JPS5625753A - Detector of original size - Google Patents

Detector of original size

Info

Publication number
JPS5625753A
JPS5625753A JP10111479A JP10111479A JPS5625753A JP S5625753 A JPS5625753 A JP S5625753A JP 10111479 A JP10111479 A JP 10111479A JP 10111479 A JP10111479 A JP 10111479A JP S5625753 A JPS5625753 A JP S5625753A
Authority
JP
Japan
Prior art keywords
electrodes
original
size
nonconducting
photodetectors
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
JP10111479A
Other languages
Japanese (ja)
Inventor
Yukio Sato
Akira Yasuoka
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 JP10111479A priority Critical patent/JPS5625753A/en
Publication of JPS5625753A publication Critical patent/JPS5625753A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable discrimination of presence or absence of an original and its size to be automated, by providing electrodes or photodetectors opposite to each other outside the copying region of an original platen glass.
CONSTITUTION: Electrodes X1, Y1, and X2, Y2 are provided each opposite to each other on nonimage region A of glass 2 of original platen 1 and on original pressing cover 3. A detection signal of an original size is obtained by detecting conduction or nonconduction of electrodes X, Y disposed thus. For example, when the original is absent, electrodes X1-Y1 and X2-Y2 become conducting, and when it is of A4 size, electrodes X1-Y1 become conducting but X2-Y2 nonconducting. When it is of A3 size, electrodes X1-Y1 and X2-Y2 become both nonconducting. In addition, photodetectors are used in place of electrodes X, Y, a size of a thick original can be detected.
COPYRIGHT: (C)1981,JPO&Japio
JP10111479A 1979-08-08 1979-08-08 Detector of original size Pending JPS5625753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10111479A JPS5625753A (en) 1979-08-08 1979-08-08 Detector of original size

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10111479A JPS5625753A (en) 1979-08-08 1979-08-08 Detector of original size

Publications (1)

Publication Number Publication Date
JPS5625753A true JPS5625753A (en) 1981-03-12

Family

ID=14292038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10111479A Pending JPS5625753A (en) 1979-08-08 1979-08-08 Detector of original size

Country Status (1)

Country Link
JP (1) JPS5625753A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169845A (en) * 1984-02-14 1985-09-03 Konishiroku Photo Ind Co Ltd Original size detector of copying machine
JPH01265270A (en) * 1988-04-15 1989-10-23 Sanyo Electric Co Ltd Automatic detecting method for original size
JPH0684627U (en) * 1993-05-18 1994-12-02 小糸工業株式会社 Lighting device mounting structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169845A (en) * 1984-02-14 1985-09-03 Konishiroku Photo Ind Co Ltd Original size detector of copying machine
JPH01265270A (en) * 1988-04-15 1989-10-23 Sanyo Electric Co Ltd Automatic detecting method for original size
JPH0684627U (en) * 1993-05-18 1994-12-02 小糸工業株式会社 Lighting device mounting structure

Similar Documents

Publication Publication Date Title
DE3067543D1 (en) Touch sensitive tablet using force detection
JPS5622424A (en) Original size detecting unit of copying machine
JPS54133143A (en) Scanning system control device in electrophotographic copier
JPS5374424A (en) Photoelectric detection device suited for detecting focal point
JPS5625753A (en) Detector of original size
JPS5327425A (en) Detection of copy paper size
JPS5639555A (en) Original discrimination method
GB1524376A (en) Detection system
JPS5660463A (en) Original size detector of copying machine
JPS545616A (en) Detector for intra-viewfield change
JPS5664363A (en) Original size detector of copying machine
JPS5678849A (en) Original size detector
JPS57154268A (en) Detector for remaining amount of developer
JPS54106224A (en) Copier
JPS5269630A (en) Detector of wrong travel of recording paper
JPS5650359A (en) Transfer paper separating device in transfer type copying machine
JPS56141657A (en) Discrimination information addition equipment
JPS6064939U (en) automatic document feeder
JPS5357824A (en) Camera provided with setting device of film sensitivity
JPS5670245A (en) Double feed detection system
JPS52106446A (en) Absent phase detector
JPS57186108A (en) Sheet position detector of copying machine or the like
JPS57198809A (en) System for improving signal to noise ratio
JPS55105730A (en) Deyboard encoder
JPS5383740A (en) Papper detector