WO2008087837A1 - ガラス基板成形用金型、ガラス基板の製造方法、情報記録媒体用ガラス基板の製造方法及び情報記録媒体の製造方法 - Google Patents

ガラス基板成形用金型、ガラス基板の製造方法、情報記録媒体用ガラス基板の製造方法及び情報記録媒体の製造方法 Download PDF

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Publication number
WO2008087837A1
WO2008087837A1 PCT/JP2007/074924 JP2007074924W WO2008087837A1 WO 2008087837 A1 WO2008087837 A1 WO 2008087837A1 JP 2007074924 W JP2007074924 W JP 2007074924W WO 2008087837 A1 WO2008087837 A1 WO 2008087837A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass substrate
producing
recording medium
information recording
mold
Prior art date
Application number
PCT/JP2007/074924
Other languages
English (en)
French (fr)
Inventor
Hideki Kawai
Original Assignee
Konica Minolta Opto, Inc.
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 Konica Minolta Opto, Inc. filed Critical Konica Minolta Opto, Inc.
Priority to JP2008553994A priority Critical patent/JP4285589B2/ja
Priority to CN200780049792XA priority patent/CN101588996B/zh
Priority to US12/448,931 priority patent/US8245537B2/en
Publication of WO2008087837A1 publication Critical patent/WO2008087837A1/ja

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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/12—Cooling, heating, or insulating the plunger, the mould, or the glass-pressing machine; cooling or heating of the glass in the mould
    • C03B11/125—Cooling
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/02—Press-mould materials
    • C03B2215/03—Press-mould materials defined by material properties or parameters, e.g. relative CTE of mould parts
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/40—Product characteristics
    • C03B2215/44—Flat, parallel-faced disc or plate products
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

　溶融ガラスをプレス成形してガラス基板を製造する方法により高い平面度を有するガラス基板を製造することができるガラス基板成形用金型、該金型を用いたガラス基板の製造方法等を提供する。溶融ガラスが供給され、供給された該溶融ガラスを加圧するための第１の成形面を備える下型と、第１の成形面との間で溶融ガラスを加圧するための第２の成形面を備える上型と、を有する金型であって、第１の成形面のうち、加圧前に溶融ガラスと接触する中心部の表面粗さＲａよりも、加圧後に溶融ガラスと接触する周辺部の表面粗さＲａの方が大きい。
PCT/JP2007/074924 2007-01-16 2007-12-26 ガラス基板成形用金型、ガラス基板の製造方法、情報記録媒体用ガラス基板の製造方法及び情報記録媒体の製造方法 WO2008087837A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2008553994A JP4285589B2 (ja) 2007-01-16 2007-12-26 ガラス基板成形用金型、ガラス基板の製造方法、情報記録媒体用ガラス基板の製造方法及び情報記録媒体の製造方法
CN200780049792XA CN101588996B (zh) 2007-01-16 2007-12-26 玻璃基板成型用模具、玻璃基板的制造方法、信息记录介质玻璃基板的制造方法及信息记录介质的制造方法
US12/448,931 US8245537B2 (en) 2007-01-16 2007-12-26 Mold for glass substrate molding, method for producing glass substrate, method for producing glass substrate for information recording medium, and method for producing information recording medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007006913 2007-01-16
JP2007-006913 2007-01-16

Publications (1)

Publication Number Publication Date
WO2008087837A1 true WO2008087837A1 (ja) 2008-07-24

Family

ID=39635842

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/074924 WO2008087837A1 (ja) 2007-01-16 2007-12-26 ガラス基板成形用金型、ガラス基板の製造方法、情報記録媒体用ガラス基板の製造方法及び情報記録媒体の製造方法

Country Status (4)

Country Link
US (1) US8245537B2 (ja)
JP (1) JP4285589B2 (ja)
CN (1) CN101588996B (ja)
WO (1) WO2008087837A1 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8245537B2 (en) 2007-01-16 2012-08-21 Konica Minolta Opto, Inc. Mold for glass substrate molding, method for producing glass substrate, method for producing glass substrate for information recording medium, and method for producing information recording medium
CN106098086A (zh) * 2009-09-30 2016-11-09 Hoya株式会社 制造用于信息记录介质的基板的玻璃毛坯的方法及设备
WO2017170556A1 (ja) * 2016-03-30 2017-10-05 Hoya株式会社 ガラスブランク、ガラスブランクの製造方法、及び磁気ディスク用ガラス基板の製造方法
WO2024036683A1 (zh) * 2022-08-18 2024-02-22 诚瑞光学(重庆)有限公司 一种玻璃产品的成型模具

