JPH0118482B2 - - Google Patents

Info

Publication number
JPH0118482B2
JPH0118482B2 JP17826580A JP17826580A JPH0118482B2 JP H0118482 B2 JPH0118482 B2 JP H0118482B2 JP 17826580 A JP17826580 A JP 17826580A JP 17826580 A JP17826580 A JP 17826580A JP H0118482 B2 JPH0118482 B2 JP H0118482B2
Authority
JP
Japan
Prior art keywords
mold
flat
flat recording
fixing ring
case
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
JP17826580A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57103108A (en
Inventor
Keisuke Ito
Toshiaki Kashihara
Yoshihiro Okino
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.)
Panasonic Holdings Corp
Original Assignee
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP55178265A priority Critical patent/JPS57103108A/ja
Priority to EP81304051A priority patent/EP0047645B1/en
Priority to US06/299,580 priority patent/US4472124A/en
Priority to DE8181304051T priority patent/DE3167483D1/de
Publication of JPS57103108A publication Critical patent/JPS57103108A/ja
Publication of JPH0118482B2 publication Critical patent/JPH0118482B2/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
    • B29C45/2632—Stampers; Mountings thereof
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • 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
    • B29C45/1742—Mounting of moulds; Mould supports
    • B29C2045/1746—Mounting of moulds; Mould supports using magnetic means
    • 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
    • B29C45/2632—Stampers; Mountings thereof
    • B29C2045/2638—Magnetic means for mounting stampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
JP55178265A 1980-09-05 1980-12-16 Plane information recording die Granted JPS57103108A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP55178265A JPS57103108A (en) 1980-12-16 1980-12-16 Plane information recording die
EP81304051A EP0047645B1 (en) 1980-09-05 1981-09-04 A method of producing an information recording disk
US06/299,580 US4472124A (en) 1980-09-05 1981-09-04 Device for producing an information recording disk
DE8181304051T DE3167483D1 (en) 1980-09-05 1981-09-04 A method of producing an information recording disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55178265A JPS57103108A (en) 1980-12-16 1980-12-16 Plane information recording die

Publications (2)

Publication Number Publication Date
JPS57103108A JPS57103108A (en) 1982-06-26
JPH0118482B2 true JPH0118482B2 (https=) 1989-04-06

Family

ID=16045459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55178265A Granted JPS57103108A (en) 1980-09-05 1980-12-16 Plane information recording die

Country Status (1)

Country Link
JP (1) JPS57103108A (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01253886A (ja) * 1988-03-31 1989-10-11 Matsushita Electric Ind Co Ltd 平板状情報記録担体

Also Published As

Publication number Publication date
JPS57103108A (en) 1982-06-26

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