MY165952A - Method of manufacturing glass substrate for magnetic disk and method of manufacturing magnetic disk - Google Patents
Method of manufacturing glass substrate for magnetic disk and method of manufacturing magnetic diskInfo
- Publication number
- MY165952A MY165952A MYPI20080929A MYPI20080929A MY165952A MY 165952 A MY165952 A MY 165952A MY PI20080929 A MYPI20080929 A MY PI20080929A MY PI20080929 A MYPI20080929 A MY PI20080929A MY 165952 A MY165952 A MY 165952A
- Authority
- MY
- Malaysia
- Prior art keywords
- glass substrate
- magnetic disk
- polishing
- manufacturing
- shape
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
- B24B37/042—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
- B24B37/07—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool
- B24B37/08—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for double side lapping
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
METHOD OF MANUFACTURING GLASS SUBSTRATE FOR MAGNETIC DISK AND METHOD OF MANUFACTURING MAGNETIC DISK IN A PRECEDING POLISHING STEP, POLISHING IS PERFORMED IN A MANNER THAT WHILE A 5 POLISHING LIQUID CONTAINING ABRASIVE GRAINS HAVING A LARGE DIAMETER IS SUPPLIED, A GLASS SUBSTRATE AND A SOFT POLISHING PAD ARE RELATIVELY MOVED TO EACH OTHER, WHICH LEADS TO FORMATION OF A SHAPE (SKI-JUMP) OF AN END OF A MAIN SURFACE OF THE GLASS SUBSTRATE BEING PROTRUDED COMPARED WITH A CENTRAL PORTION. IN A SUBSEQUENT POLISHING STEP, A POLISHING LIQUID CONTAINING ABRASIVE GRAINS HAVING A SMALL DIAMETER, AND A POLISHING PAD HAVING HIGH ,10 HARDNESS COMPARED WITH THE SOFT POLISHING PAD ARE USED. AND POLISHING IS PERFORMED SUCH THAT IF A GLASS SUBSTRATE HAVING A FLAT END IS POLISHED, A GLASS SUBSTRATE IS OBTAINED, OF WHICH THE MAIN SURFACE HAS AN END HAVING A SHAPE BEING DESCENDED COMPARED WITH A CENTRAL PORTION (ROLL-OFF). THUS, THE GLASS SUBSTRATE IS CHANGED IN A DIRECTION OF CANCELLING THE SKI-JUMP FORMED IN THE PRECEDING POLISHING STEP, SO THAT AN END SHAPE IS -15 APPROXIMATED TO A FLAT SHAPE.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006253572 | 2006-09-19 | ||
JP2006253571 | 2006-09-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
MY165952A true MY165952A (en) | 2018-05-18 |
Family
ID=39200413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI20080929A MY165952A (en) | 2006-09-19 | 2008-03-31 | Method of manufacturing glass substrate for magnetic disk and method of manufacturing magnetic disk |
Country Status (3)
Country | Link |
---|---|
CN (2) | CN101356040B (en) |
MY (1) | MY165952A (en) |
WO (1) | WO2008035586A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010001743A1 (en) | 2008-07-03 | 2010-01-07 | 旭硝子株式会社 | Method of polishing glass substrate and process for producing glass substrate |
MY183006A (en) | 2009-12-29 | 2021-02-05 | Hoya Corp | Manufacturing method of glass substrate for magnetic disk |
SG177343A1 (en) * | 2009-12-29 | 2012-02-28 | Hoya Corp | Glass substrate for magnetic disk and manufacturing method thereof |
JP5609971B2 (en) * | 2010-05-20 | 2014-10-22 | 旭硝子株式会社 | Manufacturing method of glass substrate for information recording medium and manufacturing method of magnetic disk |
CN102581750B (en) * | 2012-03-31 | 2015-04-29 | 天津西美科技有限公司 | Wax-free grinding and polishing template with double inlaying layers |
SG11201510551VA (en) * | 2013-06-27 | 2016-01-28 | Hoya Corp | Glass substrate for information recording medium and magnetic disk device |
CN104029117B (en) * | 2014-07-01 | 2015-04-29 | 中州大学 | Corner clutch type permanent magnet suction cup |
WO2016060168A1 (en) * | 2014-10-14 | 2016-04-21 | Hoya株式会社 | Method for manufacturing substrate for magnetic disc and method for manufacturing magnetic disc |
JP6913295B2 (en) * | 2016-12-27 | 2021-08-04 | 日本電気硝子株式会社 | Glass plate and manufacturing method of glass plate |
KR102391872B1 (en) * | 2017-05-26 | 2022-04-29 | 삼성디스플레이 주식회사 | Method of manufacturing a glass substrate and device for polishing a glass substrate |
WO2020166694A1 (en) * | 2019-02-15 | 2020-08-20 | 東洋鋼鈑株式会社 | Production method for hard disk board |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001023155A (en) * | 1999-07-09 | 2001-01-26 | Ngk Insulators Ltd | Substrate for magnetic disk, magnetic disk, and manufacture of substrate for magnetic disk |
JP2004265582A (en) * | 1999-09-30 | 2004-09-24 | Hoya Corp | Glass substrate for magnetic disk, and magnetic disk |
US6595028B1 (en) * | 1999-09-30 | 2003-07-22 | Hoya Corporation | Chemical reinforced glass substrate having desirable edge profile and method of manufacturing the same |
JP3568888B2 (en) * | 1999-09-30 | 2004-09-22 | Hoya株式会社 | Glass substrate for information recording medium, information recording medium, and method for producing them |
JP4280397B2 (en) * | 1999-10-21 | 2009-06-17 | スピードファム株式会社 | Work polishing method |
US6729941B2 (en) * | 2000-04-12 | 2004-05-04 | Shin-Etsu Handotai & Co., Ltd. | Process for manufacturing semiconductor wafer and semiconductor wafer |
JP2002184731A (en) * | 2000-12-18 | 2002-06-28 | Shin Etsu Handotai Co Ltd | Polishing method of wafer, and correction member |
JP4274708B2 (en) * | 2001-05-14 | 2009-06-10 | Hoya株式会社 | Glass substrate for magnetic recording medium and manufacturing method thereof |
JP2003145412A (en) * | 2001-08-27 | 2003-05-20 | Nippon Sheet Glass Co Ltd | Glass substrate for information recording medium, and polishing method for the same |
JP2005203021A (en) * | 2004-01-14 | 2005-07-28 | Fuji Electric Holdings Co Ltd | Manufacturing method of substrate for recording medium and manufacturing apparatus using the same |
JP4890751B2 (en) * | 2004-08-04 | 2012-03-07 | ニッタ・ハース株式会社 | Polishing cloth |
JP2006198751A (en) * | 2005-01-24 | 2006-08-03 | Showa Denko Kk | Method for manufacturing substrate for magnetic disk and polishing device |
-
2007
- 2007-09-11 CN CN2007800012384A patent/CN101356040B/en active Active
- 2007-09-11 WO PCT/JP2007/067619 patent/WO2008035586A1/en active Application Filing
- 2007-09-11 CN CN201210090406.4A patent/CN102615588B/en active Active
-
2008
- 2008-03-31 MY MYPI20080929A patent/MY165952A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CN101356040B (en) | 2012-05-30 |
WO2008035586A1 (en) | 2008-03-27 |
CN102615588A (en) | 2012-08-01 |
CN102615588B (en) | 2014-12-17 |
CN101356040A (en) | 2009-01-28 |
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