DE3212884C2 - Magnetaufzeichnungsplatte mit magnetischen Auszeichnungsspuren und kapazitiv erfaßbaren Führungsspuren - Google Patents
Magnetaufzeichnungsplatte mit magnetischen Auszeichnungsspuren und kapazitiv erfaßbaren FührungsspurenInfo
- Publication number
- DE3212884C2 DE3212884C2 DE3212884A DE3212884A DE3212884C2 DE 3212884 C2 DE3212884 C2 DE 3212884C2 DE 3212884 A DE3212884 A DE 3212884A DE 3212884 A DE3212884 A DE 3212884A DE 3212884 C2 DE3212884 C2 DE 3212884C2
- Authority
- DE
- Germany
- Prior art keywords
- magnetic recording
- pits
- track
- tracks
- recording disk
- 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
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 60
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 11
- 239000003302 ferromagnetic material Substances 0.000 abstract description 4
- 239000003989 dielectric material Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 24
- 238000001514 detection method Methods 0.000 description 9
- 239000003570 air Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- -1 Polyethylene terephthalate Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910000702 sendust Inorganic materials 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/30—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture with provision for auxiliary signals
- G11B23/34—Signal means additional to the main recording track, e.g. photoelectric sensing of sprocket holes for timing
-
- 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
-
- 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
- G11B5/825—Disk carriers flexible discs
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Magnetic Heads (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56051957A JPS57167172A (en) | 1981-04-07 | 1981-04-07 | High density information recording and reproducing system |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3212884A1 DE3212884A1 (de) | 1982-11-04 |
DE3212884C2 true DE3212884C2 (de) | 1987-04-30 |
Family
ID=12901344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3212884A Expired DE3212884C2 (de) | 1981-04-07 | 1982-04-06 | Magnetaufzeichnungsplatte mit magnetischen Auszeichnungsspuren und kapazitiv erfaßbaren Führungsspuren |
Country Status (4)
Country | Link |
---|---|
US (1) | US4639906A (US07576130-20090818-C00114.png) |
JP (1) | JPS57167172A (US07576130-20090818-C00114.png) |
DE (1) | DE3212884C2 (US07576130-20090818-C00114.png) |
GB (1) | GB2096384B (US07576130-20090818-C00114.png) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4556597A (en) * | 1983-08-22 | 1985-12-03 | International Business Machines Corporation | Ion doped servo pattern for magnetic recording disk |
JPS60109018A (ja) * | 1983-11-18 | 1985-06-14 | Nec Home Electronics Ltd | 垂直磁気記録再生装置 |
DE3512715A1 (de) * | 1984-04-09 | 1985-10-24 | Victor Company Of Japan, Ltd., Yokohama, Kanagawa | Verfahren und vorrichtung zur aufzeichnung und wiedergabe von signalen mittels aufzeichnungsplatten |
US4648087A (en) * | 1984-06-28 | 1987-03-03 | International Business Machines Corporation | Capacitive sensing employing thin film inductors |
JPS62137710A (ja) * | 1985-12-10 | 1987-06-20 | Victor Co Of Japan Ltd | 電極付き磁気ヘツド |
JPH0777015B2 (ja) * | 1987-01-23 | 1995-08-16 | 松下電器産業株式会社 | 磁気デイスク装置 |
US4823205A (en) * | 1988-02-08 | 1989-04-18 | International Business Machines Corporation | Capacitive sensor for head positioning in magnetic recording disk files |
US5083226A (en) * | 1988-09-22 | 1992-01-21 | Hitachi, Ltd. | Magnetic disk drive |
US4935835A (en) * | 1988-11-10 | 1990-06-19 | Insite Peripherals, Inc. | Magnetic media containing reference feature and methods for referencing magnetic head position to the reference feature |
US6600631B1 (en) * | 1989-11-27 | 2003-07-29 | Censtor Corp. | Transducer/flexure/conductor structure for electromagnetic read/write system |
JP2784829B2 (ja) * | 1990-02-06 | 1998-08-06 | ソニー株式会社 | 記録信号磁界発生装置 |
US5103362A (en) * | 1990-03-13 | 1992-04-07 | International Business Machines Corporation | Method of electrostatically sensing track position information for magnetic recording medium |
JPH03290816A (ja) * | 1990-04-06 | 1991-12-20 | Sony Corp | 記録再生装置及びその記録媒体 |
