JPS5593537A - Optical recording device - Google Patents

Optical recording device

Info

Publication number
JPS5593537A
JPS5593537A JP159979A JP159979A JPS5593537A JP S5593537 A JPS5593537 A JP S5593537A JP 159979 A JP159979 A JP 159979A JP 159979 A JP159979 A JP 159979A JP S5593537 A JPS5593537 A JP S5593537A
Authority
JP
Japan
Prior art keywords
light beam
recording
point
irradiated
auxiliary light
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
JP159979A
Other languages
Japanese (ja)
Inventor
Michiyoshi Nagashima
Tomio Yoshida
Shiro Tsuji
Shunji Harikae
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP159979A priority Critical patent/JPS5593537A/en
Publication of JPS5593537A publication Critical patent/JPS5593537A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: To record information with a high density without enhancing sensitivity of a recording material and energy of the light beam for recording by using an auxiliary light beam of an intensity less than the threshold required for recording.
CONSTITUTION: Light beam a from laser diode 1 and auxiliary light beam b from laser diode 2 are irradiated to recording medium 10, which is rotated in the arrow K direction, through optical systems 5W9, and further, the unit is so set that one point of recording medium 10 may pass through irradiation position Q point of auxiliary light beam (b) before passing through irradiation position P point of light beam (a) for recording. Consequently, a part of the recording material is irradiated by auxiliary light beam (b) at Q point first but does not reach threshold temperature Tc and is further irradiated by light beam (a) for recording at P point next, and further, energy is supplied, and this part exceeds threshold temperature Tc, thus recording information.
COPYRIGHT: (C)1980,JPO&Japio
JP159979A 1979-01-10 1979-01-10 Optical recording device Pending JPS5593537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP159979A JPS5593537A (en) 1979-01-10 1979-01-10 Optical recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP159979A JPS5593537A (en) 1979-01-10 1979-01-10 Optical recording device

Publications (1)

Publication Number Publication Date
JPS5593537A true JPS5593537A (en) 1980-07-16

Family

ID=11505957

Family Applications (1)

Application Number Title Priority Date Filing Date
JP159979A Pending JPS5593537A (en) 1979-01-10 1979-01-10 Optical recording device

Country Status (1)

Country Link
JP (1) JPS5593537A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8201193A (en) * 1981-03-28 1982-10-18 Kokusai Denshin Denwa Co Ltd MAGNETO-OPTICAL REGISTRATION AND REPRODUCING SYSTEM.
FR2521760A1 (en) * 1982-02-12 1983-08-19 Thomson Csf Thermo-optical recording process for video disc - uses two lasers of different wavelengths, only one being intensity modulated
JPH01302536A (en) * 1988-05-30 1989-12-06 Toshiba Corp Information recorder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8201193A (en) * 1981-03-28 1982-10-18 Kokusai Denshin Denwa Co Ltd MAGNETO-OPTICAL REGISTRATION AND REPRODUCING SYSTEM.
FR2521760A1 (en) * 1982-02-12 1983-08-19 Thomson Csf Thermo-optical recording process for video disc - uses two lasers of different wavelengths, only one being intensity modulated
JPH01302536A (en) * 1988-05-30 1989-12-06 Toshiba Corp Information recorder

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