TW374907B - Temperature treatment of flexible media for dimensional stability - Google Patents
Temperature treatment of flexible media for dimensional stabilityInfo
- Publication number
- TW374907B TW374907B TW087106308A TW87106308A TW374907B TW 374907 B TW374907 B TW 374907B TW 087106308 A TW087106308 A TW 087106308A TW 87106308 A TW87106308 A TW 87106308A TW 374907 B TW374907 B TW 374907B
- Authority
- TW
- Taiwan
- Prior art keywords
- media
- dimensional stability
- heating step
- temperature treatment
- disclosed
- 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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base 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
- G11B5/82—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
- G11B5/48—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
- G11B5/54—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 into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
- G11B5/5565—Track change, selection or acquisition by displacement of the head across disk tracks system adaptation for compensation of variations of physical parameters, e.g. temperature
-
- 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
- G11B5/5965—Embedded servo format
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Magnetic Record Carriers (AREA)
- Manufacturing Optical Record Carriers (AREA)
Abstract
A method for heating information storage media so as to enhance dimensional stability is disclosed. The media is heated to a temperature that meets or exceed the upper limit of the normal operating temperature of the media. The heating step causes the media substrate to anisotropically deform to a structure relaxation state. The heating step occurs prior to embedding circular tracks onto the media, thereby enabling the tracks to remain circular even upon reaching elevated operating temperatures for long periods of time. A disk having such dimensional stability because of the heating step is also disclosed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US84611597A | 1997-04-25 | 1997-04-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
TW374907B true TW374907B (en) | 1999-11-21 |
Family
ID=25296989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW087106308A TW374907B (en) | 1997-04-25 | 1998-04-23 | Temperature treatment of flexible media for dimensional stability |
Country Status (2)
Country | Link |
---|---|
TW (1) | TW374907B (en) |
WO (1) | WO1998049678A1 (en) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2608022C2 (en) * | 1976-02-27 | 1984-03-29 | Basf Ag, 6700 Ludwigshafen | Process for the production of magnetic recording media with a wear-resistant surface |
JPS62114117A (en) * | 1985-11-14 | 1987-05-25 | Teac Co | Magnetic disc |
JPH01237932A (en) * | 1988-03-18 | 1989-09-22 | Fuji Electric Co Ltd | Production of magnetic disk substrate |
JPH02110826A (en) * | 1988-10-20 | 1990-04-24 | Fuji Photo Film Co Ltd | Magnetic disk |
JPH02173959A (en) * | 1988-12-26 | 1990-07-05 | Fuji Photo Film Co Ltd | Production of magneto-optical recording medium |
JPH0330136A (en) * | 1989-06-28 | 1991-02-08 | Fuji Photo Film Co Ltd | Production of magneto-optical recording medium |
JPH0421943A (en) * | 1990-05-17 | 1992-01-24 | Ricoh Co Ltd | Production of magneto-optical memory medium |
JPH04243062A (en) * | 1991-01-18 | 1992-08-31 | Matsushita Electric Ind Co Ltd | Floppy disk and its driving device |
DE69510878T2 (en) * | 1994-09-05 | 1999-11-11 | Victor Company Of Japan | Magnetic recording medium |
-
1998
- 1998-04-23 TW TW087106308A patent/TW374907B/en active
- 1998-04-23 WO PCT/US1998/007937 patent/WO1998049678A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO1998049678A1 (en) | 1998-11-05 |
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