NL190172B - Magnetisch registreermedium met twee magnetiseerbare lagen. - Google Patents
Magnetisch registreermedium met twee magnetiseerbare lagen.Info
- Publication number
- NL190172B NL190172B NLAANVRAGE8202947,A NL8202947A NL190172B NL 190172 B NL190172 B NL 190172B NL 8202947 A NL8202947 A NL 8202947A NL 190172 B NL190172 B NL 190172B
- Authority
- NL
- Netherlands
- Prior art keywords
- record medium
- magnetic record
- magnetisable
- layers
- magnetisable layers
- 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
- G11B5/714—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
-
- 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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11390081 | 1981-07-21 | ||
JP56113900A JPS5817539A (ja) | 1981-07-21 | 1981-07-21 | 磁気記録媒体 |
Publications (3)
Publication Number | Publication Date |
---|---|
NL8202947A NL8202947A (nl) | 1983-02-16 |
NL190172B true NL190172B (nl) | 1993-06-16 |
NL190172C NL190172C (nl) | 1993-11-16 |
Family
ID=14623967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NLAANVRAGE8202947,A NL190172C (nl) | 1981-07-21 | 1982-07-21 | Magnetisch registreermedium met twee magnetiseerbare lagen. |
Country Status (7)
Country | Link |
---|---|
US (1) | US4506000A (nl) |
JP (1) | JPS5817539A (nl) |
CA (1) | CA1179058A (nl) |
DE (1) | DE3226937A1 (nl) |
FR (1) | FR2510291B1 (nl) |
GB (1) | GB2101911B (nl) |
NL (1) | NL190172C (nl) |
Families Citing this family (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56106923A (en) * | 1980-01-31 | 1981-08-25 | Asahi Chem Ind Co Ltd | Preparation of flame-retardant polyamide |
JPS56106924A (en) * | 1980-01-31 | 1981-08-25 | Asahi Chem Ind Co Ltd | Preparation of flame-retardant polyamide |
JPS56127620A (en) * | 1980-02-19 | 1981-10-06 | Asahi Chem Ind Co Ltd | Preparation of polyamide composition containing melamine cyanurate |
JPS58122623A (ja) * | 1982-01-14 | 1983-07-21 | Sony Corp | 円盤状磁気記録媒体 |
DE3381028D1 (de) * | 1982-07-21 | 1990-02-01 | Basf Ag | Magnetische aufzeichnungstraeger. |
JPS5979432A (ja) * | 1982-10-29 | 1984-05-08 | Konishiroku Photo Ind Co Ltd | 磁気記録媒体 |
JPS59119531A (ja) * | 1982-12-25 | 1984-07-10 | Tdk Corp | 磁気記録媒体 |
JPH0654536B2 (ja) * | 1983-02-04 | 1994-07-20 | 富士写真フイルム株式会社 | 磁気記録媒体 |
JPS59186125A (ja) * | 1983-04-08 | 1984-10-22 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
JPS6036603A (ja) * | 1983-08-10 | 1985-02-25 | Dainippon Ink & Chem Inc | 比表面積の小さな微小金属磁性粉およびその製造方法 |
JPS6052924A (ja) * | 1983-09-02 | 1985-03-26 | Tdk Corp | 磁気記録媒体 |
JPS60124025A (ja) * | 1983-12-06 | 1985-07-02 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
EP0150498B1 (en) * | 1984-01-14 | 1988-09-21 | Bayer Ag | Perpendicular magnetic recording medium |
JPS60187931A (ja) * | 1984-03-08 | 1985-09-25 | Fuji Photo Film Co Ltd | 磁気記録媒体の製造方法 |
DE3418673A1 (de) * | 1984-05-19 | 1985-11-21 | Basf Ag, 6700 Ludwigshafen | Flexible magnetische aufzeichnungstraeger |
