CN1219285C - 磁复制方法和磁复制装置 - Google Patents
磁复制方法和磁复制装置 Download PDFInfo
- Publication number
- CN1219285C CN1219285C CNB021052824A CN02105282A CN1219285C CN 1219285 C CN1219285 C CN 1219285C CN B021052824 A CNB021052824 A CN B021052824A CN 02105282 A CN02105282 A CN 02105282A CN 1219285 C CN1219285 C CN 1219285C
- Authority
- CN
- China
- Prior art keywords
- magnetic
- magnetic field
- duplicate
- track direction
- duplicating
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Images
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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record 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
- G11B5/86—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers
- G11B5/865—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers by contact "printing"
-
- 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
- G11B5/706—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 composition of the magnetic material
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2508—Magnetic discs
- G11B2220/2516—Hard disks
-
- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
- G11B5/59633—Servo formatting
-
- 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
- G11B5/82—Disk carriers
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
Description
β | ΔC/N(dB) | |||||||||
45° | -9.2 | -9.5 | -9.6 | -10.0 | -10.3 | -10.7 | -11.1 | -13.8 | -17.1 | -19.6 |
40° | -8.1 | -8.9 | -9.1 | -8.9 | -9.1 | -9.7 | -10.5 | -12.5 | -14.1 | -16.9 |
35° | -6.3 | -7.7 | -7.4 | -8.7 | -8.9 | -9.1 | -9.5 | -10.9 | -13.5 | -14.7 |
30° | -2.7 | -7.1 | -7.1 | -8.3 | -8.7 | -8.5 | -9.1 | -9.7 | -13.1 | -14.5 |
25° | -1.9 | -2.7 | -6.5 | -7.1 | -8.1 | -8.4 | -8.9 | -11.1 | -12.7 | -14.1 |
20° | -1.3 | -1.7 | -2.7 | -6.8 | -7.8 | -8.1 | -8.5 | -9.1 | -9.5 | -10.4 |
15° | -0.5 | -1.2 | -1.9 | -2.7 | -7.1 | -7.5 | -8.1 | -8.3 | -8.9 | -9.1 |
10° | -0.2 | -0.4 | -1.5 | -1.9 | -2.8 | -6.4 | -7.4 | -7.9 | -8.3 | -8.9 |
5° | -0.1 | -0.2 | -0.7 | -1.8 | -2.1 | -2.5 | -6.9 | -7.1 | -8.1 | -8.7 |
0° | 0 | -0.2 | -0.2 | -0.9 | -1.5 | -2.1 | -2.8 | -6.7 | -7.2 | -8.5 |
0° | 5° | 10° | 15° | 20° | 25° | 30° | 35° | 40° | 45° | |
α |
β | ΔC/N(dB) | |||||||||
45° | -9.3 | -9.7 | -10.1 | -10.5 | -10.8 | -11.2 | -11.3 | -14.3 | -17.4 | -19.1 |
40° | -8.7 | -9.1 | -8.9 | -9.5 | -9.9 | -10.1 | -10.8 | -11.9 | -15.1 | -17.6 |
35° | -7.1 | -8.7 | -8.6 | -9.1 | -9.3 | -9.7 | -10.1 | -11.3 | -11.9 | -13.8 |
30° | -2.8 | -7.9 | -8.3 | -8.1 | -8.4 | -8.3 | -9.3 | -9.7 | -10.5 | -11.1 |
25° | -2.1 | -2.8 | -6.9 | -7.1 | -7.4 | -7.9 | -8.1 | -9.8 | -9.9 | -10.8 |
20° | -1.5 | -2.4 | -3.0 | -6.3 | -6.8 | -7.4 | -7.9 | -8.9 | -9.1 | -9.5 |
15° | -0.9 | -1.4 | -1.6 | -2.7 | -6.4 | -6.7 | -7.5 | -8.2 | -8.8 | -9.6 |
10° | -0.3 | -0.5 | -0.9 | -2.5 | -3.1 | -6.7 | -7.3 | -7.7 | -8.5 | -9.1 |
5° | -0.1 | -0.3 | -0.4 | -2.1 | -2.3 | -3.1 | -6.7 | -7.1 | -7.9 | -8.4 |
0° | 0 | -0.1 | -0.3 | -1.0 | -1.9 | -2.1 | -2.7 | -7.0 | -7.9 | -8.8 |
-0° | -5° | -10° | -15° | -20° | -25° | -30° | -35° | -40° | -45° | |
α |
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP200147809 | 2001-02-23 | ||
JP2001047809A JP4046480B2 (ja) | 2001-02-23 | 2001-02-23 | 磁気転写方法および磁気転写装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1374642A CN1374642A (zh) | 2002-10-16 |
CN1219285C true CN1219285C (zh) | 2005-09-14 |
Family
ID=18909164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB021052824A Expired - Fee Related CN1219285C (zh) | 2001-02-23 | 2002-02-25 | 磁复制方法和磁复制装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7139140B2 (zh) |
EP (1) | EP1235207A3 (zh) |
JP (1) | JP4046480B2 (zh) |
KR (1) | KR20020069135A (zh) |
