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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 disk

Info

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
Application number
MYPI20080929A
Inventor
Masahiro Katagiri
Kotaro Yoshimaru
Original Assignee
Hoya Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoya Corp filed Critical Hoya Corp
Publication of MY165952A publication Critical patent/MY165952A/en

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.
MYPI20080929A 2006-09-19 2008-03-31 Method of manufacturing glass substrate for magnetic disk and method of manufacturing magnetic disk MY165952A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006253571 2006-09-19
JP2006253572 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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5365522B2 (en) 2008-07-03 2013-12-11 旭硝子株式会社 Glass substrate polishing method and manufacturing method
WO2011080912A1 (en) * 2009-12-29 2011-07-07 Hoya株式会社 Method for manufacturing magnetic-disk glass substrate, and magnetic-disk glass substrate
CN106297833B (en) * 2009-12-29 2019-03-08 Hoya株式会社 The manufacturing method and glass substrate for disc of glass substrate for disc
WO2011145662A1 (en) * 2010-05-20 2011-11-24 旭硝子株式会社 Process for producing glass substrate for information recording medium and process for producing 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
CN105247615B (en) * 2013-06-27 2018-06-22 Hoya株式会社 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
MY182511A (en) * 2014-10-14 2021-01-25 Hoya Corp Method for manufacturing magnetic-disk substrate, method for manufacturing magnetic disk, raw material for polishing pad, and method for manufacturing substrate
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
MY204727A (en) * 2019-02-15 2024-09-11 Toyo Kohan Co Ltd Manufacturing method of hard disk substrate

Family Cites Families (12)

* Cited by examiner, † Cited by third party
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
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
JP2004265582A (en) * 1999-09-30 2004-09-24 Hoya Corp Glass substrate for magnetic disk, and magnetic disk
JP4280397B2 (en) * 1999-10-21 2009-06-17 スピードファム株式会社 Work polishing method
EP1195798B1 (en) * 2000-04-12 2012-10-17 Shin-Etsu Handotai Co., Ltd. Method for producing 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

Also Published As

Publication number Publication date
CN102615588B (en) 2014-12-17
WO2008035586A1 (en) 2008-03-27
CN102615588A (en) 2012-08-01
CN101356040A (en) 2009-01-28
CN101356040B (en) 2012-05-30

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