JPS6241852B2 - - Google Patents

Info

Publication number
JPS6241852B2
JPS6241852B2 JP57153985A JP15398582A JPS6241852B2 JP S6241852 B2 JPS6241852 B2 JP S6241852B2 JP 57153985 A JP57153985 A JP 57153985A JP 15398582 A JP15398582 A JP 15398582A JP S6241852 B2 JPS6241852 B2 JP S6241852B2
Authority
JP
Japan
Prior art keywords
substrate
molding
plate
mold
stamper
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
Application number
JP57153985A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5942935A (ja
Inventor
Mikio Takeshima
Takeshi Okada
Norihiro Funakoshi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP15398582A priority Critical patent/JPS5942935A/ja
Publication of JPS5942935A publication Critical patent/JPS5942935A/ja
Publication of JPS6241852B2 publication Critical patent/JPS6241852B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
JP15398582A 1982-09-06 1982-09-06 光デイスク用プラスチツク基板の成形金型 Granted JPS5942935A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15398582A JPS5942935A (ja) 1982-09-06 1982-09-06 光デイスク用プラスチツク基板の成形金型

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15398582A JPS5942935A (ja) 1982-09-06 1982-09-06 光デイスク用プラスチツク基板の成形金型

Publications (2)

Publication Number Publication Date
JPS5942935A JPS5942935A (ja) 1984-03-09
JPS6241852B2 true JPS6241852B2 (enrdf_load_stackoverflow) 1987-09-04

Family

ID=15574384

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15398582A Granted JPS5942935A (ja) 1982-09-06 1982-09-06 光デイスク用プラスチツク基板の成形金型

Country Status (1)

Country Link
JP (1) JPS5942935A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5728324A (en) * 1995-01-31 1998-03-17 Digital Optics Corporation Molding diffractive optical elements
JP2008157816A (ja) * 2006-12-25 2008-07-10 Tdk Corp 回転角検出装置及びトルク検出装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51103062U (enrdf_load_stackoverflow) * 1975-02-17 1976-08-18
JPS5378086A (en) * 1976-12-20 1978-07-11 Brother Ind Ltd Molding die for cord reel

Also Published As

Publication number Publication date
JPS5942935A (ja) 1984-03-09

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