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JPS566571A - Original reader - Google Patents

Original reader

Info

Publication number
JPS566571A
JPS566571A JP8208379A JP8208379A JPS566571A JP S566571 A JPS566571 A JP S566571A JP 8208379 A JP8208379 A JP 8208379A JP 8208379 A JP8208379 A JP 8208379A JP S566571 A JPS566571 A JP S566571A
Authority
JP
Japan
Prior art keywords
original
photodetector
reproduction
prevented
read
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
JP8208379A
Other languages
Japanese (ja)
Inventor
Haruo Kadoi
Masa Sato
Hirotoshi Kishi
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 JP8208379A priority Critical patent/JPS566571A/en
Publication of JPS566571A publication Critical patent/JPS566571A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To realize the reproduction of a good picture by carrying out the cooling of the illumination part where the original is illuminated via the production of the air current moving toward the illumination part from the side of the photodetector and also keeping a constant distance among the photodetectors. CONSTITUTION:The original is put on original glass 5 and then read by optical reading part 6 possessing illuminating means 11'. In that case, part 6 is moved along guide rail 11, and the reflected light is read by solid state photodetector 10. Fan 12 is provided at the right end of moving direction of part 6 to flow the cool air current sucked from outside the unit to the direction of arrow B, and the heat generated from means 11' is exhausted outside the unit through louver 13 provided at the left end. Thus the heat generated at means 11' can be prevented from reaching photodetector 10. As a result, the deterioration can be prevented for both the attachment accuracy and the optical characteristics of part 6, thus ensuring the reproduction of a good picture.
JP8208379A 1979-06-27 1979-06-27 Original reader Pending JPS566571A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8208379A JPS566571A (en) 1979-06-27 1979-06-27 Original reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8208379A JPS566571A (en) 1979-06-27 1979-06-27 Original reader

Publications (1)

Publication Number Publication Date
JPS566571A true JPS566571A (en) 1981-01-23

Family

ID=13764546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8208379A Pending JPS566571A (en) 1979-06-27 1979-06-27 Original reader

Country Status (1)

Country Link
JP (1) JPS566571A (en)

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