JPS55137539A - Original size detecting system of copying machine - Google Patents

Original size detecting system of copying machine

Info

Publication number
JPS55137539A
JPS55137539A JP4496079A JP4496079A JPS55137539A JP S55137539 A JPS55137539 A JP S55137539A JP 4496079 A JP4496079 A JP 4496079A JP 4496079 A JP4496079 A JP 4496079A JP S55137539 A JPS55137539 A JP S55137539A
Authority
JP
Japan
Prior art keywords
original
light emitting
photo
photo detector
positions
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
JP4496079A
Other languages
Japanese (ja)
Inventor
Masaaki Mori
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 JP4496079A priority Critical patent/JPS55137539A/en
Publication of JPS55137539A publication Critical patent/JPS55137539A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable copying paper to be automatically selected according to original sizes by disposing the photo sensors consisting of light emitting elements and photo detectors respectively in the positions which do not overlap with any size of original placement.
CONSTITUTION: A light emitting element 10 as a light source is mounted to the holding member 11 secured to the copying machine body 1 to the position opposing to a photo detector 8 with an original platen 2 in-between and a photo sensor is constituted by this photo detector 8 and light emitting element 10. When the original S does not interpose between the photo detector 8 and light emitting element 10 on the original platen 2, an electrical output is obtainable from the photo detector 8 but when the original S interposes there, no electrical output is obtainable. The sensors are disposed in the positions AWD respectively where they do not overlap with any size of original placement positions smaller than four kinds of A3, A4, B4, B5 within the original placement positions of each size when said sizes are selected for the original sizes.
COPYRIGHT: (C)1980,JPO&Japio
JP4496079A 1979-04-13 1979-04-13 Original size detecting system of copying machine Pending JPS55137539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4496079A JPS55137539A (en) 1979-04-13 1979-04-13 Original size detecting system of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4496079A JPS55137539A (en) 1979-04-13 1979-04-13 Original size detecting system of copying machine

Publications (1)

Publication Number Publication Date
JPS55137539A true JPS55137539A (en) 1980-10-27

Family

ID=12706040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4496079A Pending JPS55137539A (en) 1979-04-13 1979-04-13 Original size detecting system of copying machine

Country Status (1)

Country Link
JP (1) JPS55137539A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59159152A (en) * 1983-02-28 1984-09-08 Fuji Xerox Co Ltd Original size detector of copying machine
JPS6133041U (en) * 1984-07-28 1986-02-28 京セラミタ株式会社 Document length detection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59159152A (en) * 1983-02-28 1984-09-08 Fuji Xerox Co Ltd Original size detector of copying machine
JPS6133041U (en) * 1984-07-28 1986-02-28 京セラミタ株式会社 Document length detection device
JPH0422347Y2 (en) * 1984-07-28 1992-05-21

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