JPS57141036A - Production for disc - Google Patents

Production for disc

Info

Publication number
JPS57141036A
JPS57141036A JP2725881A JP2725881A JPS57141036A JP S57141036 A JPS57141036 A JP S57141036A JP 2725881 A JP2725881 A JP 2725881A JP 2725881 A JP2725881 A JP 2725881A JP S57141036 A JPS57141036 A JP S57141036A
Authority
JP
Japan
Prior art keywords
label
disc
face
magnified
fresnel lens
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.)
Granted
Application number
JP2725881A
Other languages
Japanese (ja)
Other versions
JPS6248302B2 (en
Inventor
Susumu Genma
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor 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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP2725881A priority Critical patent/JPS57141036A/en
Publication of JPS57141036A publication Critical patent/JPS57141036A/en
Publication of JPS6248302B2 publication Critical patent/JPS6248302B2/ja
Granted 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
    • G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
    • G11B23/40—Identifying or analogous means applied to or incorporated in the record carrier and not intended for visual display simultaneously with the playing-back of the record carrier, e.g. label, leader, photograph

Abstract

PURPOSE:To produce easily and simply a disc where minute characters or the like of a label are magnified and seen, by forming a Fresnel lens in a label region at a mold recording time. CONSTITUTION:A transparent high polymer material or the like is molded with a matrix M1, which is provided with a stamper 6 of a mirror face provided with a rugged face corresponding to recording information or the like, and a matrix M2, where a rugged pattern F corresponding to a Fresnel lens is formed in the center region, by heating and pressurizing, and the information face is covered with a coating P or the like. Characters, symbols, etc. of a label L on the opposite face are magnified through a Fresnel lens FU in a read face side DS of this molded disc. Consequently, a disc where minute characters or the like of the label are magnified and seen is produced simply and easily.
JP2725881A 1981-02-26 1981-02-26 Production for disc Granted JPS57141036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2725881A JPS57141036A (en) 1981-02-26 1981-02-26 Production for disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2725881A JPS57141036A (en) 1981-02-26 1981-02-26 Production for disc

Publications (2)

Publication Number Publication Date
JPS57141036A true JPS57141036A (en) 1982-09-01
JPS6248302B2 JPS6248302B2 (en) 1987-10-13

Family

ID=12216047

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2725881A Granted JPS57141036A (en) 1981-02-26 1981-02-26 Production for disc

Country Status (1)

Country Link
JP (1) JPS57141036A (en)

Also Published As

Publication number Publication date
JPS6248302B2 (en) 1987-10-13

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