JPS634272B2 - - Google Patents
Info
- Publication number
- JPS634272B2 JPS634272B2 JP56051957A JP5195781A JPS634272B2 JP S634272 B2 JPS634272 B2 JP S634272B2 JP 56051957 A JP56051957 A JP 56051957A JP 5195781 A JP5195781 A JP 5195781A JP S634272 B2 JPS634272 B2 JP S634272B2
- Authority
- JP
- Japan
- Prior art keywords
- recording
- magnetic
- signal
- magnetic disk
- head
- 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 claims description 268
- 230000008859 change Effects 0.000 claims description 25
- 239000000758 substrate Substances 0.000 description 30
- 239000010410 layer Substances 0.000 description 28
- 238000000034 method Methods 0.000 description 16
- 239000010408 film Substances 0.000 description 14
- 239000011521 glass Substances 0.000 description 13
- 230000001681 protective effect Effects 0.000 description 12
- 230000005684 electric field Effects 0.000 description 9
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 239000004020 conductor Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 230000002411 adverse Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910000702 sendust Inorganic materials 0.000 description 5
- 238000000151 deposition Methods 0.000 description 4
- -1 polyethylene terephthalate Polymers 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 101150054854 POU1F1 gene Proteins 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 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
- 239000002131 composite material Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005421 electrostatic potential Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000001771 vacuum deposition 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)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56051957A JPS57167172A (en) | 1981-04-07 | 1981-04-07 | High density information recording and reproducing system |
GB8209921A GB2096384B (en) | 1981-04-07 | 1982-04-02 | Controlled tracking on grooveless recording medium having magnetic and dielectric properties |
DE19823249480 DE3249480C2 (de) | 1981-04-07 | 1982-04-06 | Aufzeichnungs- und Wiedergabekopf für eine magnetische Aufzeichnungs- und Wiedergabeeinrichtung |
DE3212884A DE3212884C2 (de) | 1981-04-07 | 1982-04-06 | Magnetaufzeichnungsplatte mit magnetischen Auszeichnungsspuren und kapazitiv erfaßbaren Führungsspuren |
US06/367,033 US4639906A (en) | 1981-04-07 | 1982-04-07 | Magnetic recording on tracking controlled grooveless medium having magnetic and capacitance properties |
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 |
---|---|
JPS57167172A JPS57167172A (en) | 1982-10-14 |
JPS634272B2 true JPS634272B2 (US20020167097A1-20021114-C00005.png) | 1988-01-28 |
Family
ID=12901344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56051957A Granted JPS57167172A (en) | 1981-04-07 | 1981-04-07 | High density information recording and reproducing system |
Country Status (4)
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 |
GB2157876B (en) * | 1984-04-09 | 1988-09-21 | Victor Company Of Japan | Capacitance recording disc |
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 |
WO1993014495A1 (en) * | 1992-01-20 | 1993-07-22 | 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 |
DE10084256T1 (de) | 1999-02-22 | 2002-01-31 | Seagate Technology Llc | Vergrabene Servo-bemusterte Medien |
JPWO2008075432A1 (ja) * | 2006-12-21 | 2010-04-08 | 東芝ストレージデバイス株式会社 | 磁気記録媒体及び磁気記録装置 |
US20090010144A1 (en) * | 2007-07-02 | 2009-01-08 | Seagate Technology Llc | Transducer Assembly and Data Storage Apparatus Including the Transducer Assembly |
US20090009906A1 (en) * | 2007-07-02 | 2009-01-08 | Seagate Technology Llc | Transducer Assembly and Data Storage Device 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 |
CA1106061A (en) * | 1977-02-09 | 1981-07-28 | Yoshiyo Wada | Rotary recording medium with intermediate pits |
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 |
---|---|
JPS57167172A (en) | 1982-10-14 |
GB2096384A (en) | 1982-10-13 |
DE3212884C2 (de) | 1987-04-30 |
US4639906A (en) | 1987-01-27 |
DE3212884A1 (de) | 1982-11-04 |
GB2096384B (en) | 1985-04-11 |
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