JPS551753A - Shading correction unit - Google Patents

Shading correction unit

Info

Publication number
JPS551753A
JPS551753A JP7458878A JP7458878A JPS551753A JP S551753 A JPS551753 A JP S551753A JP 7458878 A JP7458878 A JP 7458878A JP 7458878 A JP7458878 A JP 7458878A JP S551753 A JPS551753 A JP S551753A
Authority
JP
Japan
Prior art keywords
output
solidstate
reflection section
photo
fed
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
JP7458878A
Other languages
Japanese (ja)
Other versions
JPS6151820B2 (en
Inventor
Toshiyuki Iguchi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP7458878A priority Critical patent/JPS551753A/en
Publication of JPS551753A publication Critical patent/JPS551753A/en
Publication of JPS6151820B2 publication Critical patent/JPS6151820B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Facsimile Scanning Arrangements (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Image Input (AREA)

Abstract

PURPOSE: To achieve suitable correction momentarily and automatically, by providing the white color diffusion reflection section in parallel line close to the line subject to main scanning of the solidstate scanner illumination system and operating and processing the output of the scanning element and conversion element through the detection of the photo information from the reflection section with the photo electric conversion element.
CONSTITUTION: The unit provides the contact lens 1 constituting the scanner illumination system of the solidstate scanning element 5 and the white color diffusion reflection section 10 in parallel line close to the line subject to main scanning of the slit 2. The photo information on the main scanning line is read in with the solidstate scanning element 5 via the image forming lens 3 and the photo information from the diffusion reflection section 10 is detected with the photo electric conversion elements 61 to 6n. Further, based on the control by the drive count circuit 71, the output signal of the solidstate scanning element 5 is fed to the signal output processing circuit 73, the output of the photo electric conversion elements 61 to 6n is fed to the output signal processing circuit 75 via the amplifying circuit 74 to perform signal processing respectively, and the output of the both processing circuits 73, 75 is fed to the synthesis signal processing circuit 76 to perform operational processing.
COPYRIGHT: (C)1980,JPO&Japio
JP7458878A 1978-06-20 1978-06-20 Shading correction unit Granted JPS551753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7458878A JPS551753A (en) 1978-06-20 1978-06-20 Shading correction unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7458878A JPS551753A (en) 1978-06-20 1978-06-20 Shading correction unit

Publications (2)

Publication Number Publication Date
JPS551753A true JPS551753A (en) 1980-01-08
JPS6151820B2 JPS6151820B2 (en) 1986-11-11

Family

ID=13551462

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7458878A Granted JPS551753A (en) 1978-06-20 1978-06-20 Shading correction unit

Country Status (1)

Country Link
JP (1) JPS551753A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55108080A (en) * 1979-02-14 1980-08-19 Hitachi Ltd Photo electric conversion unit
JPS572159A (en) * 1980-06-05 1982-01-07 Canon Inc Reading device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55108080A (en) * 1979-02-14 1980-08-19 Hitachi Ltd Photo electric conversion unit
JPS572159A (en) * 1980-06-05 1982-01-07 Canon Inc Reading device

Also Published As

Publication number Publication date
JPS6151820B2 (en) 1986-11-11

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