JP3166181B2 (ja) * | 1991-02-28 | 2001-05-14 | 株式会社日立製作所 | 磁気記憶装置 |
EP0576680B1 (en) * | 1992-01-20 | 2004-03-31 | Fujitsu Limited | Magnetic head assembly, its manufacture, and magnetic disc device |
JPH08249602A (ja) * | 1995-03-06 | 1996-09-27 | Mitsubishi Electric Corp | 磁気式記憶再生方法ならびにそれに用いる磁気再生装置、磁気記憶媒体およびその製法 |
US5872676A (en) * | 1996-01-02 | 1999-02-16 | International Business Machines Corporation | Method and apparatus for positioning a dual element magnetoresistive head using thermal signals |
US6775100B1 (en) * | 1997-05-05 | 2004-08-10 | Seagate Technology Llc | Laser assisted track width definition and radial control with magnetic recording |
US6614608B1 (en) | 1999-02-22 | 2003-09-02 | Seagate Technology Llc | Buried servo patterned media |
WO2008075432A1 (ja) * | 2006-12-21 | 2008-06-26 | Fujitsu Limited | 磁気記録媒体及び磁気記録装置 |
US20090009906A1 (en) * | 2007-07-02 | 2009-01-08 | Seagate Technology Llc | Transducer Assembly and Data Storage Device Including the Transducer Assembly |
US20090010144A1 (en) * | 2007-07-02 | 2009-01-08 | Seagate Technology Llc | Transducer Assembly and Data Storage Apparatus Including the Transducer Assembly |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB850895A (en) * | 1958-01-29 | 1960-10-12 | Protona Produktionsgeselischaf | Stop means for reversible web driving mechanisms |
US3593331A (en) * | 1969-01-31 | 1971-07-13 | Ncr Co | Magnetic disc calibration track with diminishing apertures |
US3886052A (en) * | 1970-07-20 | 1975-05-27 | Digital Equipment Corp | Method of making a magnetic recording disc |
DE2354506A1 (de) * | 1973-10-31 | 1975-05-07 | Ibm Deutschland | Magnetplattenspeicher mit besonderen von den datenspuren getrennten auflagespuren fuer magnetkoepfe und ein verfahren zur herstellung der plattenspeicheranordnung |
US4322836A (en) * | 1976-04-08 | 1982-03-30 | Victor Company Of Japan, Ltd. | High density recording system using side-by side information and servo tracks |
GB1585546A (en) * | 1976-04-08 | 1981-03-04 | Victor Company Of Japan | Information signal recording system |
NL173797C (nl) * | 1977-02-09 | 1984-03-01 | Victor Company Of Japan | Informatiesignaalregistreermedium met een plat oppervlak, en registreerinrichting voor een dergelijk medium. |
JPS5921104B2 (ja) * | 1977-03-08 | 1984-05-17 | 日本ビクター株式会社 | 情報記録媒体再生装置におけるトラッキングサ−ボ装置 |
US4160268A (en) | 1977-03-31 | 1979-07-03 | Victor Company Of Japan, Ltd. | Signal pickup device with tracking control and jitter compensation for a video disc |
JPS6049971B2 (ja) * | 1978-04-27 | 1985-11-06 | 松下電器産業株式会社 | 磁気記録媒体 |
GB2046480A (en) * | 1979-03-27 | 1980-11-12 | Tokyo Shibaura Electric Co | Tracking servo and playback system for video disc |
JPS56117346A (en) * | 1980-02-21 | 1981-09-14 | Pioneer Electronic Corp | Information recording medium |
DE3114248C2 (de) * | 1980-04-10 | 1984-12-06 | Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa | Magnetischer Aufzeichnungsträger mit einer Schutzschicht |
-
1981
- 1981-04-07 JP JP56051957A patent/JPS57167172A/ja active Granted
-
1982
- 1982-04-02 GB GB8209921A patent/GB2096384B/en not_active Expired
- 1982-04-06 DE DE3212884A patent/DE3212884C2/de not_active Expired
- 1982-04-07 US US06/367,033 patent/US4639906A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE3212884A1 (de) | 1982-11-04 |
GB2096384B (en) | 1985-04-11 |
US4639906A (en) | 1987-01-27 |
JPS634272B2 (US07576130-20090818-C00114.png) | 1988-01-28 |
GB2096384A (en) | 1982-10-13 |
JPS57167172A (en) | 1982-10-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8125 | Change of the main classification |
Ipc: G11B 3/34 |
|
8172 | Supplementary division/partition in: |
Ref country code: DE Ref document number: 3249480 Format of ref document f/p: P |
|
Q171 | Divided out to: |
Ref country code: DE Ref document number: 3249480 |
|
8125 | Change of the main classification |
Ipc: G11B 21/10 |
|
AH | Division in |
Ref country code: DE Ref document number: 3249480 Format of ref document f/p: P |
|
AH | Division in |
Ref country code: DE Ref document number: 3249480 Format of ref document f/p: P |
|
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |