JPS5698072A - Driving system of original reader - Google Patents

Driving system of original reader

Info

Publication number
JPS5698072A
JPS5698072A JP16813079A JP16813079A JPS5698072A JP S5698072 A JPS5698072 A JP S5698072A JP 16813079 A JP16813079 A JP 16813079A JP 16813079 A JP16813079 A JP 16813079A JP S5698072 A JPS5698072 A JP S5698072A
Authority
JP
Japan
Prior art keywords
led
photodetector
driven
glowing
power consumption
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
JP16813079A
Other languages
Japanese (ja)
Other versions
JPS5943868B2 (en
Inventor
Fumiaki Yamada
Minoru Terajima
Masatoshi Fujimori
Toshito Hara
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16813079A priority Critical patent/JPS5943868B2/en
Publication of JPS5698072A publication Critical patent/JPS5698072A/en
Publication of JPS5943868B2 publication Critical patent/JPS5943868B2/en
Expired 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/191—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H04N1/192—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
    • H04N1/193—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays
    • H04N1/1931—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays with scanning elements electrically interconnected in groups

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Heads (AREA)

Abstract

PURPOSE:To realize a miniaturization as well as reducing the power consumption, by using an LED for a light source with the element of a LED distributed in correspondence to the sensor photodetector and then driving only a light emitting element near the photodetector which is being driven. CONSTITUTION:At the light source part 7 and on the substrate which is formed by changing the driving circuit into a hybrid, a block is formed with e.g. 8 units of LED, and the shift registers 73-1-73-n plus the LED driving circuits 74-1-74-n are provided in each block. The LED glows, for instance, 4 units only, and the state of glowing is shifted successively from right to left. This shift synchronizes with the photodetector of the image sensor, and the photodetector corresponding nearly to the center position of the LED glowing is driven. In such way, the length is shortened for the optical path from the LED and D through the image sensor, and at the same time the LED is driven in the minimum necessary number. As a result, the size of the device is minimized, at the same time reducing greatly the power consumption.
JP16813079A 1979-12-26 1979-12-26 Drive method of document reading device Expired JPS5943868B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16813079A JPS5943868B2 (en) 1979-12-26 1979-12-26 Drive method of document reading device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16813079A JPS5943868B2 (en) 1979-12-26 1979-12-26 Drive method of document reading device

Publications (2)

Publication Number Publication Date
JPS5698072A true JPS5698072A (en) 1981-08-07
JPS5943868B2 JPS5943868B2 (en) 1984-10-25

Family

ID=15862388

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16813079A Expired JPS5943868B2 (en) 1979-12-26 1979-12-26 Drive method of document reading device

Country Status (1)

Country Link
JP (1) JPS5943868B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59269A (en) * 1982-06-25 1984-01-05 Toshiba Corp Picture reading sensor
JPS59153373A (en) * 1983-02-21 1984-09-01 Canon Inc Optical sensor device
JPS59212071A (en) * 1983-05-18 1984-11-30 Canon Inc Lighting device for light source
JPS59223059A (en) * 1983-06-01 1984-12-14 Canon Inc Picture reader
JPS6291066A (en) * 1985-10-16 1987-04-25 Toshiba Corp Image reader
JP2012099950A (en) * 2010-10-29 2012-05-24 Kyocera Mita Corp Image reading device and image forming device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59269A (en) * 1982-06-25 1984-01-05 Toshiba Corp Picture reading sensor
JPS59153373A (en) * 1983-02-21 1984-09-01 Canon Inc Optical sensor device
JPS59212071A (en) * 1983-05-18 1984-11-30 Canon Inc Lighting device for light source
JPS59223059A (en) * 1983-06-01 1984-12-14 Canon Inc Picture reader
JPS6291066A (en) * 1985-10-16 1987-04-25 Toshiba Corp Image reader
JP2012099950A (en) * 2010-10-29 2012-05-24 Kyocera Mita Corp Image reading device and image forming device

Also Published As

Publication number Publication date
JPS5943868B2 (en) 1984-10-25

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