JPS57186108A - Sheet position detector of copying machine or the like - Google Patents

Sheet position detector of copying machine or the like

Info

Publication number
JPS57186108A
JPS57186108A JP7106181A JP7106181A JPS57186108A JP S57186108 A JPS57186108 A JP S57186108A JP 7106181 A JP7106181 A JP 7106181A JP 7106181 A JP7106181 A JP 7106181A JP S57186108 A JPS57186108 A JP S57186108A
Authority
JP
Japan
Prior art keywords
sheet
copying
correspond
detected
sided copying
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
JP7106181A
Other languages
Japanese (ja)
Inventor
Masaji Suda
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 JP7106181A priority Critical patent/JPS57186108A/en
Publication of JPS57186108A publication Critical patent/JPS57186108A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PURPOSE: To achieve accurate position detection without reference to an overall black area of a sheet by arranging position detecting means for detecting the passage position of the sheet on both sides of a conveyance path for the sheet, and then performing the detection by selecting one position detecting means on the image unrecorded side of the sheet.
CONSTITUTION: For the body-sided copying of a sheet reconveyed sheet after one-sided copying, it has a picture on its top surface, so the sheet is detected by sensor S1 and S3 which correspond to the reverse side. Fur mulciple copying, the sheet has a picture on the reverse side, so that sheet is detected by sensors S'1 and S'2 which correspond to the top surface. The selection is performed with switches which correspond to selection buttons for one-sided copying, both- sided copying, and multiple-copying and the sheet position is detected on the image unrecorded surface side of the sheet.
COPYRIGHT: (C)1982,JPO&Japio
JP7106181A 1981-05-12 1981-05-12 Sheet position detector of copying machine or the like Pending JPS57186108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7106181A JPS57186108A (en) 1981-05-12 1981-05-12 Sheet position detector of copying machine or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7106181A JPS57186108A (en) 1981-05-12 1981-05-12 Sheet position detector of copying machine or the like

Publications (1)

Publication Number Publication Date
JPS57186108A true JPS57186108A (en) 1982-11-16

Family

ID=13449625

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7106181A Pending JPS57186108A (en) 1981-05-12 1981-05-12 Sheet position detector of copying machine or the like

Country Status (1)

Country Link
JP (1) JPS57186108A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4777498A (en) * 1985-05-14 1988-10-11 Canon Kabushiki Kaisha Image forming apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4777498A (en) * 1985-05-14 1988-10-11 Canon Kabushiki Kaisha Image forming apparatus

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