JPS5496002A - Information recording plate - Google Patents

Information recording plate

Info

Publication number
JPS5496002A
JPS5496002A JP199278A JP199278A JPS5496002A JP S5496002 A JPS5496002 A JP S5496002A JP 199278 A JP199278 A JP 199278A JP 199278 A JP199278 A JP 199278A JP S5496002 A JPS5496002 A JP S5496002A
Authority
JP
Japan
Prior art keywords
information
plate
thin film
dust
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
JP199278A
Other languages
Japanese (ja)
Inventor
Keizo Kato
Seiji Yonezawa
Takeshi Maeda
Kimio Tateno
Kazuo Shigematsu
Motoyasu Terao
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP199278A priority Critical patent/JPS5496002A/en
Priority to NL7900205A priority patent/NL7900205A/en
Publication of JPS5496002A publication Critical patent/JPS5496002A/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

Landscapes

  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE: To make possible stable recording, reproducing and further addition recording without causing missing of information despite deposition of dust, etc. by sealing a photo video disc information recording medium within the recesse of substrate by maintaining a specified spacing.
CONSTITUTION: A metal thin film 2 such as Bi as a recording medium is evaporated on an information plate 3 such as acrylic plate. The plate 3 is bonded by means of an adhesive agent to the portion 4 of a substrate such as glass provided with a recess 5 by maintaining a clearance 6 such as 1 mm in a clean room. Such information recording plate is rotated and is recorded with information by incident light I comprising focusing Ar laser light to the thin film 2 by a lens. Then, the dust in the air deposits on the plate 3 but will not deposit on the thin film 2. Since the focus is matched to the thin film 2, the dust having deposited becomes out of focus and gives no effect at all to the reproduction signal of information.
COPYRIGHT: (C)1979,JPO&Japio
JP199278A 1978-01-13 1978-01-13 Information recording plate Pending JPS5496002A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP199278A JPS5496002A (en) 1978-01-13 1978-01-13 Information recording plate
NL7900205A NL7900205A (en) 1978-01-13 1979-01-10 OPTICAL INFORMATION CARRIER.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP199278A JPS5496002A (en) 1978-01-13 1978-01-13 Information recording plate

Publications (1)

Publication Number Publication Date
JPS5496002A true JPS5496002A (en) 1979-07-30

Family

ID=11516956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP199278A Pending JPS5496002A (en) 1978-01-13 1978-01-13 Information recording plate

Country Status (2)

Country Link
JP (1) JPS5496002A (en)
NL (1) NL7900205A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548837A (en) * 1978-09-29 1980-04-08 Thomson Csf Optical disk
FR2474222A1 (en) * 1980-01-23 1981-07-24 Thomson Csf METHOD FOR THERMO-OPTICAL INFORMATION REGISTRATION AND INFORMATION CARRIER FOR IMPLEMENTING SAID METHOD
JPS5738339U (en) * 1980-08-06 1982-03-01
JPS5774843A (en) * 1980-10-24 1982-05-11 Mitsubishi Electric Corp Optical information recording disk and its recording device
JPS5774842A (en) * 1980-10-24 1982-05-11 Mitsubishi Electric Corp Optical information recording disk
JPS58171734A (en) * 1982-03-23 1983-10-08 トムソン−セエスエフ Optical disc protected from humidity
JPS58155639U (en) * 1982-04-13 1983-10-18 ティーディーケイ株式会社 optical card
JPS59151345A (en) * 1983-02-03 1984-08-29 Toshiba Corp Information storage medium
JPS6145732U (en) * 1984-08-30 1986-03-26 パイオニア株式会社 information recording medium
JPH0171315U (en) * 1987-10-30 1989-05-12

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4264911A (en) * 1979-08-20 1981-04-28 Mca Discovision, Inc. Optical recording disc and related method of manufacture
FR2474223A1 (en) * 1980-01-23 1981-07-24 Thomson Csf METHOD FOR THERMO-OPTICAL INFORMATION REGISTRATION AND INFORMATION CARRIER FOR IMPLEMENTING SAID METHOD
JPS5766540A (en) * 1980-10-09 1982-04-22 Toshiba Corp Optical information storage carrier and its manufacture
DE3176118D1 (en) * 1980-10-09 1987-05-21 Toshiba Kk Data recording medium
US4365257A (en) * 1981-03-05 1982-12-21 Minnesota Mining And Manufacturing Company Stretched-film optical recording disc
JPS57169938A (en) * 1981-04-10 1982-10-19 Sony Corp Optical type recording medium
FR2524186B1 (en) * 1982-03-23 1989-02-24 Thomson Csf PROTECTED OPTICAL DISC COMPRISING A FLEXIBLE CLOSING ELEMENT
NL8300478A (en) * 1983-02-09 1984-09-03 Philips Nv OPTICALLY READABLE MEMORY DRIVE.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531002A (en) * 1976-05-13 1978-01-07 Philips Corp Radiation sensitive record

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531002A (en) * 1976-05-13 1978-01-07 Philips Corp Radiation sensitive record

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548837A (en) * 1978-09-29 1980-04-08 Thomson Csf Optical disk
JPH01199336A (en) * 1978-09-29 1989-08-10 Thomson Csf Optical disc
FR2474222A1 (en) * 1980-01-23 1981-07-24 Thomson Csf METHOD FOR THERMO-OPTICAL INFORMATION REGISTRATION AND INFORMATION CARRIER FOR IMPLEMENTING SAID METHOD
JPS5738339U (en) * 1980-08-06 1982-03-01
JPS5774843A (en) * 1980-10-24 1982-05-11 Mitsubishi Electric Corp Optical information recording disk and its recording device
JPS5774842A (en) * 1980-10-24 1982-05-11 Mitsubishi Electric Corp Optical information recording disk
JPS58171734A (en) * 1982-03-23 1983-10-08 トムソン−セエスエフ Optical disc protected from humidity
JPS58155639U (en) * 1982-04-13 1983-10-18 ティーディーケイ株式会社 optical card
JPS59151345A (en) * 1983-02-03 1984-08-29 Toshiba Corp Information storage medium
JPS6145732U (en) * 1984-08-30 1986-03-26 パイオニア株式会社 information recording medium
JPH0171315U (en) * 1987-10-30 1989-05-12

Also Published As

Publication number Publication date
NL7900205A (en) 1979-07-17

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