JPS56103570A - Picture reading device - Google Patents

Picture reading device

Info

Publication number
JPS56103570A
JPS56103570A JP542380A JP542380A JPS56103570A JP S56103570 A JPS56103570 A JP S56103570A JP 542380 A JP542380 A JP 542380A JP 542380 A JP542380 A JP 542380A JP S56103570 A JPS56103570 A JP S56103570A
Authority
JP
Japan
Prior art keywords
sensor
image
image sensor
plates
reflecting plates
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
JP542380A
Other languages
Japanese (ja)
Inventor
Kozo Arao
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 JP542380A priority Critical patent/JPS56103570A/en
Publication of JPS56103570A publication Critical patent/JPS56103570A/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
    • H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array

Abstract

PURPOSE:To ensure a highly efficient positioning of an image sensor, by inverting the image of the bright/dark identifying mark provided in a body with the image sensor against the optical axis to project the image onto the image sensor and detecting the variation of output according to the degree of deviation to the optical axis to give a minute shift to the identifying mark. CONSTITUTION:The reflecting plates 8a and 8b are provided right before the image sensor 4 in such way that the edges of the reflecting plates become parallel to the array direction of the sensor's light receiving parts. These reflecting plates are irradiated by the lamps 9a and 9b, and the reflected light enters the image forming lens 3. The plates 8a and 8b become bright; while a dark part is formed at the slit-shaped region having a longer direction vertical to the paper surface and formed by the gap between the reflecting plates. Now if the sensor 4 is at the normal position in terms of the (v) direction, a coincidence of the image is obtained between the plates 8a and 8b. Thus the regular incident light volume does not exist at the light receiving part of the sensor 4, and only the bias component is delivered there. As a result, a highly efficient positioning is possible for the image sensor by fixing the sensor at the position where the output becomes minimum.
JP542380A 1980-01-21 1980-01-21 Picture reading device Pending JPS56103570A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP542380A JPS56103570A (en) 1980-01-21 1980-01-21 Picture reading device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP542380A JPS56103570A (en) 1980-01-21 1980-01-21 Picture reading device

Publications (1)

Publication Number Publication Date
JPS56103570A true JPS56103570A (en) 1981-08-18

Family

ID=11610750

Family Applications (1)

Application Number Title Priority Date Filing Date
JP542380A Pending JPS56103570A (en) 1980-01-21 1980-01-21 Picture reading device

Country Status (1)

Country Link
JP (1) JPS56103570A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2650461A1 (en) * 1989-07-25 1991-02-01 I2S Device and process for mounting, positioning and adjusting a camera with charge-transfer linear pick-up

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2650461A1 (en) * 1989-07-25 1991-02-01 I2S Device and process for mounting, positioning and adjusting a camera with charge-transfer linear pick-up

Similar Documents

Publication Publication Date Title
JPS57142612A (en) Alignment optical system of projection type exposure device
JPS56110961A (en) Exposure device of electrophotographic copier
JPS5689005A (en) Position detector
JPS56103570A (en) Picture reading device
JPS5789731A (en) Focusing screen
JPS56162763A (en) Copying optical system
JPS6456467A (en) Exposure correction device for laser beam printer
JPS57118105A (en) Detector
JPS5677865A (en) Optical reflection system
JPS57172732A (en) Relative position detecting device for mask substrate and wafer
JPS6425664A (en) Blackboard electronic copying machine
JPS5754931A (en) View finder for single-lens reflex camera
JPS56146161A (en) Copying apparatus capable of reading image
JPS54136888A (en) Surface defect detecting device
JPS55101930A (en) Camera provided with data recorder
JPS5749929A (en) Photometric device of camera
JPS5589709A (en) Distance measuring unit
JPS57161607A (en) Measuring device for object size
JPS57135576A (en) Image reader
JPS57111525A (en) Eye bottom camera
JPS57189106A (en) Focus detector
JPS56155932A (en) Picture forming device
JPS5679232A (en) Device for measuring inclination of lense surface in lense system
JPS57188064A (en) Optical device of copying machine
JPS56110962A (en) Exposure device of electrophotographic copier