JPS5798142A - Optical recording disk - Google Patents

Optical recording disk

Info

Publication number
JPS5798142A
JPS5798142A JP55172988A JP17298880A JPS5798142A JP S5798142 A JPS5798142 A JP S5798142A JP 55172988 A JP55172988 A JP 55172988A JP 17298880 A JP17298880 A JP 17298880A JP S5798142 A JPS5798142 A JP S5798142A
Authority
JP
Japan
Prior art keywords
substrate
vapor
forming
recording layer
optical recording
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
JP55172988A
Other languages
Japanese (ja)
Inventor
Michiharu Abe
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55172988A priority Critical patent/JPS5798142A/en
Publication of JPS5798142A publication Critical patent/JPS5798142A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers

Abstract

PURPOSE:To form a recording layer with uniform film thickness easily, by forming the recording layer on a recessed discoid substrate forming part of a spherical surface. CONSTITUTION:An optical recording disk 12 is manufactured by forming a recording layer 10 on a recessed discoid substrate 9 made of metal, glass, plastics, etc., and forming part of a spherical surface, by vapor deposition, sputtering, etc., to uniform film thickness, and then by coating the surface with a protective layer 11 made of transparent plastics, synthetic rubber, etc. When a boat 7 containing a recording medium 8 is arranged at the center position of the radius of curvature of the substrate 9 to perform vapor deposition, any position on the surface of the substrate 9 is at equal distance from the vapor-deposition source, thus vapor-depositing the recording medium uniformly on the substrate 9.
JP55172988A 1980-12-08 1980-12-08 Optical recording disk Pending JPS5798142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55172988A JPS5798142A (en) 1980-12-08 1980-12-08 Optical recording disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55172988A JPS5798142A (en) 1980-12-08 1980-12-08 Optical recording disk

Publications (1)

Publication Number Publication Date
JPS5798142A true JPS5798142A (en) 1982-06-18

Family

ID=15952086

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55172988A Pending JPS5798142A (en) 1980-12-08 1980-12-08 Optical recording disk

Country Status (1)

Country Link
JP (1) JPS5798142A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60187676A (en) * 1984-03-05 1985-09-25 Taiyo Yuden Co Ltd Method for traveling base film on curved surface
EP0977193A1 (en) * 1998-07-30 2000-02-02 Guido Sieber Optical data recording and reproducing apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60187676A (en) * 1984-03-05 1985-09-25 Taiyo Yuden Co Ltd Method for traveling base film on curved surface
JPH0416546B2 (en) * 1984-03-05 1992-03-24 Taiyo Yuden Kk
EP0977193A1 (en) * 1998-07-30 2000-02-02 Guido Sieber Optical data recording and reproducing apparatus

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