JPS5620386A - Magnification detecting system of optical reader - Google Patents

Magnification detecting system of optical reader

Info

Publication number
JPS5620386A
JPS5620386A JP9702079A JP9702079A JPS5620386A JP S5620386 A JPS5620386 A JP S5620386A JP 9702079 A JP9702079 A JP 9702079A JP 9702079 A JP9702079 A JP 9702079A JP S5620386 A JPS5620386 A JP S5620386A
Authority
JP
Japan
Prior art keywords
magnification
sensor
output
lens
observed
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
JP9702079A
Other languages
Japanese (ja)
Other versions
JPS5845068B2 (en
Inventor
Ichiro Sehata
Atsushi Sudo
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 JP54097020A priority Critical patent/JPS5845068B2/en
Publication of JPS5620386A publication Critical patent/JPS5620386A/en
Publication of JPS5845068B2 publication Critical patent/JPS5845068B2/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
    • H04N1/024—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
    • H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Character Input (AREA)

Abstract

PURPOSE:To attain accurate detection by making even an influence of a black line by forming marks, differing in reflection coefficient, in stripes and by detecting magnification from the states of their read output. CONSTITUTION:OCR gauge 6 is provided with striped mark 6 formed of sections M1-M65, which are irradiated with light from lamp 11 and their images are formed on line sensor 5 through lens 12. Then, sensor 5 is driven by sensor driving circuit 14 to take a scan and the image is observed through synchroscope 16 being amplified by amplifier 15. Since photoelectric elements of sensor 5 correspond to respective sections of mark 6, odd-numbered and even-numbered photoelectric elements are nearly equal in output and have no node as far as the magnification is precise and when not, nodes are seen. When the magnification is further precise, an output where the lens is in the best focus increases, the point in the best focus can be observed.
JP54097020A 1979-07-30 1979-07-30 Optical reader magnification detection method Expired JPS5845068B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54097020A JPS5845068B2 (en) 1979-07-30 1979-07-30 Optical reader magnification detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54097020A JPS5845068B2 (en) 1979-07-30 1979-07-30 Optical reader magnification detection method

Publications (2)

Publication Number Publication Date
JPS5620386A true JPS5620386A (en) 1981-02-25
JPS5845068B2 JPS5845068B2 (en) 1983-10-06

Family

ID=14180698

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54097020A Expired JPS5845068B2 (en) 1979-07-30 1979-07-30 Optical reader magnification detection method

Country Status (1)

Country Link
JP (1) JPS5845068B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61266659A (en) * 1985-03-21 1986-11-26 ベニンガ−・アクチエンゲゼルシヤフト Method and apparatus for mercerizing fabric

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61266659A (en) * 1985-03-21 1986-11-26 ベニンガ−・アクチエンゲゼルシヤフト Method and apparatus for mercerizing fabric
JPH0223624B2 (en) * 1985-03-21 1990-05-24 Benninger Ag Maschf

Also Published As

Publication number Publication date
JPS5845068B2 (en) 1983-10-06

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