JPS6453352A - Method for destroying and erasing optical disk information - Google Patents

Method for destroying and erasing optical disk information

Info

Publication number
JPS6453352A
JPS6453352A JP21065887A JP21065887A JPS6453352A JP S6453352 A JPS6453352 A JP S6453352A JP 21065887 A JP21065887 A JP 21065887A JP 21065887 A JP21065887 A JP 21065887A JP S6453352 A JPS6453352 A JP S6453352A
Authority
JP
Japan
Prior art keywords
optical disk
recording layer
recording
destroying
destroy
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
JP21065887A
Other languages
Japanese (ja)
Inventor
Toru Yashiro
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 JP21065887A priority Critical patent/JPS6453352A/en
Publication of JPS6453352A publication Critical patent/JPS6453352A/en
Pending legal-status Critical Current

Links

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  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To destroy and erase recording information in a short time, by spraying substance which shows responsiveness or solubility for a recording layer in a gaseous state or atomizing state in a space part between optical disk substrates, and making it bring into contact with the recording layer. CONSTITUTION:The recording layers 3 are formed in the internal planes of a pair of disk substrates 1, 1, and they are adhered sandwiching outside spacers 2, 2 and inside spacers 2', 2'. Chemical substance which shows the responsiveness or the solubility for the recording layer is introduced in the space part between the substrates via a spray nozzle 6 by spraying. Such chemical substance is brought into contact with the recording layer 3, and is destroyed in a state impossible to be regenerated. In such a way, it is possible to erase all information recorded on an optical disk in a short time and to destroy is unregenerately.
JP21065887A 1987-08-24 1987-08-24 Method for destroying and erasing optical disk information Pending JPS6453352A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21065887A JPS6453352A (en) 1987-08-24 1987-08-24 Method for destroying and erasing optical disk information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21065887A JPS6453352A (en) 1987-08-24 1987-08-24 Method for destroying and erasing optical disk information

Publications (1)

Publication Number Publication Date
JPS6453352A true JPS6453352A (en) 1989-03-01

Family

ID=16592958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21065887A Pending JPS6453352A (en) 1987-08-24 1987-08-24 Method for destroying and erasing optical disk information

Country Status (1)

Country Link
JP (1) JPS6453352A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7099110B2 (en) * 2003-03-18 2006-08-29 Ensconce Data Technology Dead on demand disk technology

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7099110B2 (en) * 2003-03-18 2006-08-29 Ensconce Data Technology Dead on demand disk technology

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