KR890007233A - 자기 기록매체 - Google Patents

자기 기록매체 Download PDF

Info

Publication number
KR890007233A
KR890007233A KR1019880013828A KR880013828A KR890007233A KR 890007233 A KR890007233 A KR 890007233A KR 1019880013828 A KR1019880013828 A KR 1019880013828A KR 880013828 A KR880013828 A KR 880013828A KR 890007233 A KR890007233 A KR 890007233A
Authority
KR
South Korea
Prior art keywords
magnetic
pattern
magnetic recording
recording medium
less
Prior art date
Application number
KR1019880013828A
Other languages
English (en)
Other versions
KR920004221B1 (ko
Inventor
미노루 후지다
요시히꼬 나까하라
겐지 수가야
Original Assignee
후꾸오까 고로
교오도인사쯔 가부시기가이샤
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
Priority claimed from JP62266257A external-priority patent/JPH0823931B2/ja
Priority claimed from JP63031775A external-priority patent/JP2543938B2/ja
Priority claimed from JP63031774A external-priority patent/JPH01208725A/ja
Application filed by 후꾸오까 고로, 교오도인사쯔 가부시기가이샤 filed Critical 후꾸오까 고로
Publication of KR890007233A publication Critical patent/KR890007233A/ko
Application granted granted Critical
Publication of KR920004221B1 publication Critical patent/KR920004221B1/ko

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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/80—Card carriers
    • 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
    • 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
    • G11B5/714—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 dimension of the magnetic particles

Landscapes

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

Abstract

내용 없음

Description

자기 기록매체
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 2도는 본 발명의 우선적인 실시예를 나타내는 자기기록매체의 개략 사시 도.
제3도는 제2도의 자기기록매체를 판독하는 방법을 나타내는 도식도.

Claims (6)

  1. 자기기록매체는 10미크론 이하의 입자크기와 30에르스텟 이하의 보자력을 지니는 자기물질의 자기인쇄 패턴을 지니는 것을 특징으로 하는 자기기록매체.
  2. 제 1항에 있어서, 상기 자기물질 입자는 구형이거나 또는 비늘모양 측면을 지니는 것을 특징으로 하는 자기기록매체.
  3. 자기기록 매체는 1mm 이하의 폭을 지니는 자기패턴을 지니는 자기패턴을 지니는 것을 특징으로 하는 자기 기록매체.
  4. 자기기록매체는 1mm 이하의 폭을 지니는 제 1자기패턴 및 1mm 또는 그 이상의 폭을 지니는 제 2자기 패턴을 지니는 것을 특징으로 하는 자기기록매체.
  5. 제 4항에 있어서, 2진 정보는 제1 및 제 2자기턴에 의해 기록되는 것을 특징으로 하는 자기기록매체.
  6. 제 4항 또는 제 5항에 있어서, 가상패턴 또는 비자기물질의 패턴이 제1 및 제 2자기인쇄패턴에 혼합되는 것을 특징으로 하는 자기기록매체.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880013828A 1987-10-23 1988-10-22 자기기록매체 KR920004221B1 (ko)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP266257 1987-10-23
JP62-266257 1987-10-23
JP62266257A JPH0823931B2 (ja) 1987-10-23 1987-10-23 磁気記録媒体
JP63-31775 1988-02-16
JP31775 1988-02-16
JP63-31774 1988-02-16
JP63031775A JP2543938B2 (ja) 1988-02-16 1988-02-16 磁気記録媒体
JP63031774A JPH01208725A (ja) 1988-02-16 1988-02-16 磁気記録媒体
JP31774 1988-02-16

Publications (2)

Publication Number Publication Date
KR890007233A true KR890007233A (ko) 1989-06-19
KR920004221B1 KR920004221B1 (ko) 1992-05-30

Family

ID=27287462

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880013828A KR920004221B1 (ko) 1987-10-23 1988-10-22 자기기록매체

Country Status (4)

Country Link
EP (1) EP0313063A3 (ko)
KR (1) KR920004221B1 (ko)
AU (1) AU608656B2 (ko)
CA (1) CA1333092C (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6372338B1 (en) * 1997-12-12 2002-04-16 Eastman Kodak Company Spherical magnetic particles for magnetic recording media
JP2009502004A (ja) * 2005-07-21 2009-01-22 エヌエックスピー ビー ヴィ 磁気ｒｏｍ情報媒体
WO2010141336A1 (en) 2009-06-01 2010-12-09 Lord Corporation High durability magnetorheological fluids

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1488483A (en) * 1973-10-23 1977-10-12 Emi Ltd Credit cards and other security documents
GB1601362A (en) * 1978-05-09 1981-10-28 Emi Ltd Security elements and secure documents
JPS5821464A (ja) * 1981-07-29 1983-02-08 Matsushita Electric Ind Co Ltd 記録用磁性インク
EP0150498B1 (en) * 1984-01-14 1988-09-21 Bayer Ag Perpendicular magnetic recording medium

Also Published As

Publication number Publication date
EP0313063A2 (en) 1989-04-26
EP0313063A3 (en) 1990-09-12
KR920004221B1 (ko) 1992-05-30
AU608656B2 (en) 1991-04-11
AU2412988A (en) 1989-04-27
CA1333092C (en) 1994-11-15

Similar Documents

Publication Publication Date Title
KR890001026A (ko) 자기헤드의 제조방법
DE3852633T2 (de) Einrichtung zur Wiedergabe und Verarbeitung von Bildinformation aus einem Aufzeichnungsträger.
KR910005236A (ko) 박막 자기헤드
EP0402065A3 (en) Magnetic recording medium
KR850005664A (ko) 2층 피복식 수직 자기 기록매체
KR840005875A (ko) 자기 기록매체
KR890700481A (ko) 자기 기록매체
KR860002788A (ko) 자기 기록 매체
KR910001711A (ko) 자기기록매체와 그 제조방법 및 사용방법
KR890007233A (ko) 자기 기록매체
KR850006101A (ko) 자기 기록 매체
GB1529937A (en) Magnetic recording
KR900016948A (ko) 자기기록 장치
KR910005237A (ko) 자기 기록매체
KR900003816A (ko) 부동식 자기헤드
KR910013082A (ko) 자기 기록 매체(磁氣記錄媒體)
KR880004430A (ko) 복합형 자기헤드
KR890005662A (ko) 자기 기록 매체
KR860003585A (ko) 자기 기록 매체
JPS61143868U (ko)
KR920001449A (ko) 자기기록매체와 그 제조방법 및 그 매체를 사용한 자기기록재생장치
KR930014308A (ko) 내구성이 향상된 마그네틱 매질
JP2734561B2 (ja) 磁気記録カード
KR880004439A (ko) 자기 기록 매체
SU801065A1 (ru) Носитель магнитной записи циф-РОВОй иНфОРМАции

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20050524

Year of fee payment: 14

LAPS Lapse due to unpaid annual fee