JPH0715744B2 (ja) * | 1985-08-13 | 1995-02-22 | 日立マクセル株式会社 | 磁気記録媒体 |
JPH0715750B2 (ja) * | 1986-03-31 | 1995-02-22 | 富士写真フイルム株式会社 | 磁気記録媒体 |
JPS63201914A (ja) * | 1987-02-18 | 1988-08-22 | Hitachi Ltd | 磁気記録媒体 |
JP2581570B2 (ja) * | 1987-10-19 | 1997-02-12 | 富士写真フイルム株式会社 | ビデオ用磁気記録媒体 |
JP2819029B2 (ja) * | 1988-09-19 | 1998-10-30 | コニカ株式会社 | 磁気記録媒体 |
JP2684393B2 (ja) * | 1988-10-19 | 1997-12-03 | 富士写真フイルム株式会社 | 磁気記録媒体 |
EP0373563A3 (en) * | 1988-12-12 | 1991-09-18 | Konica Corporation | Magnetic recording medium |
JP2640268B2 (ja) * | 1989-03-14 | 1997-08-13 | 富士写真フイルム株式会社 | 磁気記録媒体 |
JPH0349031A (ja) * | 1989-07-18 | 1991-03-01 | Tdk Corp | 磁気記録媒体およびその製造方法 |
JPH0362311A (ja) * | 1989-07-31 | 1991-03-18 | Konica Corp | 磁気記録媒体 |
JP2654195B2 (ja) * | 1989-08-22 | 1997-09-17 | 富士写真フイルム株式会社 | 磁気記録媒体 |
EP0457299B1 (en) * | 1990-05-15 | 1994-09-21 | Daikin Industries, Limited | Acicular metal iron fine particles, process for preparing same, magnetic coating composition and magnetic recording medium containing same |
JP2702268B2 (ja) * | 1990-09-27 | 1998-01-21 | 富士写真フイルム株式会社 | 磁気記録媒体 |
US6631242B1 (en) * | 1990-10-31 | 2003-10-07 | Sony Corporation | Apparatus for recording and reproducing digital picture data |
DE4142052C2 (de) * | 1990-12-20 | 1999-07-15 | Fuji Photo Film Co Ltd | Magnetaufzeichnungsmedium |
US5480713A (en) * | 1990-12-28 | 1996-01-02 | Konica Corporation | Magnetic recording medium |
US5645917A (en) * | 1991-04-25 | 1997-07-08 | Fuji Photo Film Co., Ltd. | Magnetic recording medium |
US5827600A (en) * | 1991-01-21 | 1998-10-27 | Fuji Photo Film Co., Ltd. | Magnetic recording medium |
JP3104364B2 (ja) * | 1991-03-15 | 2000-10-30 | ソニー株式会社 | ディジタル画像信号の磁気記録方法 |
JP2614154B2 (ja) * | 1991-04-19 | 1997-05-28 | 富士写真フイルム株式会社 | 磁気記録媒体 |
JPH0581644A (ja) * | 1991-09-24 | 1993-04-02 | Tdk Corp | 磁気記録媒体 |
JPH05266462A (ja) * | 1991-11-25 | 1993-10-15 | Tdk Corp | 磁気記録媒体 |
US5230818A (en) * | 1991-12-20 | 1993-07-27 | Eastman Kodak Company | Coating compositions for master media for anhysteretic recording |
US5605733A (en) * | 1992-01-22 | 1997-02-25 | Hitachi, Ltd. | Magnetic recording medium, method for its production, and system for its use |
US5324603A (en) * | 1992-04-17 | 1994-06-28 | At&T Bell Laboratories | Method for forming an image on a magnetic composite medium and apparatus therefor |
US6579592B1 (en) | 1996-11-29 | 2003-06-17 | Fuji Photo Film Co., Ltd | Magnetic recording tape with controlled Hc and magnetic flux/unit area value and controlled Cl/Fe intensity |
KR20010029493A (ko) | 1997-02-10 | 2001-04-06 | 무네유키 가코우 | 자기기록매체 |
US6432503B2 (en) | 1997-03-31 | 2002-08-13 | Fuji Photo Film Co., Ltd. | Magnetic recording medium |
EP0889464B1 (en) | 1997-06-30 | 2003-09-03 | Fuji Photo Film Co., Ltd. | Magnetic recording medium |
US6096406A (en) * | 1997-07-15 | 2000-08-01 | Fuji Photo Film Co., Ltd. | Magnetic recording medium |
JPH11185240A (ja) | 1997-10-14 | 1999-07-09 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
