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 |
| MY158962A (en) * | 2008-09-30 | 2016-11-30 | Hoya Corp | Glass substrate for a magnetic disk and magnetic disk |
-
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 |
|---|---|
| CN103050133B (zh) | 2016-08-10 |
| CN103050133A (zh) | 2013-04-17 |
| JP2013089268A (ja) | 2013-05-13 |
| MY152421A (en) | 2014-09-30 |
| JP5212530B2 (ja) | 2013-06-19 |
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