PH12014000045A1 - Glass substrate for magnetic recording medium and method for manufacturing the glass substrate for magnetic recording medium - Google Patents

Glass substrate for magnetic recording medium and method for manufacturing the glass substrate for magnetic recording medium

Info

Publication number
PH12014000045A1
PH12014000045A1 PH12014000045A PH12014000045A PH12014000045A1 PH 12014000045 A1 PH12014000045 A1 PH 12014000045A1 PH 12014000045 A PH12014000045 A PH 12014000045A PH 12014000045 A PH12014000045 A PH 12014000045A PH 12014000045 A1 PH12014000045 A1 PH 12014000045A1
Authority
PH
Philippines
Prior art keywords
recording medium
glass substrate
magnetic recording
manufacturing
polishing
Prior art date
Application number
PH12014000045A
Inventor
Minoru Tamada
Haruhiko Otsuka
Original Assignee
Asahi Glass Co Ltd
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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Publication of PH12014000045A1 publication Critical patent/PH12014000045A1/en

Links

Classifications

    • 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
    • B24B37/10—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for single side lapping
    • 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

Abstract

A method for manufacturing a glass substrate for a magnetic recording medium includes a step of polishing a main surface of the glass by using a soft polishing pad including a polishing surface. The polishing surface has a surface roughness (Ra) of 0.40 um to 1.40 um in a measured wavelength of 2.5 um to 80 um, and a surface roughness (Ra) of 0.40 um to 2.00 um in a measured wavelength of 2.5 um to 800 um.
PH12014000045A 2013-02-08 2014-01-30 Glass substrate for magnetic recording medium and method for manufacturing the glass substrate for magnetic recording medium PH12014000045A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013023437A JP2014154187A (en) 2013-02-08 2013-02-08 Manufacturing method of glass substrate for magnetic recording medium, and glass substrate for magnetic recording medium

Publications (1)

Publication Number Publication Date
PH12014000045A1 true PH12014000045A1 (en) 2015-08-10

Family

ID=51270722

Family Applications (1)

Application Number Title Priority Date Filing Date
PH12014000045A PH12014000045A1 (en) 2013-02-08 2014-01-30 Glass substrate for magnetic recording medium and method for manufacturing the glass substrate for magnetic recording medium

Country Status (3)

Country Link
JP (1) JP2014154187A (en)
CN (1) CN103978422A (en)
PH (1) PH12014000045A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN116670328A (en) * 2021-10-28 2023-08-29 东海炭素株式会社 Polycrystalline SiC molded body and method for producing same
CN114523340B (en) * 2022-02-22 2023-02-14 深圳大学 Complete grinding and polishing equipment and grinding and polishing method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2002076675A1 (en) * 2001-03-27 2002-10-03 Nippon Sheet Glass Co., Ltd. Substrate for information recording medium and production method thereof, information recording medium, and glass blank sheet
JP5428793B2 (en) * 2009-11-17 2014-02-26 旭硝子株式会社 Glass substrate polishing method and method for producing glass substrate for magnetic recording medium
JP4858622B2 (en) * 2010-02-26 2012-01-18 旭硝子株式会社 Method for manufacturing glass substrate for magnetic recording medium
MY155778A (en) * 2010-04-01 2015-11-30 Hoya Corp Manufacturing method of a glass substrate for a magnetic disk
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
JP5737043B2 (en) * 2011-07-29 2015-06-17 旭硝子株式会社 Substrate glass and glass substrate

Also Published As

Publication number Publication date
JP2014154187A (en) 2014-08-25
CN103978422A (en) 2014-08-13

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