JPS5587388A - Magnetic memory device - Google Patents

Magnetic memory device

Info

Publication number
JPS5587388A
JPS5587388A JP16267878A JP16267878A JPS5587388A JP S5587388 A JPS5587388 A JP S5587388A JP 16267878 A JP16267878 A JP 16267878A JP 16267878 A JP16267878 A JP 16267878A JP S5587388 A JPS5587388 A JP S5587388A
Authority
JP
Japan
Prior art keywords
film
plate
oscillator
information
memory
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
JP16267878A
Other languages
Japanese (ja)
Inventor
Hideo Segawa
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP16267878A priority Critical patent/JPS5587388A/en
Publication of JPS5587388A publication Critical patent/JPS5587388A/en
Pending legal-status Critical Current

Links

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To realize the compact structure, high-speed operation and high reliability each for the memory device by using the semiconductor laser oscillator array of direct modulation type to the light source of the laser beam and at the same time covering the memory medium's film surface with the heat absorption layer. CONSTITUTION:Image formation optical system 17 is provided between memory plate 11 and semiconductor laser beam oscillator 10 of direct modulation type; input information S is supplied to the modulation mechanism within oscillator 10 via amplifier 12; and coil 13 which gives start to the environment magnetic field of the medium is attached to the back of plate 11. And substrate 14 of plate 11 contains heat absorption layer 15 and magnetic film 16 coated in the sandwich form. Accordingly, if the beam corresponding to the information irradiated to film 16, the irradiated area of film 16 is heated with increment of the temperature. Thus the heat reception efficiency is increased by layer 15 to perform the writing of the information.
JP16267878A 1978-12-26 1978-12-26 Magnetic memory device Pending JPS5587388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16267878A JPS5587388A (en) 1978-12-26 1978-12-26 Magnetic memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16267878A JPS5587388A (en) 1978-12-26 1978-12-26 Magnetic memory device

Publications (1)

Publication Number Publication Date
JPS5587388A true JPS5587388A (en) 1980-07-02

Family

ID=15759204

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16267878A Pending JPS5587388A (en) 1978-12-26 1978-12-26 Magnetic memory device

Country Status (1)

Country Link
JP (1) JPS5587388A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814306A (en) * 1981-07-20 1983-01-27 Omron Tateisi Electronics Co Magnetic card device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49123748A (en) * 1973-03-26 1974-11-27
JPS5116026A (en) * 1974-04-04 1976-02-09 Western Electric Co
JPS51134614A (en) * 1975-05-19 1976-11-22 Teac Co Photomagnetic recorder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49123748A (en) * 1973-03-26 1974-11-27
JPS5116026A (en) * 1974-04-04 1976-02-09 Western Electric Co
JPS51134614A (en) * 1975-05-19 1976-11-22 Teac Co Photomagnetic recorder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814306A (en) * 1981-07-20 1983-01-27 Omron Tateisi Electronics Co Magnetic card device

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