JPH0419172B2 - - Google Patents

Info

Publication number
JPH0419172B2
JPH0419172B2 JP62322837A JP32283787A JPH0419172B2 JP H0419172 B2 JPH0419172 B2 JP H0419172B2 JP 62322837 A JP62322837 A JP 62322837A JP 32283787 A JP32283787 A JP 32283787A JP H0419172 B2 JPH0419172 B2 JP H0419172B2
Authority
JP
Japan
Prior art keywords
mold
glass
guide
cutting
molding
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.)
Expired - Lifetime
Application number
JP62322837A
Other languages
English (en)
Japanese (ja)
Other versions
JPH01164738A (ja
Inventor
Isamu Shigyo
Takeshi Nomura
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP32283787A priority Critical patent/JPH01164738A/ja
Publication of JPH01164738A publication Critical patent/JPH01164738A/ja
Publication of JPH0419172B2 publication Critical patent/JPH0419172B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B21/00—Severing glass sheets, tubes or rods while still plastic
    • C03B21/02—Severing glass sheets, tubes or rods while still plastic by cutting
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • C03B7/10—Cutting-off or severing the glass flow with the aid of knives or scissors or non-contacting cutting means, e.g. a gas jet; Construction of the blades used
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/70—Horizontal or inclined press axis
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/76—Pressing whereby some glass overflows unrestrained beyond the press mould in a direction perpendicular to the press axis
    • C03B2215/77—Pressing whereby some glass overflows unrestrained beyond the press mould in a direction perpendicular to the press axis with means to trim off excess material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
JP32283787A 1987-12-22 1987-12-22 光学素子の成形装置 Granted JPH01164738A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32283787A JPH01164738A (ja) 1987-12-22 1987-12-22 光学素子の成形装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32283787A JPH01164738A (ja) 1987-12-22 1987-12-22 光学素子の成形装置

Publications (2)

Publication Number Publication Date
JPH01164738A JPH01164738A (ja) 1989-06-28
JPH0419172B2 true JPH0419172B2 (enrdf_load_html_response) 1992-03-30

Family

ID=18148158

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32283787A Granted JPH01164738A (ja) 1987-12-22 1987-12-22 光学素子の成形装置

Country Status (1)

Country Link
JP (1) JPH01164738A (enrdf_load_html_response)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03228836A (ja) * 1990-01-31 1991-10-09 Canon Inc ガラス光学部品の製造方法
US5322541A (en) * 1991-03-28 1994-06-21 Matsushita Electric Industrial Co., Ltd. Method of producing glass blank
MY158938A (en) * 2009-12-29 2016-11-30 Hoya Corp Manufacturing method of glass substrate for magnetic disk
CN102656631B (zh) * 2009-12-29 2016-06-22 Hoya株式会社 磁盘用玻璃基板的制造方法以及磁盘用玻璃基板
JP5431574B2 (ja) 2010-03-31 2014-03-05 Ｈｏｙａ株式会社 ガラスブランク及び磁気ディスク用ガラス基板の製造方法
JP2012160252A (ja) 2011-01-31 2012-08-23 Hoya Corp 磁気ディスク用ガラス基板の製造方法
JP5739552B2 (ja) * 2011-12-29 2015-06-24 Hoya株式会社 磁気ディスク用ガラスブランクの製造方法および磁気ディスク用ガラス基板の製造方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61180135U (enrdf_load_html_response) * 1985-04-29 1986-11-10

Also Published As

Publication number Publication date
JPH01164738A (ja) 1989-06-28

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