄화철을 함유하는 자기피복 조성물과 자기 기록매체Magnetic coating composition and magnetic recording medium containing iron carbide

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (6)

탄화철을 함유하는 침상입자로 구성되는 것을 특징으로 하는 자기피복 조성물.Magnetic coating composition comprising a needle-like particle containing iron carbide. 제1항에 있어서, 침상입자의 평균축비가 적어도 3인 것을 특징으로 하는 피복조성물.The coating composition according to claim 1, wherein the average axial ratio of the acicular particles is at least three. 제1항에 있어서, 침상입자가 적어도 20중량%의 탄화철함량을 갖는 것을 특징으로 하는 피복조성물.The coating composition according to claim 1, wherein the acicular particles have an iron carbide content of at least 20% by weight. 제1항에 있어서, 탄화철이 표면-처리제와 함께 표면에 피복되는 것을 특징으로 하는 피복조성물.The coating composition according to claim 1, wherein the iron carbide is coated on the surface together with the surface treating agent. 제1항에 있어서, 탄화철이 소결방지제를 함유하는 것을 특징으로 하는 피복조성물.The coating composition according to claim 1, wherein the iron carbide contains an antisintering agent. 기체와 그 위에 있는 자기기록층으로 구성되고, 상기 층은 청구범위 1 내지 5항중 어느 하나의 자기 피복 조성물을 피복함으로써 얻게되는 것을 특징으로 하는자기 기록매체.17. A magnetic recording medium comprising a gas and a magnetic recording layer thereon, the layer obtained by coating the magnetic coating composition of any one of claims 1 to 5. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019840006584A 1983-12-07 1984-10-23 Acicular particulate material containing iron carbide KR890003200B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP58-231875 1983-12-07
JP213875 1983-12-07
JP58231875A JPS60124023A (en) 1983-12-07 1983-12-07 Magnetic recording medium

Publications (2)

Publication Number Publication Date
KR850005663A true KR850005663A (en) 1985-08-28
KR890003200B1 KR890003200B1 (en) 1989-08-26

Family

ID=16930388

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019840006584A KR890003200B1 (en) 1983-12-07 1984-10-23 Acicular particulate material containing iron carbide

Country Status (2)

Country Link
JP (1) JPS60124023A (en)
KR (1) KR890003200B1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61154110A (en) * 1984-12-27 1986-07-12 Mitsui Toatsu Chem Inc Acicular particulates of cementite for magnetic recording and manufacture thereof
JPS62217421A (en) * 1986-03-17 1987-09-24 Konishiroku Photo Ind Co Ltd Magnetic recording medium having iron carbide-containing magnetic layer
JPS62217422A (en) * 1986-03-17 1987-09-24 Konishiroku Photo Ind Co Ltd Magnetic recording medium having magnetic layer containing co-deposited iron oxide and iron carbide
JPS6284426A (en) * 1985-10-08 1987-04-17 Konishiroku Photo Ind Co Ltd Magnetic recording medium
JPS6286531A (en) * 1985-10-12 1987-04-21 Tdk Corp Magnetic sheet
JPS6286537A (en) * 1985-10-11 1987-04-21 Tdk Corp Magnetic disk
JPS6285403A (en) * 1985-10-09 1987-04-18 Tdk Corp Magnetic recording medium
JPH04246475A (en) * 1991-01-31 1992-09-02 Daikin Ind Ltd Production of magnetic coating material
JPH05266462A (en) * 1991-11-25 1993-10-15 Tdk Corp Magnetic recording medium
JPH0721550A (en) * 1993-06-30 1995-01-24 Tdk Corp Magnetic recording medium and its production
JP4834852B2 (en) * 2005-01-06 2011-12-14 Ｄｏｗａエレクトロニクス株式会社 Metal magnetic powder and magnetic recording medium using the same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5565304A (en) * 1978-11-13 1980-05-16 Tdk Corp Production of metal magnetic powder

Also Published As

Publication number Publication date
JPS60124023A (en) 1985-07-02
JPS641853B2 (en) 1989-01-12
KR890003200B1 (en) 1989-08-26

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