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* Cited by examiner, † Cited by third party
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JP5071229B2 (ja) * 2008-05-08 2012-11-14 コニカミノルタアドバンストレイヤー株式会社 ガラス基板成形用金型、ガラス基板の製造方法、情報記録媒体用ガラス基板の製造方法、情報記録媒体の製造方法
JP5169732B2 (ja) * 2008-10-24 2013-03-27 コニカミノルタアドバンストレイヤー株式会社 ガラス成形体の製造方法及び上型の製造方法
SG177343A1 (en) * 2009-12-29 2012-02-28 Hoya Corp Glass substrate for magnetic disk and manufacturing method thereof
MY163557A (en) * 2010-09-30 2017-09-29 Hoya Corp Method of manufacturing glass blank for magnetic recording medium glass substrate, method of manufacturing magnetic recording medium glass substrate, and method of manufacturing magnetic recording medium
US20120247155A1 (en) * 2011-03-30 2012-10-04 Hoya Corporation Method of manufacturing glass blank for magnetic recording medium glass substrate, method of manufacturing magnetic recording medium glass substrate, method of manufacturing magnetic recording medium, and apparatus for manufacturing glass blank for magnetic recording medium glass substrate
CN106430918B (zh) * 2011-04-21 2019-05-14 Hoya株式会社 磁盘用玻璃坯料的制造方法及磁盘用玻璃基板的制造方法、玻璃坯料、磁盘用玻璃基板
JP5435018B2 (ja) * 2011-12-15 2014-03-05 コニカミノルタ株式会社 板ガラスブランクス，その製造方法及びカバーガラス板の製造方法
CN107034405A (zh) * 2017-05-18 2017-08-11 谢永超 玻璃热弯成型的热作模具材料及其制备方法与应用
US11608288B2 (en) 2017-10-13 2023-03-21 Corning Incorporated Methods and apparatus for pressing glass or glass-ceramic preforms to form shaped plates, methods for manufacturing liquid lenses, and liquid lenses

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JPH09328322A (ja) * 1996-06-04 1997-12-22 Fuji Photo Optical Co Ltd 光学素材成形用型、及び光学部品製造方法
JP2004021077A (ja) * 2002-06-19 2004-01-22 Nikon Corp 回折光学素子、回折光学素子成形用金型、回折光学素子の切削加工方法、回折光学素子成形用金型の切削加工方法、及び切削加工装置
JP2007099598A (ja) * 2005-10-07 2007-04-19 Pentax Corp 光学ガラス成形用金型及びその製造方法

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JPH10194763A (ja) 1997-01-13 1998-07-28 Hoya Corp 肉薄板状ガラスの製造方法
JP3701106B2 (ja) * 1997-08-07 2005-09-28 松下電器産業株式会社 プレス成形用金型及び磁気ディスク用ガラス基板
US6383645B1 (en) * 1998-03-23 2002-05-07 Kabushiki Kaisha Ohara Glass-ceramic substrate for an information storage medium
US6146558A (en) * 1998-05-01 2000-11-14 General Electric Company Structure and method for molding optical disks
JP2002226221A (ja) * 2000-11-30 2002-08-14 Ngk Insulators Ltd ガラスプレス用金型及びその製造方法
JP2004022244A (ja) * 2002-06-13 2004-01-22 Nippon Electric Glass Co Ltd 陰極線管用ガラスパネル及びその製造に用いる成型装置
US7488170B2 (en) * 2004-04-09 2009-02-10 Konica Minolta Opto, Inc. Metallic mold for optical element and optical element
CN101588996B (zh) 2007-01-16 2012-02-22 柯尼卡美能达精密光学株式会社 玻璃基板成型用模具、玻璃基板的制造方法、信息记录介质玻璃基板的制造方法及信息记录介质的制造方法
JP2008174401A (ja) * 2007-01-16 2008-07-31 Konica Minolta Opto Inc ガラス基板成形用金型、ガラス基板の製造方法、情報記録媒体用ガラス基板の製造方法及び情報記録媒体の製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09328322A (ja) * 1996-06-04 1997-12-22 Fuji Photo Optical Co Ltd 光学素材成形用型、及び光学部品製造方法
JP2004021077A (ja) * 2002-06-19 2004-01-22 Nikon Corp 回折光学素子、回折光学素子成形用金型、回折光学素子の切削加工方法、回折光学素子成形用金型の切削加工方法、及び切削加工装置
JP2007099598A (ja) * 2005-10-07 2007-04-19 Pentax Corp 光学ガラス成形用金型及びその製造方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8245537B2 (en) 2007-01-16 2012-08-21 Konica Minolta Opto, Inc. Mold for glass substrate molding, method for producing glass substrate, method for producing glass substrate for information recording medium, and method for producing information recording medium
CN106098086A (zh) * 2009-09-30 2016-11-09 Hoya株式会社 制造用于信息记录介质的基板的玻璃毛坯的方法及设备
CN111261199A (zh) * 2009-09-30 2020-06-09 Hoya株式会社 用于磁盘的玻璃基板的磁盘的玻璃毛坯
CN111261199B (zh) * 2009-09-30 2021-08-03 Hoya株式会社 用于磁盘的玻璃基板的磁盘的玻璃毛坯
WO2017170556A1 (ja) * 2016-03-30 2017-10-05 Hoya株式会社 ガラスブランク、ガラスブランクの製造方法、及び磁気ディスク用ガラス基板の製造方法
WO2024036683A1 (zh) * 2022-08-18 2024-02-22 诚瑞光学(重庆)有限公司 一种玻璃产品的成型模具

Also Published As

Publication number Publication date
US8245537B2 (en) 2012-08-21
CN101588996B (zh) 2012-02-22
JPWO2008087837A1 (ja) 2010-05-06
US20100071416A1 (en) 2010-03-25
JP4285589B2 (ja) 2009-06-24
CN101588996A (zh) 2009-11-25

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