JPS54156658A - Reflection type object detector - Google Patents

Reflection type object detector

Info

Publication number
JPS54156658A
JPS54156658A JP6592778A JP6592778A JPS54156658A JP S54156658 A JPS54156658 A JP S54156658A JP 6592778 A JP6592778 A JP 6592778A JP 6592778 A JP6592778 A JP 6592778A JP S54156658 A JPS54156658 A JP S54156658A
Authority
JP
Japan
Prior art keywords
original
light
light emitting
platen glass
reflection type
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
JP6592778A
Other languages
Japanese (ja)
Inventor
Masahiro Tomosada
Yoshimasa Kimura
Hisashi Sakamaki
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 JP6592778A priority Critical patent/JPS54156658A/en
Priority to US06/042,235 priority patent/US4264188A/en
Priority to GB7919005A priority patent/GB2026180B/en
Priority to DE19792922204 priority patent/DE2922204A1/en
Priority to GB8128657A priority patent/GB2083008B/en
Priority to DE2954567A priority patent/DE2954567C2/en
Publication of JPS54156658A publication Critical patent/JPS54156658A/en
Priority to US06/242,721 priority patent/US4372673A/en
Priority to GB08227946A priority patent/GB2106874B/en
Priority to HK421/88A priority patent/HK42188A/en
Pending legal-status Critical Current

Links

Landscapes

  • Geophysics And Detection Of Objects (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Control Of Position Or Direction (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

PURPOSE: To improve the accuracy of detection by providing a plurality of reflecting positions.
CONSTITUTION: Two light emitting diodes LD 2, LD 3 are disposed to a reflection type object detector 45' disposed on an original platen glass 14, in proximity to a photo transistor PT' as a photo detector, at the same angle to the original platen glass 14 and at varying heights. Then, at the time when the original 47 being fed to the inside of the space 44 on the originla platen glass 14 passes the low position in the space 44, the light of the light emitting diode LD 2 is radiated and when it passes the high position, the light of the light emitting diode LD 3 is radiated and the reflected light thereof is surely detected in the photo transistor PT'. Hence, the original 47 is effectively detected even when it is conveyed while waving.
COPYRIGHT: (C)1979,JPO&Japio
JP6592778A 1978-05-31 1978-05-31 Reflection type object detector Pending JPS54156658A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP6592778A JPS54156658A (en) 1978-05-31 1978-05-31 Reflection type object detector
US06/042,235 US4264188A (en) 1978-05-31 1979-05-24 Control for multiple-mode copying apparatus
GB7919005A GB2026180B (en) 1978-05-31 1979-05-31 Line-by-line photocopier
DE19792922204 DE2922204A1 (en) 1978-05-31 1979-05-31 COPY DEVICE
GB8128657A GB2083008B (en) 1978-05-31 1979-05-31 Line-by-line photocopying
DE2954567A DE2954567C2 (en) 1978-05-31 1979-05-31 Copier (copying device) with a master-conveying device (original-conveying device)
US06/242,721 US4372673A (en) 1978-05-31 1981-03-12 Image forming apparatus
GB08227946A GB2106874B (en) 1978-05-31 1982-09-30 Copying apparatus
HK421/88A HK42188A (en) 1978-05-31 1988-06-09 Copying apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6592778A JPS54156658A (en) 1978-05-31 1978-05-31 Reflection type object detector

Publications (1)

Publication Number Publication Date
JPS54156658A true JPS54156658A (en) 1979-12-10

Family

ID=13301081

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6592778A Pending JPS54156658A (en) 1978-05-31 1978-05-31 Reflection type object detector

Country Status (1)

Country Link
JP (1) JPS54156658A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014211777A (en) * 2013-04-19 2014-11-13 クロイ電機株式会社 Non-contact card reader

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS424262Y1 (en) * 1964-12-21 1967-03-09
JPS52145249A (en) * 1976-05-29 1977-12-03 Toshiba Corp Object detecting apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS424262Y1 (en) * 1964-12-21 1967-03-09
JPS52145249A (en) * 1976-05-29 1977-12-03 Toshiba Corp Object detecting apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014211777A (en) * 2013-04-19 2014-11-13 クロイ電機株式会社 Non-contact card reader

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