KR950703779A - 자기 기록 매체용 이면 피복물(Backside Coating for Magnetic Recording Medium) - Google Patents
자기 기록 매체용 이면 피복물(Backside Coating for Magnetic Recording Medium) Download PDFInfo
- Publication number
- KR950703779A KR950703779A KR1019950700972A KR19950700972A KR950703779A KR 950703779 A KR950703779 A KR 950703779A KR 1019950700972 A KR1019950700972 A KR 1019950700972A KR 19950700972 A KR19950700972 A KR 19950700972A KR 950703779 A KR950703779 A KR 950703779A
- Authority
- KR
- South Korea
- Prior art keywords
- recording medium
- magnetic recording
- polyurethane resin
- coating
- backside coating
- 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
- G11B5/7356—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 comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2
-
- 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
- G11B5/73—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
- G11B5/739—Magnetic recording media substrates
- G11B5/73923—Organic polymer substrates
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
본 발명은 카본 블랙, 니트로셀룰로오즈 수지 및 폴리우레탄 수지를 함유한 이면 피복물에 있어서, 규정된 필요 조건을 만족하는 폴리우레탄 수지를 사용함으로써 피복물의 시간경과에 따른 분산 안정성을 현저히 향상시키고, 40일 이상 동안 카본 블랙의 응결 발생을 방지하는 것에 관한 것이다.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (2)
- 카본 블랙, 니트로셀룰로오즈 수지 및 폴리우레탄 수지를 함유한 자기 기록 매체용 이면 피복물에 있어서, 상기 폴리우레탄 수지가 지방족 폴리에스테르 디올 또는 지방족 폴레에테르 디올에서 유도되고, 이들의 주쇄 내에 설폰산 금속 염 원자단을 함유하고, 상기 폴리우레탄 수지의 Tg가 -23℃인 이면 피복물.
- 상기 제1항의 피복물로 형성된 이면 피복층을 구비하는 것을 특징으로 하는 자기 기록 매체.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP92-296982 | 1992-11-06 | ||
JP4296982A JPH06195678A (ja) | 1992-11-06 | 1992-11-06 | 磁気記録媒体用バックコート塗料 |
PCT/US1993/010083 WO1994011866A1 (en) | 1992-11-06 | 1993-10-21 | Backside coating for magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
KR950703779A true KR950703779A (ko) | 1995-09-20 |
Family
ID=17840725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950700972A KR950703779A (ko) | 1992-11-06 | 1993-10-21 | 자기 기록 매체용 이면 피복물(Backside Coating for Magnetic Recording Medium) |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0667979B1 (ko) |
JP (1) | JPH06195678A (ko) |
KR (1) | KR950703779A (ko) |
CN (1) | CN1042038C (ko) |
DE (1) | DE69304207T2 (ko) |
WO (1) | WO1994011866A1 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19945400A1 (de) * | 1999-09-22 | 2001-04-05 | Emtec Magnetics Gmbh | Blockcopolymeres Polyurethan, Verfahren zu dessen Herstellung sowie daraus hergestellte Bindemittel und Formkörper |
JP2007141304A (ja) * | 2005-11-16 | 2007-06-07 | Fujifilm Corp | 磁気記録媒体 |
CN103509465A (zh) * | 2013-09-23 | 2014-01-15 | 丹阳市永生涂料有限公司 | 一种1k哑黑面漆 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6095722A (ja) * | 1983-10-28 | 1985-05-29 | Sony Corp | 磁気記録媒体 |
JPS61145726A (ja) * | 1984-12-19 | 1986-07-03 | Matsushita Electric Ind Co Ltd | 磁気記録媒体 |
JPH02134720A (ja) * | 1988-11-14 | 1990-05-23 | Konica Corp | 非磁性粉を含有するバックコート層を設けた磁気記録媒体 |
EP0464827B1 (en) * | 1990-07-05 | 1995-04-19 | Matsushita Electric Industrial Co., Ltd. | Magnetic recording medium and method for making the same |
-
1992
- 1992-11-06 JP JP4296982A patent/JPH06195678A/ja active Pending
-
1993
- 1993-10-21 KR KR1019950700972A patent/KR950703779A/ko active IP Right Grant
- 1993-10-21 EP EP94900368A patent/EP0667979B1/en not_active Expired - Lifetime
- 1993-10-21 DE DE69304207T patent/DE69304207T2/de not_active Expired - Fee Related
- 1993-10-21 WO PCT/US1993/010083 patent/WO1994011866A1/en active IP Right Grant
- 1993-11-06 CN CN93114335A patent/CN1042038C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1042038C (zh) | 1999-02-10 |
JPH06195678A (ja) | 1994-07-15 |
EP0667979B1 (en) | 1996-08-21 |
CN1087362A (zh) | 1994-06-01 |
DE69304207T2 (de) | 1997-04-10 |
WO1994011866A1 (en) | 1994-05-26 |
DE69304207D1 (de) | 1996-09-26 |
EP0667979A1 (en) | 1995-08-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
NORF | Unpaid initial registration fee |