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JPS5634154A - Optical disc for write-in - Google Patents

Optical disc for write-in

Info

Publication number
JPS5634154A
JPS5634154A JP10816679A JP10816679A JPS5634154A JP S5634154 A JPS5634154 A JP S5634154A JP 10816679 A JP10816679 A JP 10816679A JP 10816679 A JP10816679 A JP 10816679A JP S5634154 A JPS5634154 A JP S5634154A
Authority
JP
Japan
Prior art keywords
base
groove
optical disc
photosensitive material
write
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
JP10816679A
Other languages
Japanese (ja)
Inventor
Naoto Mogi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10816679A priority Critical patent/JPS5634154A/en
Publication of JPS5634154A publication Critical patent/JPS5634154A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE: To enable the write-in with low laser light output, by providing the thin film in which a plurality of grooves are formed on the optical disc base and photosensitive material is coated at the surface formed with the grooves.
CONSTITUTION: The groove 1a is formed on the optical disc base 1 and the thin film 3 coated or vapor deposited with the photosensitive material 2 is fitted in the form of covering the groove 1a. Further, the write-in laser light is radiated on the surface coated with the photosensitive material 2 through the base 1. To increase the sensitivity of the optical disc, the groove 1a is provided on the base 1 so that the heat absorbed with the photosensitive material 2 is prevented from being run away to the base 1 due to thermal conduction, and the thickness of the base 1 is effecctively made small. The ridge 1b at the both sides of the groove 1a is the boundary of track and since the reflection facter is different between the groove 1a and the ridge 1b, the tracking signal can be obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP10816679A 1979-08-27 1979-08-27 Optical disc for write-in Pending JPS5634154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10816679A JPS5634154A (en) 1979-08-27 1979-08-27 Optical disc for write-in

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10816679A JPS5634154A (en) 1979-08-27 1979-08-27 Optical disc for write-in

Publications (1)

Publication Number Publication Date
JPS5634154A true JPS5634154A (en) 1981-04-06

Family

ID=14477642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10816679A Pending JPS5634154A (en) 1979-08-27 1979-08-27 Optical disc for write-in

Country Status (1)

Country Link
JP (1) JPS5634154A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492568A1 (en) * 1980-10-21 1982-04-23 Rca Corp IMPROVED OPTICAL RECORDING MEDIUM AND DISC PRODUCED USING THE SAME
JPS5786139A (en) * 1980-09-25 1982-05-29 Rca Corp Optical recording medium
EP0061584A1 (en) * 1981-03-24 1982-10-06 Kabushiki Kaisha Toshiba Pregrooved optical-disk
JPS57183641A (en) * 1981-05-01 1982-11-12 Drexler Tech Optical data storage and laser recording medium
FR2509891A1 (en) * 1981-07-17 1983-01-21 Thomson Csf OPTICAL RECORDING-READING DEVICE ON PREGRAVE INFORMATION MEDIUM
JPS5888844A (en) * 1981-11-20 1983-05-27 Matsushita Electric Ind Co Ltd Optical recording medium
JPS58200446A (en) * 1982-05-18 1983-11-22 Nippon Columbia Co Ltd Optical recording medium
JPS5994255A (en) * 1982-09-29 1984-05-30 スト−リツジ・テクノロジ−・コ−ポレ−シヨン Improved optical recording medium and manufacture thereof
US4531136A (en) * 1982-06-02 1985-07-23 Docdata Bv Optical medium

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5786139A (en) * 1980-09-25 1982-05-29 Rca Corp Optical recording medium
JPH0427614B2 (en) * 1980-09-25 1992-05-12 Rca Corp
FR2492568A1 (en) * 1980-10-21 1982-04-23 Rca Corp IMPROVED OPTICAL RECORDING MEDIUM AND DISC PRODUCED USING THE SAME
EP0061584A1 (en) * 1981-03-24 1982-10-06 Kabushiki Kaisha Toshiba Pregrooved optical-disk
JPS57183641A (en) * 1981-05-01 1982-11-12 Drexler Tech Optical data storage and laser recording medium
JPH0253855B2 (en) * 1981-05-01 1990-11-20 Doretsukusuraa Tekunorojii Corp
FR2509891A1 (en) * 1981-07-17 1983-01-21 Thomson Csf OPTICAL RECORDING-READING DEVICE ON PREGRAVE INFORMATION MEDIUM
JPS5888844A (en) * 1981-11-20 1983-05-27 Matsushita Electric Ind Co Ltd Optical recording medium
JPS58200446A (en) * 1982-05-18 1983-11-22 Nippon Columbia Co Ltd Optical recording medium
US4531136A (en) * 1982-06-02 1985-07-23 Docdata Bv Optical medium
JPS5994255A (en) * 1982-09-29 1984-05-30 スト−リツジ・テクノロジ−・コ−ポレ−シヨン Improved optical recording medium and manufacture thereof

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