JPS5774701A - Acrylic resin disc for optical use - Google Patents

Acrylic resin disc for optical use

Info

Publication number
JPS5774701A
JPS5774701A JP55150141A JP15014180A JPS5774701A JP S5774701 A JPS5774701 A JP S5774701A JP 55150141 A JP55150141 A JP 55150141A JP 15014180 A JP15014180 A JP 15014180A JP S5774701 A JPS5774701 A JP S5774701A
Authority
JP
Japan
Prior art keywords
disc
acrylic resin
injection molding
optical use
produced
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
JP55150141A
Other languages
English (en)
Inventor
Junji Seki
Kohei Ozawa
Katsuaki Maeda
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.)
Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Asahi Kasei Kogyo KK
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 Asahi Chemical Industry Co Ltd, Asahi Kasei Kogyo KK filed Critical Asahi Chemical Industry Co Ltd
Priority to JP55150141A priority Critical patent/JPS5774701A/ja
Publication of JPS5774701A publication Critical patent/JPS5774701A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture

Landscapes

  • Injection Moulding Of Plastics Or The Like (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
JP55150141A 1980-10-28 1980-10-28 Acrylic resin disc for optical use Pending JPS5774701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55150141A JPS5774701A (en) 1980-10-28 1980-10-28 Acrylic resin disc for optical use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55150141A JPS5774701A (en) 1980-10-28 1980-10-28 Acrylic resin disc for optical use

Publications (1)

Publication Number Publication Date
JPS5774701A true JPS5774701A (en) 1982-05-11

Family

ID=15490383

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55150141A Pending JPS5774701A (en) 1980-10-28 1980-10-28 Acrylic resin disc for optical use

Country Status (1)

Country Link
JP (1) JPS5774701A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4788678A (en) * 1985-11-20 1988-11-29 Olympus Optical Co., Ltd. Optical information recording media substrate
US4841510A (en) * 1986-04-10 1989-06-20 Olympus Optical Co., Ltd. Optical characteristic measuring apparatus for an optical recording medium substrate
JPH0453039A (ja) * 1990-06-20 1992-02-20 Matsushita Electric Ind Co Ltd 光学情報記録媒体

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4788678A (en) * 1985-11-20 1988-11-29 Olympus Optical Co., Ltd. Optical information recording media substrate
US4841510A (en) * 1986-04-10 1989-06-20 Olympus Optical Co., Ltd. Optical characteristic measuring apparatus for an optical recording medium substrate
JPH0453039A (ja) * 1990-06-20 1992-02-20 Matsushita Electric Ind Co Ltd 光学情報記録媒体

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