JPS54115136A - Electrophotographic apparatus - Google Patents

Electrophotographic apparatus

Info

Publication number
JPS54115136A
JPS54115136A JP2146878A JP2146878A JPS54115136A JP S54115136 A JPS54115136 A JP S54115136A JP 2146878 A JP2146878 A JP 2146878A JP 2146878 A JP2146878 A JP 2146878A JP S54115136 A JPS54115136 A JP S54115136A
Authority
JP
Japan
Prior art keywords
sheet
conveying direction
light
image supporting
slit
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
JP2146878A
Other languages
Japanese (ja)
Other versions
JPS6363449B2 (en
Inventor
Motoichiro Inoue
Toyoji Ishikawa
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 JP2146878A priority Critical patent/JPS54115136A/en
Publication of JPS54115136A publication Critical patent/JPS54115136A/en
Publication of JPS6363449B2 publication Critical patent/JPS6363449B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Controlling Sheets Or Webs (AREA)
  • Paper Feeding For Electrophotography (AREA)

Abstract

PURPOSE: To detect the conveying direction of an image supporting sheet by detecting the quantity of light in the direction perpendicular to the conveying direction of the image supporting sheet with a multipoint detecting element.
CONSTITUTION: An image supporting sheet 19 being fixed and conveyed along a guide plate 17 is radiated by the light source light through the slit 20 provided at a right angle to the conveying direction of the sheet 10 to a guide plate 17 and the radiated light is cut off by the sheet 19, thus producing bright and dark parts at both side edge parts of the sheet 19 at the passing of the slit 20. The quantity of light corresponding to the brightness and darkness is then detected with a multipoint detecting element 23. When this detection signal is digitally processed and is subjected to comparison with a reference bit and other processings, the conveying direction of the sheet 19 is detected, thus the correction of the sheet conveying direction, the classification of defective sheets, etc. may be accomplished.
COPYRIGHT: (C)1979,JPO&Japio
JP2146878A 1978-02-28 1978-02-28 Electrophotographic apparatus Granted JPS54115136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2146878A JPS54115136A (en) 1978-02-28 1978-02-28 Electrophotographic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2146878A JPS54115136A (en) 1978-02-28 1978-02-28 Electrophotographic apparatus

Publications (2)

Publication Number Publication Date
JPS54115136A true JPS54115136A (en) 1979-09-07
JPS6363449B2 JPS6363449B2 (en) 1988-12-07

Family

ID=12055807

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2146878A Granted JPS54115136A (en) 1978-02-28 1978-02-28 Electrophotographic apparatus

Country Status (1)

Country Link
JP (1) JPS54115136A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6464945A (en) * 1987-09-07 1989-03-10 Olympus Optical Co Sheet position detecting device
JPH01256436A (en) * 1988-04-06 1989-10-12 Hitachi Ltd Cash automatic handling device
JPH01295867A (en) * 1988-05-24 1989-11-29 Fuji Xerox Co Ltd Apparatus for detecting oblique running

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5033051U (en) * 1973-07-18 1975-04-10
JPS51149726A (en) * 1975-06-17 1976-12-22 Fujitsu Ltd Method of checking oblique movement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5033051U (en) * 1973-07-18 1975-04-10
JPS51149726A (en) * 1975-06-17 1976-12-22 Fujitsu Ltd Method of checking oblique movement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6464945A (en) * 1987-09-07 1989-03-10 Olympus Optical Co Sheet position detecting device
JPH01256436A (en) * 1988-04-06 1989-10-12 Hitachi Ltd Cash automatic handling device
JPH01295867A (en) * 1988-05-24 1989-11-29 Fuji Xerox Co Ltd Apparatus for detecting oblique running

Also Published As

Publication number Publication date
JPS6363449B2 (en) 1988-12-07

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