FR2191187A1 - - Google Patents
Info
- Publication number
- FR2191187A1 FR2191187A1 FR7224037A FR7224037A FR2191187A1 FR 2191187 A1 FR2191187 A1 FR 2191187A1 FR 7224037 A FR7224037 A FR 7224037A FR 7224037 A FR7224037 A FR 7224037A FR 2191187 A1 FR2191187 A1 FR 2191187A1
- Authority
- FR
- France
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/16—Layers for recording by changing the magnetic properties, e.g. for Curie-point-writing
-
- 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
- G11B5/62—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
-
- 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
- G11B5/743—Patterned record carriers, wherein the magnetic recording layer is patterned into magnetic isolated data islands, e.g. discrete tracks
-
- 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
-
- 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
- G11B5/855—Coating only part of a support with a magnetic layer
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
- Photoreceptors In Electrophotography (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15720171A | 1971-06-28 | 1971-06-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2191187A1 true FR2191187A1 (US07906523-20110315-C00004.png) | 1974-02-01 |
| FR2191187B1 FR2191187B1 (US07906523-20110315-C00004.png) | 1976-01-16 |
Family
ID=22562741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7224037A Expired FR2191187B1 (US07906523-20110315-C00004.png) | 1971-06-28 | 1972-06-27 |
Country Status (6)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2463475A1 (fr) * | 1979-08-14 | 1981-02-20 | Transac Dev Transact Automat | Procede de realisation d'une piste magnetique presentant des caracteristiques physiques variables le long de la piste |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63102741U (US07906523-20110315-C00004.png) * | 1986-12-19 | 1988-07-04 | ||
| 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 |
| DE69021741T2 (de) * | 1989-01-11 | 1996-04-18 | Hitachi Ltd | Magnetischer Aufzeichnungsträger und Verfahren zum magnetischen Aufzeichnen und Wiedergeben von Daten. |
| US5220476A (en) * | 1990-11-02 | 1993-06-15 | Godwin Jimmy D | Non-erasable magnetic data storage method |
| US5858474A (en) * | 1996-02-20 | 1999-01-12 | Seagate Technology, Inc. | Method of forming a magnetic media |
| US5991104A (en) | 1996-11-27 | 1999-11-23 | Seagate Technology, Inc. | Using servowriter medium for quickly written servo-patterns on magnetic media |
| US6086961A (en) * | 1998-03-09 | 2000-07-11 | Seagate Technology, Inc. | Quickly written servo-patterns for magnetic media including removing |
| US7036209B1 (en) * | 2002-07-01 | 2006-05-02 | Seagate Technology Llc | Method of simultaneously forming magnetic transition patterns of a dual side recording medium |
| US7369369B1 (en) | 2003-04-03 | 2008-05-06 | Meyer Dallas W | Bidirectional micropositioning recording head for a magnetic storage device |
| US7538983B1 (en) | 2003-07-29 | 2009-05-26 | Meyer Dallas W | Micropositioner recording head for a magnetic storage device |
| JP2006031856A (ja) * | 2004-07-16 | 2006-02-02 | Toshiba Corp | 垂直磁気記録用のパターンドディスク媒体及び同媒体を搭載した磁気ディスクドライブ |
| US8279559B1 (en) | 2009-01-02 | 2012-10-02 | Meyer Dallas W | Process for creating discrete track magnetic recording media including an apparatus having a stylus selectively applying stress to a surface of the recording media |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2793135A (en) * | 1955-12-01 | 1957-05-21 | Sperry Rand Corp | Method and apparatus for preparing a latent magnetic image |
| US3058844A (en) * | 1959-10-13 | 1962-10-16 | Ibm | Composition of epoxide resin, methylol phenol ether, polyvinyl methyl ether, and acid anhydride catalyst, and metal substrate coated therewith, especially a magnetic signal storage device |
| US3198657A (en) * | 1964-09-17 | 1965-08-03 | Ibm | Process for spin coating objects |
| NL140630B (nl) * | 1964-11-09 | 1973-12-17 | Du Pont | Werkwijze voor het thermomagnetisch kopieren. |
| US3513021A (en) * | 1966-08-24 | 1970-05-19 | Minnesota Mining & Mfg | Electromagnetic-sensitive recording medium |
| US3531322A (en) * | 1966-12-28 | 1970-09-29 | Honeywell Inc | Plated super-coat and electrolyte |
| US3534344A (en) * | 1967-12-21 | 1970-10-13 | Ibm | Method and apparatus for recording and detecting information |
| US3585141A (en) * | 1969-05-05 | 1971-06-15 | Du Pont | Stabilization of chromium dioxide by monomeric cyclic amines |
| US3512930A (en) * | 1969-05-07 | 1970-05-19 | Du Pont | Stabilized ferromagnetic chromium dioxide |
| US3586630A (en) * | 1969-05-08 | 1971-06-22 | Du Pont | Stabilization of chromium dioxide by organophosphorus compounds |
| US3686031A (en) * | 1969-11-26 | 1972-08-22 | Du Pont | Metal phosphate coated ferromagnetic chromium oxide and its preparation |
| US3634252A (en) * | 1970-06-22 | 1972-01-11 | Du Pont | Chromium dioxide recording compositions stabilized with long-chain ammonium salts |
-
1971
- 1971-06-28 US US00157201A patent/US3753252A/en not_active Expired - Lifetime
-
1972
- 1972-05-26 GB GB2492072A patent/GB1384918A/en not_active Expired
- 1972-06-13 DE DE2228734A patent/DE2228734A1/de active Pending
- 1972-06-22 CA CA145,370A patent/CA968678A/en not_active Expired
- 1972-06-27 FR FR7224037A patent/FR2191187B1/fr not_active Expired
- 1972-06-28 JP JP7264149A patent/JPS524451B1/ja active Pending
Non-Patent Citations (1)
| Title |
|---|
| NEANT * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2463475A1 (fr) * | 1979-08-14 | 1981-02-20 | Transac Dev Transact Automat | Procede de realisation d'une piste magnetique presentant des caracteristiques physiques variables le long de la piste |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1384918A (en) | 1975-02-26 |
| JPS524451B1 (US07906523-20110315-C00004.png) | 1977-02-04 |
| FR2191187B1 (US07906523-20110315-C00004.png) | 1976-01-16 |
| DE2228734A1 (de) | 1973-01-18 |
| CA968678A (en) | 1975-06-03 |
| US3753252A (en) | 1973-08-14 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |