JP2004026570A - 情報記録媒体用ガラス基板とその製造方法、および情報磁気記録媒体 - Google Patents

情報記録媒体用ガラス基板とその製造方法、および情報磁気記録媒体 Download PDF

Info

Publication number
JP2004026570A
JP2004026570A JP2002185227A JP2002185227A JP2004026570A JP 2004026570 A JP2004026570 A JP 2004026570A JP 2002185227 A JP2002185227 A JP 2002185227A JP 2002185227 A JP2002185227 A JP 2002185227A JP 2004026570 A JP2004026570 A JP 2004026570A
Authority
JP
Japan
Prior art keywords
glass substrate
glass
recording medium
mold
substrate
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP2002185227A
Other languages
English (en)
Japanese (ja)
Other versions
JP2004026570A5 (enExample
Inventor
Koichi Tsuda
孝一 津田
Ryoji Kobayashi
良治 小林
Minoru Onoda
稔 小野田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Panasonic Holdings Corp
Original Assignee
Fuji Electric Holdings Ltd
Matsushita Electric Industrial 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 Fuji Electric Holdings Ltd, Matsushita Electric Industrial Co Ltd filed Critical Fuji Electric Holdings Ltd
Priority to JP2002185227A priority Critical patent/JP2004026570A/ja
Publication of JP2004026570A publication Critical patent/JP2004026570A/ja
Publication of JP2004026570A5 publication Critical patent/JP2004026570A5/ja
Pending legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C03C1/004—Refining agents
    • 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
    • C03B11/06—Construction of plunger or mould
    • C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
    • C03B11/084—Construction of plunger or mould for making solid articles, e.g. lenses material composition or material properties of press dies therefor
    • C03B11/086—Construction of plunger or mould for making solid articles, e.g. lenses material composition or material properties of press dies therefor of coated dies
    • 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
    • C03B11/06—Construction of plunger or mould
    • C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
    • C03B11/088—Flat discs
    • 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
    • C03B2215/08—Coated press-mould dies
    • C03B2215/14—Die top coat materials, e.g. materials for the glass-contacting layers
    • C03B2215/16—Metals or alloys, e.g. Ni-P, Ni-B, amorphous metals
    • C03B2215/17—Metals or alloys, e.g. Ni-P, Ni-B, amorphous metals comprising one or more of the noble meals, i.e. Ag, Au, platinum group metals
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/40—Product characteristics
    • C03B2215/45—Ring or doughnut disc products or their preforms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Glass Compositions (AREA)
JP2002185227A 2002-06-25 2002-06-25 情報記録媒体用ガラス基板とその製造方法、および情報磁気記録媒体 Pending JP2004026570A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002185227A JP2004026570A (ja) 2002-06-25 2002-06-25 情報記録媒体用ガラス基板とその製造方法、および情報磁気記録媒体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002185227A JP2004026570A (ja) 2002-06-25 2002-06-25 情報記録媒体用ガラス基板とその製造方法、および情報磁気記録媒体

Publications (2)

Publication Number Publication Date
JP2004026570A true JP2004026570A (ja) 2004-01-29
JP2004026570A5 JP2004026570A5 (enExample) 2005-10-06

Family

ID=31180939

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002185227A Pending JP2004026570A (ja) 2002-06-25 2002-06-25 情報記録媒体用ガラス基板とその製造方法、および情報磁気記録媒体

Country Status (1)

Country Link
JP (1) JP2004026570A (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007102519A1 (ja) * 2006-03-07 2007-09-13 Asahi Glass Co., Ltd. 光学ガラス用成形型およびそれを用いた光学ガラスのプレス成形法
JP2009046320A (ja) * 2007-08-13 2009-03-05 Sumita Optical Glass Inc 光学ガラス素子成形型
JP2009280461A (ja) * 2008-05-23 2009-12-03 Ohara Inc 情報記録媒体用ガラス基板
CN102030459A (zh) * 2009-09-30 2011-04-27 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
US8931308B2 (en) 2011-02-10 2015-01-13 Hoya Corporation Method of producing glass blank for substrate of information recording medium, substrate for information recording medium, and information recording medium; and manufacturing apparatus for glass blank for substrate of information recording medium

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007102519A1 (ja) * 2006-03-07 2007-09-13 Asahi Glass Co., Ltd. 光学ガラス用成形型およびそれを用いた光学ガラスのプレス成形法
JP2009046320A (ja) * 2007-08-13 2009-03-05 Sumita Optical Glass Inc 光学ガラス素子成形型
JP2009280461A (ja) * 2008-05-23 2009-12-03 Ohara Inc 情報記録媒体用ガラス基板
CN102030459A (zh) * 2009-09-30 2011-04-27 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
CN102030459B (zh) * 2009-09-30 2016-05-18 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
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
US8931308B2 (en) 2011-02-10 2015-01-13 Hoya Corporation Method of producing glass blank for substrate of information recording medium, substrate for information recording medium, and information recording medium; and manufacturing apparatus for glass blank for substrate of information recording medium

Similar Documents

Publication Publication Date Title
TWI447086B (zh) Magnetic recording medium substrate glass, magnetic recording medium substrate, magnetic recording medium, and the like
JP6220411B2 (ja) 情報記録媒体用基板に供するためのガラス、情報記録媒体用基板および情報記録媒体とそれらの製造方法
JP4815002B2 (ja) 情報記録媒体用結晶化ガラス基板およびその製造方法
JP5421443B2 (ja) 磁気ディスク用ガラス基板の製造方法および磁気ディスク
JP4559523B2 (ja) 情報記録媒体用ガラス基板およびその製造方法
JP7383050B2 (ja) 磁気記録媒体基板用または磁気記録再生装置用ガラススペーサ用のガラス、磁気記録媒体基板、磁気記録媒体、磁気記録再生装置用ガラススペーサおよび磁気記録再生装置
CN1290665A (zh) 用于信息记录介质的玻璃基质和应用该玻璃基质的信息记录介质
JP4774466B1 (ja) 情報記録媒体用結晶化ガラス基板およびその製造方法
JP2005015328A (ja) ジルコニウムを含むガラス組成物、化学強化ガラス物品、磁気記録媒体用ガラス基板、およびガラス板の製造方法
JP2011246290A (ja) ガラス基板
JP4930838B2 (ja) 情報記録媒体用ガラス基板および情報記録媒体
JP2007223884A (ja) 無機組成物
JP4619115B2 (ja) 情報記録媒体用ガラス基板および情報記録媒体
JP3219701B2 (ja) 磁気情報記憶媒体用ガラスセラミック基板およびその製造方法
JP4691135B2 (ja) 情報記録媒体用ガラス基板
JP7766206B2 (ja) 磁気記録媒体基板用ガラス、磁気記録媒体基板および磁気記録再生装置
JP4043171B2 (ja) 情報記録ディスク用結晶化ガラスの製造方法
JP2025143430A (ja) 磁気記録媒体基板用または磁気記録再生装置用ガラススペーサ用のガラス、磁気記録媒体基板、磁気記録媒体、磁気記録再生装置用ガラススペーサおよび磁気記録再生装置
KR20050016376A (ko) 정보기록매체용 유리기판 및 정보기록매체
JP2005119963A (ja) 情報記録ディスク用結晶化ガラスの製造方法
JP2007284338A (ja) 磁気ディスク用ガラス基板の製造方法及び磁気ディスクの製造方法

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050518

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050518

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20050518

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080312

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080314

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080513

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20081226

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20090417