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 discInfo
- 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
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.
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)
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 |
-
2007
- 2007-12-21 JP JP2007329657A patent/JP2009151879A/en active Pending
-
2008
- 2008-08-27 SG SG200806343-0A patent/SG153715A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
JP2009151879A (en) | 2009-07-09 |
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