JPH0579008B2 - - Google Patents

Info

Publication number
JPH0579008B2
JPH0579008B2 JP61080187A JP8018786A JPH0579008B2 JP H0579008 B2 JPH0579008 B2 JP H0579008B2 JP 61080187 A JP61080187 A JP 61080187A JP 8018786 A JP8018786 A JP 8018786A JP H0579008 B2 JPH0579008 B2 JP H0579008B2
Authority
JP
Japan
Prior art keywords
substrate
molten resin
mold
optical
birefringence
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
JP61080187A
Other languages
English (en)
Japanese (ja)
Other versions
JPS62246708A (ja
Inventor
Akihiro Inotsuka
Yoshio Kizawa
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.)
Daicel Corp
Original Assignee
Daicel Chemical Industries 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 Daicel Chemical Industries Ltd filed Critical Daicel Chemical Industries Ltd
Priority to JP8018786A priority Critical patent/JPS62246708A/ja
Publication of JPS62246708A publication Critical patent/JPS62246708A/ja
Publication of JPH0579008B2 publication Critical patent/JPH0579008B2/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)
  • Injection Moulding Of Plastics Or The Like (AREA)
JP8018786A 1986-04-09 1986-04-09 光デイスク用プラスチツク基板の射出成形法 Granted JPS62246708A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8018786A JPS62246708A (ja) 1986-04-09 1986-04-09 光デイスク用プラスチツク基板の射出成形法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8018786A JPS62246708A (ja) 1986-04-09 1986-04-09 光デイスク用プラスチツク基板の射出成形法

Publications (2)

Publication Number Publication Date
JPS62246708A JPS62246708A (ja) 1987-10-27
JPH0579008B2 true JPH0579008B2 (enrdf_load_stackoverflow) 1993-11-01

Family

ID=13711369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8018786A Granted JPS62246708A (ja) 1986-04-09 1986-04-09 光デイスク用プラスチツク基板の射出成形法

Country Status (1)

Country Link
JP (1) JPS62246708A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1012107C2 (nl) * 1999-05-19 2000-11-23 Axxicon Moulds Eindhoven Bv Werkwijze en inrichting voor het spuitgieten van voorwerpen.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3279100D1 (en) * 1982-03-29 1988-11-17 Ibm A process for forming a polymer of high mechanical properties
JPH0245970B2 (ja) * 1983-10-11 1990-10-12 Ishida Scale Mfg Co Ltd Deisukuseizohoho
JPS6097820A (ja) * 1983-11-01 1985-05-31 Ishida Koki Seisakusho:Kk デイスク製造方法

Also Published As

Publication number Publication date
JPS62246708A (ja) 1987-10-27

Similar Documents

Publication Publication Date Title
EP0235800B1 (en) Plastic substrate for optical disk and process for producing the same
JPH078514B2 (ja) 光ディスク用プラスチック基板の射出成形法
JPS63135211A (ja) デイスクの射出成形方法
US5683630A (en) Process for making optical disk substrates
EP0280028B1 (en) An optical information disc
KR100239809B1 (ko) 광자기디스크
JPH0579008B2 (enrdf_load_stackoverflow)
JPH0579011B2 (enrdf_load_stackoverflow)
US20020155247A1 (en) Disk-like recording medium and method for producing the same
JP2001246643A (ja) 記録媒体、射出成形金型及び射出成形機、並びに、成形方法
JPH0579010B2 (enrdf_load_stackoverflow)
JPH0579009B2 (enrdf_load_stackoverflow)
JP3095763B2 (ja) ディスク基板成型用スタンパ及びディスク基板の成型方法
JP3072736B2 (ja) 光ディスク基板成形装置
JPH0564570B2 (enrdf_load_stackoverflow)
JPH11306594A (ja) ディスク状記録媒体及びその記録及び／又は再生装置
JP2000322781A (ja) 金型装置及びディスク基板の製造方法
JP2001225360A (ja) ディスク基板の成形装置及び成形方法
JP2002127193A (ja) 光ディスク基板成形金型および光ディスク基板の成形方法
KR20030009843A (ko) 원통형 광디스크의 구조 및 그 제조방법
JPH05282702A (ja) 情報信号記録媒体の基板
JPH03119534A (ja) 情報記録担体とその製造方法及びその成形金型
JP2000061994A (ja) 光ディスク基板の製造方法
EP1037200A3 (en) Rotary magnetic recording/reproducing apparatus and method of fabricating the same
JPH10188275A (ja) 磁気ディスク用基板の成形用金型の製造方法、磁気ディスク及び磁気ディスク装置