JPS57100604A - Manufacture of disk record - Google Patents

Manufacture of disk record

Info

Publication number
JPS57100604A
JPS57100604A JP17681680A JP17681680A JPS57100604A JP S57100604 A JPS57100604 A JP S57100604A JP 17681680 A JP17681680 A JP 17681680A JP 17681680 A JP17681680 A JP 17681680A JP S57100604 A JPS57100604 A JP S57100604A
Authority
JP
Japan
Prior art keywords
record
reference signal
disk
signal
axis
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
JP17681680A
Other languages
Japanese (ja)
Inventor
Hidefumi Furusawa
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.)
Nippon Columbia Co Ltd
Original Assignee
Nippon Columbia 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 Nippon Columbia Co Ltd filed Critical Nippon Columbia Co Ltd
Priority to JP17681680A priority Critical patent/JPS57100604A/en
Publication of JPS57100604A publication Critical patent/JPS57100604A/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
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/10—Indicating arrangements; Warning arrangements
    • 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
    • G11B23/0014—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 record carriers not specifically of filamentary or web form
    • G11B23/0021—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 record carriers not specifically of filamentary or web form discs

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To eliminate the eccentricity of the center hole of a disk record by recording a reference signal at the innermost circumferential position of the disk and boring the center hole and cutting the outer circumference on the basis of the signal. CONSTITUTION:While an information signal 2 is recorded on a recording original disk 1, a reference signal 3 having pulses as many as a multiple of ''3'' is recorded at the innermost or outermost circumferential position, and a stamper 4 is formed by Ni electrocasting; and a plastic mold is formed by press molding on the basis of the stamper 4, and then a reflective film and a protective film are provided, thus obtaining a disk record 6. This record 6 is mounted on a moving table 5 which is movable in the X-axis and Y-axis directions of a cutting and hole-boring device 5 for numeric control, and detecting means 7 for a reference signal 6a are arranged at trisection positions of the reference signal 3. Then, pulse signals 6a-6c which are multiples of ''3'' are photodetected by optical photodetecting elements 7a-7c, and X-axis and Y-axis driving motors 9 and 10 are so controlled through a laser amplifier 8 that those three signals are 1s at the same time; and a hole is bored in the center of a record 6 where the signal 3 is inputted to the elements 7a-7c, and the outer circumference is cut.
JP17681680A 1980-12-15 1980-12-15 Manufacture of disk record Pending JPS57100604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17681680A JPS57100604A (en) 1980-12-15 1980-12-15 Manufacture of disk record

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17681680A JPS57100604A (en) 1980-12-15 1980-12-15 Manufacture of disk record

Publications (1)

Publication Number Publication Date
JPS57100604A true JPS57100604A (en) 1982-06-22

Family

ID=16020340

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17681680A Pending JPS57100604A (en) 1980-12-15 1980-12-15 Manufacture of disk record

Country Status (1)

Country Link
JP (1) JPS57100604A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5059002A (en) * 1973-09-25 1975-05-22
JPS5173318A (en) * 1974-12-21 1976-06-25 Tokyo Shibaura Electric Co Kaitentaino jidohenshinhoseisochi
JPS5462804A (en) * 1977-10-28 1979-05-21 Nippon Chemical Ind Eccentricity detector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5059002A (en) * 1973-09-25 1975-05-22
JPS5173318A (en) * 1974-12-21 1976-06-25 Tokyo Shibaura Electric Co Kaitentaino jidohenshinhoseisochi
JPS5462804A (en) * 1977-10-28 1979-05-21 Nippon Chemical Ind Eccentricity detector

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