SG189628A1 - Glass substrate for magnetic recording medium and magnetic recording medium using the glass substrate for magnetic recording medium - Google Patents
Glass substrate for magnetic recording medium and magnetic recording medium using the glass substrate for magnetic recording medium Download PDFInfo
- Publication number
- SG189628A1 SG189628A1 SG2012073581A SG2012073581A SG189628A1 SG 189628 A1 SG189628 A1 SG 189628A1 SG 2012073581 A SG2012073581 A SG 2012073581A SG 2012073581 A SG2012073581 A SG 2012073581A SG 189628 A1 SG189628 A1 SG 189628A1
- Authority
- SG
- Singapore
- Prior art keywords
- recording medium
- magnetic recording
- glass substrate
- polishing
- magnetic
- Prior art date
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 257
- 239000000758 substrate Substances 0.000 title claims abstract description 155
- 239000011521 glass Substances 0.000 title claims abstract description 144
- 238000011156 evaluation Methods 0.000 claims abstract description 59
- 230000003746 surface roughness Effects 0.000 claims abstract description 57
- 229910003460 diamond Inorganic materials 0.000 claims description 2
- 239000010432 diamond Substances 0.000 claims description 2
- 238000005498 polishing Methods 0.000 description 136
- 238000000034 method Methods 0.000 description 58
- 239000010410 layer Substances 0.000 description 45
- 230000008569 process Effects 0.000 description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 26
- 239000008119 colloidal silica Substances 0.000 description 20
- 239000007788 liquid Substances 0.000 description 20
- 238000007517 polishing process Methods 0.000 description 18
- 239000006061 abrasive grain Substances 0.000 description 16
- 239000013078 crystal Substances 0.000 description 15
- 230000002093 peripheral effect Effects 0.000 description 14
- 238000004140 cleaning Methods 0.000 description 12
- 239000002245 particle Substances 0.000 description 11
- 241000206607 Porphyra umbilicalis Species 0.000 description 10
- 235000013339 cereals Nutrition 0.000 description 10
- 229910000420 cerium oxide Inorganic materials 0.000 description 9
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 9
- 239000011164 primary particle Substances 0.000 description 9
- 230000008859 change Effects 0.000 description 7
- 239000010408 film Substances 0.000 description 7
- 238000005461 lubrication Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000004220 aggregation Methods 0.000 description 5
- 230000002776 aggregation Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000011241 protective layer Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 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
- 230000007423 decrease Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910019236 CoFeB Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910001265 Eu alloy Inorganic materials 0.000 description 1
- 101100004031 Mus musculus Aven gene Proteins 0.000 description 1
- 238000006124 Pilkington process Methods 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003426 chemical strengthening reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000001605 fetal effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000005355 lead glass Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007500 overflow downdraw method Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000006058 strengthened glass Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Surface Treatment Of Glass (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011228322A JP5212530B2 (ja) | 2011-10-17 | 2011-10-17 | 磁気記録媒体用ガラス基板、及び、該磁気記録媒体用ガラス基板を用いた磁気記録媒体 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SG189628A1 true SG189628A1 (en) | 2013-05-31 |
Family
ID=48062748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SG2012073581A SG189628A1 (en) | 2011-10-17 | 2012-10-03 | Glass substrate for magnetic recording medium and magnetic recording medium using the glass substrate for magnetic recording medium |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5212530B2 (ja) |
| CN (1) | CN103050133B (ja) |
| MY (1) | MY152421A (ja) |
| SG (1) | SG189628A1 (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018101451A (ja) * | 2015-04-23 | 2018-06-28 | 旭硝子株式会社 | 磁気記録媒体用基板、磁気記録媒体、及び製造方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008293552A (ja) * | 2007-05-22 | 2008-12-04 | Fujitsu Ltd | 基板、磁気記録媒体及びその製造方法、並びに磁気記憶装置 |
| JP2009289370A (ja) * | 2008-05-30 | 2009-12-10 | Furukawa Electric Co Ltd:The | 磁気ディスク用ガラス基板 |
| WO2010038741A1 (ja) * | 2008-09-30 | 2010-04-08 | Hoya株式会社 | 磁気ディスク用ガラス基板及び磁気ディスク |
-
2011
- 2011-10-17 JP JP2011228322A patent/JP5212530B2/ja not_active Expired - Fee Related
-
2012
- 2012-10-03 SG SG2012073581A patent/SG189628A1/en unknown
- 2012-10-08 MY MYPI2012004477 patent/MY152421A/en unknown
- 2012-10-12 CN CN201210385806.8A patent/CN103050133B/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103050133A (zh) | 2013-04-17 |
| CN103050133B (zh) | 2016-08-10 |
| JP5212530B2 (ja) | 2013-06-19 |
| JP2013089268A (ja) | 2013-05-13 |
| MY152421A (en) | 2014-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10607647B2 (en) | Magnetic disk substrate with specified changes in height or depth between adjacent raised or lowered portions and an offset portion on a main surface within a range of 92.0 to 97.0% in a radial direction from a center, a magnetic disk with substrate and magnetic disk device | |
| US8096148B2 (en) | Method for fabricating a glass substrate, magnetic disk, and method for fabricating the same | |
| US11587585B2 (en) | Magnetic-disk substrate and magnetic disk | |
| US10497387B2 (en) | Magnetic-disk substrate and magnetic disk | |
| US20130260027A1 (en) | Method for manufacturing glass substrate for magnetic disk, and method for manufacturing magnetic disk | |
| JP5126401B1 (ja) | 磁気記録媒体用ガラス基板 | |
| CN105590638A (zh) | 磁盘用玻璃基板及磁盘 | |
| JP6266504B2 (ja) | 磁気ディスク用ガラス基板の製造方法及び磁気ディスクの製造方法 | |
| SG189628A1 (en) | Glass substrate for magnetic recording medium and magnetic recording medium using the glass substrate for magnetic recording medium | |
| JP5371667B2 (ja) | 磁気ディスク用ガラス基板の製造方法及び磁気ディスクの製造方法 | |
| JPWO2014208717A1 (ja) | 円板状ガラス基板、磁気ディスク用ガラス基板、磁気ディスク用ガラス基板の製造方法、磁気ディスク | |
| JP6298448B2 (ja) | 磁気ディスク用ガラス基板の製造方法、磁気ディスク用ガラス基板、及び磁気ディスクの製造方法 | |
| JP5494747B2 (ja) | 磁気記録媒体用ガラス基板の製造方法、及び、磁気記録媒体用ガラス基板 | |
| SG189605A1 (en) | Glass substrate for magnetic recording medium and magnetic recording medium using the glass substrate for magnetic recording medium | |
| JP5869241B2 (ja) | Ｈｄｄ用ガラス基板、ｈｄｄ用ガラス基板の製造方法、及びｈｄｄ用磁気記録媒体 | |
| WO2013146132A1 (ja) | 情報記録媒体用ガラス基板の製造方法および情報記録媒体 | |
| JP6020754B1 (ja) | 磁気記録媒体用ガラス基板、磁気記録媒体 | |
| WO2013146134A1 (ja) | 情報記録媒体用ガラス基板の製造方法および情報記録媒体 | |
| WO2013146131A1 (ja) | 情報記録媒体用ガラス基板の製造方法および情報記録媒体 |