JPS5293320A - Information reference device equipped with duplicator - Google Patents

Information reference device equipped with duplicator

Info

Publication number
JPS5293320A
JPS5293320A JP935876A JP935876A JPS5293320A JP S5293320 A JPS5293320 A JP S5293320A JP 935876 A JP935876 A JP 935876A JP 935876 A JP935876 A JP 935876A JP S5293320 A JPS5293320 A JP S5293320A
Authority
JP
Japan
Prior art keywords
reference device
duplicator
device equipped
information reference
projection
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
JP935876A
Other languages
Japanese (ja)
Inventor
Shigeru Uchida
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 JP935876A priority Critical patent/JPS5293320A/en
Publication of JPS5293320A publication Critical patent/JPS5293320A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent a leakage of secrecy by prohibiting a projection of a microfilm, etc. placed in a projection position at a projection signal generated from the reference device.
COPYRIGHT: (C)1977,JPO&Japio
JP935876A 1976-02-02 1976-02-02 Information reference device equipped with duplicator Pending JPS5293320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP935876A JPS5293320A (en) 1976-02-02 1976-02-02 Information reference device equipped with duplicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP935876A JPS5293320A (en) 1976-02-02 1976-02-02 Information reference device equipped with duplicator

Publications (1)

Publication Number Publication Date
JPS5293320A true JPS5293320A (en) 1977-08-05

Family

ID=11718237

Family Applications (1)

Application Number Title Priority Date Filing Date
JP935876A Pending JPS5293320A (en) 1976-02-02 1976-02-02 Information reference device equipped with duplicator

Country Status (1)

Country Link
JP (1) JPS5293320A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5660427A (en) * 1979-10-04 1981-05-25 Bell & Howell Co Record image detector allowing update used for microfilm
JPS57121934U (en) * 1981-01-23 1982-07-29
JPS58500915A (en) * 1981-06-15 1983-06-02 イムテヒ　コ−ポレ−シヨン　ベ−ヴエ− Information storage and retrieval equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4893327A (en) * 1972-03-13 1973-12-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4893327A (en) * 1972-03-13 1973-12-03

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5660427A (en) * 1979-10-04 1981-05-25 Bell & Howell Co Record image detector allowing update used for microfilm
JPS57121934U (en) * 1981-01-23 1982-07-29
JPS58500915A (en) * 1981-06-15 1983-06-02 イムテヒ　コ−ポレ−シヨン　ベ−ヴエ− Information storage and retrieval equipment

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