SG153715A1 - Manufacturing method of glass substrate for magnetic disc and manufacturing method of magnetic disc - Google Patents

Manufacturing method of glass substrate for magnetic disc and manufacturing method of magnetic disc

Info

Publication number
SG153715A1
SG153715A1 SG200806343-0A SG2008063430A SG153715A1 SG 153715 A1 SG153715 A1 SG 153715A1 SG 2008063430 A SG2008063430 A SG 2008063430A SG 153715 A1 SG153715 A1 SG 153715A1
Authority
SG
Singapore
Prior art keywords
cleansing
glass substrate
manufacturing
magnetic disc
cleansing liquid
Prior art date
Application number
SG200806343-0A
Inventor
Yoshinori Marumo
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 SG153715A1 publication Critical patent/SG153715A1/en

Links

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

To solve the above-mentioned problems, a typical configuration of a manufacturing method of a glass substrate for a magnetic disc according to the present invention includes a polishing step of the glass substrate 150 and a cleansing step for cleansing the glass substrate by takt method that supplies at least two types or more of cleansing liquid 112 including different components into a plurality of cleansing tanks 114, one type of cleansing liquid for one tank, and dips the glass substrate 150 into the cleansing liquid 112, wherein the number of dust included in the cleansing liquid 112 is calculated and in response to the number of the calculated dust, supply quantity of the cleansing liquid 112 is controlled so that the number of dust becomes a predetermined number or less during the takt time in the cleansing step.
SG200806343-0A 2007-12-21 2008-08-27 Manufacturing method of glass substrate for magnetic disc and manufacturing method of magnetic disc SG153715A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007329657A JP2009151879A (en) 2007-12-21 2007-12-21 Method of manufacturing glass substrate for magnetic disk, and method of manufacturing magnetic disk

Publications (1)

Publication Number Publication Date
SG153715A1 true SG153715A1 (en) 2009-07-29

Family

ID=40901937

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200806343-0A SG153715A1 (en) 2007-12-21 2008-08-27 Manufacturing method of glass substrate for magnetic disc and manufacturing method of magnetic disc

Country Status (2)

Country Link
JP (1) JP2009151879A (en)
SG (1) SG153715A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103959379B (en) * 2011-06-30 2017-06-27 Hoya株式会社 The manufacture method and cleaning support of HDD glass substrates

Also Published As

Publication number Publication date
JP2009151879A (en) 2009-07-09

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