CN (1) | CN1219285C (zh) |
SG (1) | SG116440A1 (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020187295A1 (en) * | 2001-05-15 | 2002-12-12 | Fuji Photo Film Co., Ltd. | Magnetic transfer master medium |
US7440207B2 (en) * | 2004-10-13 | 2008-10-21 | Fujifilm Corporation | Magnetic-transfer method, magnetic recording medium, and magnetic recording device |
JP2007293964A (ja) * | 2006-04-24 | 2007-11-08 | Hitachi Global Storage Technologies Netherlands Bv | 磁気ディスクの消磁装置及び消磁方法 |
JP5238290B2 (ja) * | 2008-02-28 | 2013-07-17 | 昭和電工株式会社 | 磁気記録媒体の製造方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56143543A (en) * | 1980-04-09 | 1981-11-09 | Matsushita Electric Ind Co Ltd | Magnetic tape transfer system |
JPS57109134A (en) * | 1980-12-26 | 1982-07-07 | Toshiba Corp | Magnetic transferring and recording method |
JPS57138061A (en) * | 1981-02-17 | 1982-08-26 | Matsushita Electric Ind Co Ltd | Magnetic transferring system |
EP0435278B1 (en) * | 1989-12-28 | 1996-07-10 | Matsushita Electric Industrial Co., Ltd. | Bias magnetic field generating apparatus |
JPH0652545A (ja) * | 1992-07-31 | 1994-02-25 | Sony Corp | 磁気転写方法及びディジタル画像信号の磁気記録方法 |
US5796533A (en) * | 1994-03-15 | 1998-08-18 | Kao Corporation | System for magnetic contact duplication |
TW342495B (en) * | 1996-07-22 | 1998-10-11 | Matsushita Electric Ind Co Ltd | Master information carrier, method of producing the same, and method for recording master information signal on magnetic recording medium |
US5991104A (en) * | 1996-11-27 | 1999-11-23 | Seagate Technology, Inc. | Using servowriter medium for quickly written servo-patterns on magnetic media |
US6433944B1 (en) * | 1998-09-25 | 2002-08-13 | Fuji Photo Film Co., Ltd. | Master carrier for magnetic transfer and method for transfer |
JP3344651B2 (ja) * | 1998-10-29 | 2002-11-11 | 松下電器産業株式会社 | マスター情報担体を用いた磁気記録媒体の製造方法 |
US6570724B1 (en) * | 1999-04-26 | 2003-05-27 | Fuji Photo Film Co., Ltd. | Method and apparatus for magnetic transfer |
-
2001
- 2001-02-23 JP JP2001047809A patent/JP4046480B2/ja not_active Expired - Fee Related
-
2002
- 2002-02-18 EP EP02003193A patent/EP1235207A3/en not_active Withdrawn
- 2002-02-19 SG SG200200898A patent/SG116440A1/en unknown
- 2002-02-21 KR KR1020020009219A patent/KR20020069135A/ko not_active Application Discontinuation
- 2002-02-21 US US10/078,535 patent/US7139140B2/en not_active Expired - Fee Related
- 2002-02-25 CN CNB021052824A patent/CN1219285C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7139140B2 (en) | 2006-11-21 |
JP4046480B2 (ja) | 2008-02-13 |
KR20020069135A (ko) | 2002-08-29 |
SG116440A1 (en) | 2005-11-28 |
CN1374642A (zh) | 2002-10-16 |
US20020163747A1 (en) | 2002-11-07 |
EP1235207A3 (en) | 2007-10-24 |
JP2002251723A (ja) | 2002-09-06 |
EP1235207A2 (en) | 2002-08-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: FUJI PHOTO FILM CO., LTD. Free format text: FORMER OWNER: FUJIFILM HOLDINGS CORP. Effective date: 20070803 |
|
C41 | Transfer of patent application or patent right or utility model | ||
C56 | Change in the name or address of the patentee |
Owner name: FUJIFILM HOLDINGS CORP. Free format text: FORMER NAME OR ADDRESS: FUJI PHOTO FILM CO., LTD. |
|
CP03 | Change of name, title or address |
Address after: Tokyo, Japan Patentee after: Fujifilm Corp. Address before: Kanagawa County, Japan Patentee before: FUJIFILM Corp. |
|
TR01 | Transfer of patent right |
Effective date of registration: 20070803 Address after: Tokyo, Japan Patentee after: FUJIFILM Corp. Address before: Tokyo, Japan Patentee before: Fujifilm Corp. |
|
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050914 Termination date: 20130225 |