MY168267A - Method for manufacturing magnetic-disk substrate, and polishing pad used in manufacture of magnetic-disk substrate - Google Patents

Method for manufacturing magnetic-disk substrate, and polishing pad used in manufacture of magnetic-disk substrate

Info

Publication number
MY168267A
MY168267A MYPI2015702569A MYPI2015702569A MY168267A MY 168267 A MY168267 A MY 168267A MY PI2015702569 A MYPI2015702569 A MY PI2015702569A MY PI2015702569 A MYPI2015702569 A MY PI2015702569A MY 168267 A MY168267 A MY 168267A
Authority
MY
Malaysia
Prior art keywords
magnetic
substrate
disk substrate
polishing pads
polishing
Prior art date
Application number
MYPI2015702569A
Inventor
Takumi Kuhara
Daisuke Cho
Yuji Yamashiro
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 MY168267A publication Critical patent/MY168267A/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
    • B24B37/11—Lapping tools
    • B24B37/20—Lapping pads for working plane surfaces
    • B24B37/24—Lapping pads for working plane surfaces characterised by the composition or properties of the pad materials

Abstract

METHOD FOR MANUFACTURING MAGNETIC-DISK SUBSTRATE, AND POLISHING PAD USED IN MANUFACTURE OF MAGNETIC-DISK SUBSTRATE In order to reduce a root mean square roughness Rq of microwaviness having a wavelength from 50 to 200 μm on a main surface of a glass substrate, a method for manufacturing a magnetic-disk substrate includes polishing both main surfaces of a substrate by sandwiching the substrate with a pair of polishing pads, supplying a slurry containing polishing abrasive particles between the polishing pads and the substrate, and sliding the polishing pads and the substrate relative to each other. The polishing pads respectively have a resin foam layer having a plurality of openings in a surface. When information on a three-dimensional shape of a surface of the polishing pads is obtained from captured images of the surface of the polishing pads, and an arithmetic mean roughness Ra of the surface of the polishing pads is derived from the information on the three-dimensional shape, the Ra is 0.5 μm or less. (FIG. 4)
MYPI2015702569A 2013-02-08 2014-02-07 Method for manufacturing magnetic-disk substrate, and polishing pad used in manufacture of magnetic-disk substrate MY168267A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013023575 2013-02-08

Publications (1)

Publication Number Publication Date
MY168267A true MY168267A (en) 2018-10-17

Family

ID=51299826

Family Applications (2)

Application Number Title Priority Date Filing Date
MYPI2018000692A MY195662A (en) 2013-02-08 2014-02-07 Method for Manufacturing Magnetic-Disk Substrate, and Polishing Pad
MYPI2015702569A MY168267A (en) 2013-02-08 2014-02-07 Method for manufacturing magnetic-disk substrate, and polishing pad used in manufacture of magnetic-disk substrate

Family Applications Before (1)

Application Number Title Priority Date Filing Date
MYPI2018000692A MY195662A (en) 2013-02-08 2014-02-07 Method for Manufacturing Magnetic-Disk Substrate, and Polishing Pad

Country Status (5)

Country Link
JP (2) JP6039698B2 (en)
CN (2) CN108564969B (en)
MY (2) MY195662A (en)
SG (2) SG10201708325TA (en)
WO (1) WO2014123236A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP6809779B2 (en) * 2015-08-25 2021-01-06 株式会社フジミインコーポレーテッド Polishing pads, polishing pad conditioning methods, pad conditioning agents, their use
KR101674539B1 (en) * 2015-10-15 2016-11-09 주식회사 이오테크닉스 Laser processing system, picker apparatus and method for transporting workpieces using the same
JP6236191B1 (en) * 2016-03-31 2017-11-22 Hoya株式会社 Carrier and method of manufacturing substrate using the carrier
CN109108763A (en) * 2018-09-26 2019-01-01 湖州练市飞迪电器塑料有限公司 A kind of ironware edging device that accuracy is high
US20210323115A1 (en) * 2020-04-18 2021-10-21 Rohm And Haas Electronic Materials Cmp Holdings, Inc. Leveraged poromeric polishing pad
JP7003178B2 (en) * 2020-04-21 2022-01-20 Hoya株式会社 Manufacturing method of disk-shaped glass substrate, manufacturing method of thin glass substrate, manufacturing method of light guide plate and disk-shaped glass substrate

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5708633A (en) * 1995-06-07 1998-01-13 Discovision Associates Method and apparatus for manufacturing information storage devices
JP2002092867A (en) * 2000-09-21 2002-03-29 Hoya Corp Method of manufacturing glass substrate for information recording medium and method of manufacturing information recording medium
US6790509B2 (en) * 2000-10-19 2004-09-14 Hoya Corporation Substrate for information recording medium, information recording medium, and method for controlling surface of substrate for information recording medium
JP4659338B2 (en) * 2003-02-12 2011-03-30 Ｈｏｙａ株式会社 Manufacturing method of glass substrate for information recording medium and polishing pad used therefor
JP4199645B2 (en) * 2003-11-07 2008-12-17 Ｈｏｙａ株式会社 Method for manufacturing glass substrate for magnetic disk and method for manufacturing magnetic disk
JP4190398B2 (en) * 2003-11-19 2008-12-03 Ｈｏｙａ株式会社 Manufacturing method of glass substrate for magnetic disk and manufacturing method of magnetic disk
JP5008350B2 (en) * 2006-07-05 2012-08-22 花王株式会社 Polishing liquid composition for glass substrate
DE112007002066B4 (en) * 2006-09-06 2019-10-17 Nitta Haas Inc. polishing pad
JP5332249B2 (en) * 2007-06-05 2013-11-06 旭硝子株式会社 Glass substrate polishing method
US7841069B2 (en) * 2007-08-30 2010-11-30 International Business Machines Corporation Method for manufacturing a thin closure magnetic head
WO2009084534A1 (en) * 2007-12-28 2009-07-09 Hoya Corporation Magnetic disk glass substrate, magnetic disk, and magnetic disk manufacturing method
US8895165B2 (en) * 2008-09-10 2014-11-25 Hoya Corporation Method of manufacturing a glass substrate for a magnetic disk, glass substrate for a magnetic disk, method of manufacturing a magnetic disk, and magnetic disk
JP5544131B2 (en) * 2009-09-03 2014-07-09 富士紡ホールディングス株式会社 Polishing pad
JP5853408B2 (en) * 2011-05-09 2016-02-09 旭硝子株式会社 Manufacturing method of glass substrate for magnetic recording medium and glass substrate for magnetic recording medium

Also Published As

Publication number Publication date
SG10201708325TA (en) 2017-11-29
JPWO2014123236A1 (en) 2017-02-02
JP6184577B2 (en) 2017-08-23
MY195662A (en) 2023-02-03
CN104969292A (en) 2015-10-07
JP6039698B2 (en) 2016-12-07
CN104969292B (en) 2018-06-05
JP2017037701A (en) 2017-02-16
WO2014123236A1 (en) 2014-08-14
CN108564969B (en) 2019-08-23
SG11201506222QA (en) 2015-09-29
CN108564969A (en) 2018-09-21

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