KR920022218A - 자기 기록 매체 - Google Patents
자기 기록 매체 Download PDFInfo
- Publication number
- KR920022218A KR920022218A KR1019920008481A KR920008481A KR920022218A KR 920022218 A KR920022218 A KR 920022218A KR 1019920008481 A KR1019920008481 A KR 1019920008481A KR 920008481 A KR920008481 A KR 920008481A KR 920022218 A KR920022218 A KR 920022218A
- Authority
- KR
- South Korea
- Prior art keywords
- magnetic
- recording medium
- magnetic recording
- resin binder
- component
- 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
- G11B5/68—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
- G11B5/716—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 two or more magnetic layers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
- Y10T428/257—Iron oxide or aluminum oxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T428/31609—Particulate metal or metal compound-containing
Landscapes
- Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
- Hard Magnetic Materials (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (9)
- 비자성매체상에 장파장기록용자성분과 수지결합제를 포함하는 하측자성층 및 단파장기록용 자성분과 수지결합제를 함유하는 상측자성층을 형성해서 이루어진 자기기록매체에 관한 것으로서, 상기 상측자성층에는 메디안경 0.05∼0.3μm의 연마제가 포함되고 또한 상기 상측 자성층에 포함된 수지결합제 양이 자성분 100중량부에 대해서 2∼12중량부의 범위로 되어있는 것을 특징으로 하는 자기기록매체.
- 제1항에 있어서, 상기 상측자성층의 층두께가 0.05∼0.5μm의 범위인 것을 특징으로 하는 자기기록매체.
- 제1항에 있어서, 상기 수지결합제가 극성기를 갖고 있는 것을 특징으로 하는 자기기록매체.
- 제3항에 있어서, 상기 수지결합제의 극성기가 설폰산 금속염기인 것을 특징으로 하는 자기기록매체.
- 제3항에 있어서, 상기 수지결합제의 극성기의 수가 0.01∼4.0mmo1/g의 범위인 것을 특징으로 자기기록매체.
- 제1항에 있어서, 상기 장파장기록용 자성분이 보자력(Hc)300∼1,000Oe, 포화자화 70emu/cc 이상의 자성분인 것을 특징으로 하는 자기기록매체.
- 제1항에 있어서, 상기 단파장기록용자성분이 보자력(Hc)500∼3,000Oe, 입자 0.05∼0.3μm의 철을 주체로 하는 금속분인 것을 특징으로 하는 자기기록매체.
- 제1항에 있어서, 상기 단파장기록용자성분이 보자력 (Hc) 500∼3,000Oe, 입자 0.01∼0.1μm의 육방정계 페라이트분인 것을 특징으로 하는 자기기록매체.
- 제8항에 있어서, 상기 육방정계 페라이트분의 Fe원자의 일부가 적어도 Nb로 치환되어 있는 것을 특징으로 하는 자기기록매체.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP91-114440 | 1991-05-20 | ||
JP3114440A JPH05135353A (ja) | 1991-05-20 | 1991-05-20 | 磁気記録媒体 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR920022218A true KR920022218A (ko) | 1992-12-19 |
KR970002675B1 KR970002675B1 (ko) | 1997-03-08 |
Family
ID=14637788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920008481A KR970002675B1 (ko) | 1991-05-20 | 1992-05-20 | 자기기록매체 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5470645A (ko) |
EP (1) | EP0515147B1 (ko) |
JP (1) | JPH05135353A (ko) |
KR (1) | KR970002675B1 (ko) |
DE (1) | DE69201404T2 (ko) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5798176A (en) * | 1993-09-13 | 1998-08-25 | Kao Corporation | Magnetic recording medium |
JP2002092854A (ja) * | 2000-09-14 | 2002-03-29 | Fuji Photo Film Co Ltd | 磁気記録媒体及び信号記録方式 |
US7585576B2 (en) * | 2002-12-19 | 2009-09-08 | Sony Corporation | Magnetic recording medium with dual magnetic layers including specific resins |
US20060241700A1 (en) * | 2005-04-26 | 2006-10-26 | Ghanem Raja N | Level crossing detector for detecting noise, sinus rhythm and ventricular fibrillation in subcutaneous or body surface signals |
JP5185200B2 (ja) * | 2009-06-02 | 2013-04-17 | 富士フイルム株式会社 | 六方晶フェライト磁性粉末およびその製造方法、ならびに磁気記録媒体およびその製造方法 |
JP6411981B2 (ja) | 2015-09-30 | 2018-10-24 | 富士フイルム株式会社 | 塗布型磁気記録媒体製造用金属酸化物粒子分散物、塗布型磁気記録媒体の磁性層形成用組成物の製造方法、および塗布型磁気記録媒体の製造方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58205928A (ja) * | 1982-05-25 | 1983-12-01 | Toshiba Corp | 磁気記録媒体 |
JPH0624062B2 (ja) * | 1984-04-06 | 1994-03-30 | 日立マクセル株式会社 | 磁気記録媒体 |
JPS60223018A (ja) * | 1984-04-18 | 1985-11-07 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
JP2631685B2 (ja) * | 1988-02-29 | 1997-07-16 | 富士写真フイルム株式会社 | 磁気記録媒体 |
JPH02249129A (ja) * | 1989-03-23 | 1990-10-04 | Konica Corp | 磁気記録媒体 |
JPH043316A (ja) * | 1990-04-20 | 1992-01-08 | Fuji Photo Film Co Ltd | 磁気記録媒体及びその製造方法 |
-
1991
- 1991-05-20 JP JP3114440A patent/JPH05135353A/ja active Pending
-
1992
- 1992-05-19 EP EP92304533A patent/EP0515147B1/en not_active Expired - Lifetime
- 1992-05-19 DE DE69201404T patent/DE69201404T2/de not_active Expired - Fee Related
- 1992-05-20 KR KR1019920008481A patent/KR970002675B1/ko not_active IP Right Cessation
-
1993
- 1993-11-24 US US08/156,972 patent/US5470645A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5470645A (en) | 1995-11-28 |
DE69201404D1 (de) | 1995-03-23 |
KR970002675B1 (ko) | 1997-03-08 |
DE69201404T2 (de) | 1995-08-31 |
EP0515147B1 (en) | 1995-02-15 |
JPH05135353A (ja) | 1993-06-01 |
EP0515147A1 (en) | 1992-11-25 |
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A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
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Free format text: APPEAL AGAINST DECISION TO DECLINE REFUSAL Free format text: TRIAL NUMBER: 1996201002120; APPEAL AGAINST DECISION TO DECLINE REFUSAL |
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O035 | Opposition [patent]: request for opposition | ||
B701 | Decision to grant | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20071203 Year of fee payment: 11 |
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LAPS | Lapse due to unpaid annual fee |