JPS57143701A - Disk - Google Patents

Disk

Info

Publication number
JPS57143701A
JPS57143701A JP2962181A JP2962181A JPS57143701A JP S57143701 A JPS57143701 A JP S57143701A JP 2962181 A JP2962181 A JP 2962181A JP 2962181 A JP2962181 A JP 2962181A JP S57143701 A JPS57143701 A JP S57143701A
Authority
JP
Japan
Prior art keywords
label
disk
read
uneven recording
naked eye
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
JP2962181A
Other languages
Japanese (ja)
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 JP2962181A priority Critical patent/JPS57143701A/en
Publication of JPS57143701A publication Critical patent/JPS57143701A/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
    • 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 read contents mentioned in a label with the naked eye, by providing a Fresnel lens on a label part of the side of a signal read surface, and placing the label so that the information display surface is positioned in the vicinity of the focal surface of this lens. CONSTITUTION:An uneven recording surface R is formed on a surface Db of the opposite side of the side of a signal read surface Ds on a disk D made of a transparent disk material, also an optical reflective film Pr is formed on the outside surface of the uneven recording surface R, and also a protective film P is formed on the optical reflective film Pr. Also, in the center part of the surface of the uneven recording surface R side of the disk D, an annular label L is provided concentrically with a center hole A of the disk D, in a state that its display surface La is directed toward the side surface Dd, and contents mentioned in this label L are magnified by a Fresnel lens FL provided to the side of the surface Ds so that they can be read with the naked eye.
JP2962181A 1981-03-02 1981-03-02 Disk Pending JPS57143701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2962181A JPS57143701A (en) 1981-03-02 1981-03-02 Disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2962181A JPS57143701A (en) 1981-03-02 1981-03-02 Disk

Publications (1)

Publication Number Publication Date
JPS57143701A true JPS57143701A (en) 1982-09-06

Family

ID=12281151

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2962181A Pending JPS57143701A (en) 1981-03-02 1981-03-02 Disk

Country Status (1)

Country Link
JP (1) JPS57143701A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998038634A2 (en) * 1997-02-28 1998-09-03 Wea Manufacturing, Inc. Sandwich labeled compact disc for optical recording
US6019863A (en) * 1995-03-16 2000-02-01 Kabushiki Kaisha Toshiba Optical disk structure, method of manufacturing the same, and apparatus for manufacturing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6019863A (en) * 1995-03-16 2000-02-01 Kabushiki Kaisha Toshiba Optical disk structure, method of manufacturing the same, and apparatus for manufacturing the same
WO1998038634A2 (en) * 1997-02-28 1998-09-03 Wea Manufacturing, Inc. Sandwich labeled compact disc for optical recording
WO1998038634A3 (en) * 1997-02-28 1998-12-03 Wea Mfg Inc Sandwich labeled compact disc for optical recording

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