SG194411A1 - Glass substrate for magnetic recording medium and magnetic recording medium - Google Patents
Glass substrate for magnetic recording medium and magnetic recording medium Download PDFInfo
- Publication number
- SG194411A1 SG194411A1 SG2013074836A SG2013074836A SG194411A1 SG 194411 A1 SG194411 A1 SG 194411A1 SG 2013074836 A SG2013074836 A SG 2013074836A SG 2013074836 A SG2013074836 A SG 2013074836A SG 194411 A1 SG194411 A1 SG 194411A1
- Authority
- SG
- Singapore
- Prior art keywords
- recording medium
- magnetic recording
- glass substrate
- load
- hours
- Prior art date
Links
- 239000011521 glass Substances 0.000 title claims abstract description 202
- 239000000758 substrate Substances 0.000 title claims abstract description 196
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000005498 polishing Methods 0.000 claims description 55
- 238000000034 method Methods 0.000 claims description 42
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 239000010410 layer Substances 0.000 description 42
- 230000002093 peripheral effect Effects 0.000 description 28
- 238000004140 cleaning Methods 0.000 description 10
- 239000011241 protective layer Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 229910000420 cerium oxide Inorganic materials 0.000 description 7
- 230000001050 lubricating effect Effects 0.000 description 7
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 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
- 238000001035 drying Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910019236 CoFeB Inorganic materials 0.000 description 1
- 229910018979 CoPt Inorganic materials 0.000 description 1
- 241000613158 Eirene Species 0.000 description 1
- -1 FeAlSi Inorganic materials 0.000 description 1
- 229910005435 FeTaN Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 238000006124 Pilkington process Methods 0.000 description 1
- 229910000929 Ru alloy Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 210000000941 bile Anatomy 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000003426 chemical strengthening reaction Methods 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 238000003280 down draw process Methods 0.000 description 1
- 238000012053 enzymatic serum creatinine assay Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000696 magnetic material 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
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010702 perfluoropolyether Substances 0.000 description 1
- 239000004402 sodium ethyl p-hydroxybenzoate Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000006058 strengthened glass Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000009461 vacuum packaging Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011282327A JP5310834B2 (ja) | 2011-12-22 | 2011-12-22 | 磁気記録媒体用ガラス基板および磁気記録媒体 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SG194411A1 true SG194411A1 (en) | 2013-11-29 |
Family
ID=48632555
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SG2013074836A SG194411A1 (en) | 2011-12-22 | 2012-12-12 | Glass substrate for magnetic recording medium and magnetic recording medium |
| SG2012091484A SG191513A1 (en) | 2011-12-22 | 2012-12-12 | Glass substrate for magnetic recording medium and magnetic recording medium |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SG2012091484A SG191513A1 (en) | 2011-12-22 | 2012-12-12 | Glass substrate for magnetic recording medium and magnetic recording medium |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5310834B2 (ja) |
| CN (2) | CN103172276B (ja) |
| PH (2) | PH12012000400A1 (ja) |
| SG (2) | SG194411A1 (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5920403B2 (ja) * | 2013-06-21 | 2016-05-18 | 旭硝子株式会社 | 磁気記録媒体の製造方法および磁気記録媒体 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417861A (zh) * | 2007-10-26 | 2009-04-29 | 旭硝子株式会社 | 信息记录媒体基板用玻璃、磁盘用玻璃基板及磁盘 |
| JP2011040144A (ja) * | 2009-07-17 | 2011-02-24 | Ohara Inc | 情報記録媒体用基板の製造方法 |
| US8603350B2 (en) * | 2009-07-17 | 2013-12-10 | Ohara Inc. | Method of manufacturing substrate for information storage media |
| JP5662423B2 (ja) * | 2010-03-31 | 2015-01-28 | Hoya株式会社 | 磁気記録媒体ガラス基板用ガラスブランクの製造方法、磁気記録媒体ガラス基板の製造方法および磁気記録媒体の製造方法 |
-
2011
- 2011-12-22 JP JP2011282327A patent/JP5310834B2/ja not_active Expired - Fee Related
-
2012
- 2012-12-12 SG SG2013074836A patent/SG194411A1/en unknown
- 2012-12-12 SG SG2012091484A patent/SG191513A1/en unknown
- 2012-12-21 PH PH12012000400A patent/PH12012000400A1/en unknown
- 2012-12-21 CN CN201210560842.3A patent/CN103172276B/zh not_active Expired - Fee Related
- 2012-12-21 CN CN201310482024.0A patent/CN103626406B/zh not_active Expired - Fee Related
-
2013
- 2013-10-02 PH PH12013000297A patent/PH12013000297A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN103626406B (zh) | 2016-04-27 |
| SG191513A1 (en) | 2013-07-31 |
| PH12012000400B1 (en) | 2015-02-23 |
| PH12012000400A1 (en) | 2015-02-23 |
| PH12013000297A1 (en) | 2015-05-11 |
| JP5310834B2 (ja) | 2013-10-09 |
| CN103172276A (zh) | 2013-06-26 |
| JP2013131281A (ja) | 2013-07-04 |
| CN103626406A (zh) | 2014-03-12 |
| CN103172276B (zh) | 2016-08-03 |
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 | |
| JP6332321B2 (ja) | 磁気記録媒体用のガラス基板および磁気記録媒体 | |
| US20070003796A1 (en) | Method for manufacturing magnetic disk glass substrate and method for manufacturing magnetic disk | |
| JP5029777B1 (ja) | 磁気記録媒体用ガラス基板、および該磁気記録媒体用ガラス基板を用いた磁気記録媒体 | |
| US20100081013A1 (en) | Magnetic disk substrate and magnetic disk | |
| SG188769A1 (en) | Glass substrate for magnetic recording medium | |
| SG194411A1 (en) | Glass substrate for magnetic recording medium and magnetic recording medium | |
| CN103978422A (zh) | 磁记录介质用玻璃基板的制造方法及磁记录介质用玻璃基板 | |
| JP5348304B2 (ja) | 磁気記録媒体用ガラス基板の製造方法および磁気記録媒体の製造方法 | |
| JP2004335081A (ja) | 磁気ディスク用ガラス基板の洗浄方法及び磁気ディスク用ガラス基板の製造方法並びに磁気ディスクの製造方法 | |
| JP5781845B2 (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 | |
| JP2017199442A (ja) | 磁気記録媒体用基板の製造方法、磁気記録媒体用基板の梱包体 | |
| 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 | |
| JP5212530B2 (ja) | 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 | |
| JP4977795B1 (ja) | 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 | |
| CN104230164B (zh) | 磁记录介质的制造方法及磁记录介质 | |
| JP5360331B2 (ja) | Ｈｄｄ用ガラス基板の製造方法 | |
| JP5234740B2 (ja) | 磁気ディスク用基板の製造方法および磁気ディスクの製造方法 | |
| JP2013089280A (ja) | 磁気記録媒体用ガラス基板の製造方法、及び、磁気記録媒体の製造方法 |