KR930008734A - Magnetic recording medium and its manufacturing method - Google Patents
Magnetic recording medium and its manufacturing method Download PDFInfo
- Publication number
- KR930008734A KR930008734A KR1019910017562A KR910017562A KR930008734A KR 930008734 A KR930008734 A KR 930008734A KR 1019910017562 A KR1019910017562 A KR 1019910017562A KR 910017562 A KR910017562 A KR 910017562A KR 930008734 A KR930008734 A KR 930008734A
- Authority
- KR
- South Korea
- Prior art keywords
- recording medium
- magnetic recording
- back coat
- carbon black
- group
- Prior art date
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
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/735—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back 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
- G11B5/702—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 bonding agent
- G11B5/7021—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 bonding agent containing a polyurethane or a polyisocyanate
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
비자성 지지체의 한 면에 자성층이 형성되고 다른 면에는 백코오트층이 형성된 자기 기록 매체에 있어서, 평균입경 15nm 내지 30nm, 휘발성분??량 3.0중량% 내지 10.0중량%, pH 2.0 내지 3.0의 카본블랙을 아민기가 함유된 염화비닐 공중합체를 주성분으로 하는 결합제 용액 내에 1차 분산시킨 다음에 폴리우레탄 공중합체 결합제를 첨가하여 2차 분산시켜 제조한 백코오트층용 도료를 도포하여 백코오트층을 형성한 자기 기록 매체와 그의 제조 방법이 제공된다.In the magnetic recording medium having a magnetic layer formed on one side of the nonmagnetic support and a back coat layer formed on the other side, carbon having an average particle diameter of 15 nm to 30 nm, a volatile content of 3.0 wt% to 10.0 wt%, and a pH of 2.0 to 3.0 The backcoating layer was formed by first dispersing black in a binder solution containing a vinyl chloride copolymer containing an amine group as a main component, followed by secondary dispersion by adding a polyurethane copolymer binder to form a backcoat layer. A magnetic recording medium and a manufacturing method thereof are provided.
본 발명에 따라서 제조된 자기 기록 매체는 전자변환 특성, 주행 내구성등이 우수할 뿐만 아니라, 자성층과 백코오트층을 연속적으로 일괄 도포한 후에 카렌다링을 행하더라도 카렌다의 탄성 로울러를 오염시키지 않아 생산성을 크게 향상시킬 수 있다.The magnetic recording medium produced according to the present invention not only has excellent electron conversion characteristics, running durability, etc., but also does not contaminate the elastic roller of the calendar even if calendering is performed after applying the magnetic layer and the back coat layer in a batch. It can greatly improve.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR91017562A KR950011069B1 (en) | 1991-10-07 | 1991-10-07 | Magnetic recording medium and manufacturing method of it |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR91017562A KR950011069B1 (en) | 1991-10-07 | 1991-10-07 | Magnetic recording medium and manufacturing method of it |
Publications (2)
Publication Number | Publication Date |
---|---|
KR930008734A true KR930008734A (en) | 1993-05-21 |
KR950011069B1 KR950011069B1 (en) | 1995-09-27 |
Family
ID=19320894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR91017562A KR950011069B1 (en) | 1991-10-07 | 1991-10-07 | Magnetic recording medium and manufacturing method of it |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR950011069B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101054693B1 (en) * | 2007-11-09 | 2011-08-08 | 제일모직주식회사 | Transparent thermoplastic resin and preparation method thereof |
-
1991
- 1991-10-07 KR KR91017562A patent/KR950011069B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101054693B1 (en) * | 2007-11-09 | 2011-08-08 | 제일모직주식회사 | Transparent thermoplastic resin and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
KR950011069B1 (en) | 1995-09-27 |
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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 | ||
LAPS | Lapse due to unpaid annual fee |