JPS57151929A - Microfilm reader - Google Patents

Microfilm reader

Info

Publication number
JPS57151929A
JPS57151929A JP3743781A JP3743781A JPS57151929A JP S57151929 A JPS57151929 A JP S57151929A JP 3743781 A JP3743781 A JP 3743781A JP 3743781 A JP3743781 A JP 3743781A JP S57151929 A JPS57151929 A JP S57151929A
Authority
JP
Japan
Prior art keywords
relay
illumination lamp
still
driving circuit
generate
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.)
Granted
Application number
JP3743781A
Other languages
Japanese (ja)
Other versions
JPH0345370B2 (en
Inventor
Yoshio Ando
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP3743781A priority Critical patent/JPS57151929A/en
Publication of JPS57151929A publication Critical patent/JPS57151929A/en
Publication of JPH0345370B2 publication Critical patent/JPH0345370B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2053—Intensity control of illuminating light

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Projection Apparatus (AREA)

Abstract

PURPOSE:To prolong the life of an illumination lamp by turning on the lamp which illuminates a microfilm at a retrieval command. CONSTITUTION:When a power switch is turned on, an FF43 is reset by an initial pulse Ri to generate a low-level output Q, and a relay driving circuit does not operate; and a relay 45 is therefore still unenergized and its contact 45' is still broken, so that an illumination lamp 16 is still turned off. Then when a cartridge 7 is loaded in a microfilm reader and a knob 32 on a console panel is operated to retrieve a desired image frame, a low-level retrieval command signal is inputted to an OR gate 40, whose output sets the FF43 to generate a high-level output Q, putting the relay driving circuit in operation. The relay 45, therefore, operates to make its contact 45', and the illumination lamp 16 turns on, enabling the image to be retrieved and read.
JP3743781A 1981-03-16 1981-03-16 Microfilm reader Granted JPS57151929A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3743781A JPS57151929A (en) 1981-03-16 1981-03-16 Microfilm reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3743781A JPS57151929A (en) 1981-03-16 1981-03-16 Microfilm reader

Publications (2)

Publication Number Publication Date
JPS57151929A true JPS57151929A (en) 1982-09-20
JPH0345370B2 JPH0345370B2 (en) 1991-07-10

Family

ID=12497485

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3743781A Granted JPS57151929A (en) 1981-03-16 1981-03-16 Microfilm reader

Country Status (1)

Country Link
JP (1) JPS57151929A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6113368A (en) * 1984-06-28 1986-01-21 Canon Inc Information retrieving device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6113368A (en) * 1984-06-28 1986-01-21 Canon Inc Information retrieving device

Also Published As

Publication number Publication date
JPH0345370B2 (en) 1991-07-10

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