US6444290B1 (en) | 1998-06-11 | 2002-09-03 | Fuji Photo Film Co., Ltd. | Magnetic recording medium comprising a support containing a specific size filler and having a specific concentration of surface protrusions |
JP2000011352A (ja) | 1998-06-22 | 2000-01-14 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
DE19838799A1 (de) * | 1998-08-26 | 2000-03-02 | Emtec Magnetics Gmbh | Magnetischer Aufzeichnungsträger mit hoher Aufzeichnungsdichte |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE382274B (sv) * | 1971-02-26 | 1976-01-19 | Minnesota Mining & Mfg | Magnetiskt inspelningsband och sett att framstella detsamma. |
JPS5617734B2 (nl) * | 1973-07-19 | 1981-04-24 | ||
JPS5630608B2 (nl) * | 1973-08-27 | 1981-07-16 | ||
JPS5147402A (nl) * | 1974-10-21 | 1976-04-23 | Fuji Photo Film Co Ltd | |
JPS5843815B2 (ja) * | 1975-10-23 | 1983-09-29 | 富士写真フイルム株式会社 | ジキキロクテ−プ |
JPS5816248B2 (ja) * | 1975-11-05 | 1983-03-30 | 富士写真フイルム株式会社 | シンキナジキキロクタイ |
JPS5354002A (en) * | 1976-10-26 | 1978-05-17 | Sony Corp | Magnetic recording medium |
FR2382325A1 (fr) * | 1977-03-02 | 1978-09-29 | Kodak Pathe | Produit comprenant une couche d'enregistrement magnetique transparente |
JPS545705A (en) * | 1977-06-16 | 1979-01-17 | Fuji Photo Film Co Ltd | Double layer magnetic recording medium |
JPS5421304A (en) * | 1977-07-18 | 1979-02-17 | Fuji Photo Film Co Ltd | Double layer magnetic recording tape |
JPS5448504A (en) * | 1977-09-21 | 1979-04-17 | Tdk Corp | Magnetic recording medium |
DE2801452C2 (de) * | 1978-01-13 | 1985-03-28 | Agfa-Gevaert Ag, 5090 Leverkusen | Magnetisches Aufzeichnungsmaterial |
JPS54159203A (en) * | 1978-06-07 | 1979-12-15 | Fuji Photo Film Co Ltd | Audio magnetic recording tape |
JPS5769528A (en) * | 1980-10-14 | 1982-04-28 | Tdk Corp | Magnetic recording medium |
-
1981
- 1981-07-21 JP JP56113900A patent/JPS5817539A/ja active Granted
-
1982
- 1982-07-14 CA CA000407247A patent/CA1179058A/en not_active Expired
- 1982-07-19 DE DE19823226937 patent/DE3226937A1/de active Granted
- 1982-07-19 GB GB08220850A patent/GB2101911B/en not_active Expired
- 1982-07-21 FR FR8212754A patent/FR2510291B1/fr not_active Expired
- 1982-07-21 NL NLAANVRAGE8202947,A patent/NL190172C/nl not_active IP Right Cessation
-
1983
- 1983-02-09 US US06/465,356 patent/US4506000A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
NL8202947A (nl) | 1983-02-16 |
JPH036575B2 (nl) | 1991-01-30 |
CA1179058A (en) | 1984-12-04 |
FR2510291B1 (fr) | 1989-06-02 |
DE3226937A1 (de) | 1983-02-10 |
US4506000A (en) | 1985-03-19 |
FR2510291A1 (fr) | 1983-01-28 |
JPS5817539A (ja) | 1983-02-01 |
GB2101911A (en) | 1983-01-26 |
NL190172C (nl) | 1993-11-16 |
DE3226937C2 (nl) | 1991-02-21 |
GB2101911B (en) | 1984-08-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A85 | Still pending on 85-01-01 | ||
BA | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
V4 | Discontinued because of reaching the maximum lifetime of a patent |
Free format text: 20020721 |