JPS5762136A - Display device of residual quantity of paper - Google Patents

Display device of residual quantity of paper

Info

Publication number
JPS5762136A
JPS5762136A JP55137953A JP13795380A JPS5762136A JP S5762136 A JPS5762136 A JP S5762136A JP 55137953 A JP55137953 A JP 55137953A JP 13795380 A JP13795380 A JP 13795380A JP S5762136 A JPS5762136 A JP S5762136A
Authority
JP
Japan
Prior art keywords
paper
end surface
residual quantity
light guide
placing plate
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
JP55137953A
Other languages
Japanese (ja)
Inventor
Katsuyoshi Maejima
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 JP55137953A priority Critical patent/JPS5762136A/en
Publication of JPS5762136A publication Critical patent/JPS5762136A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To early give notice of preparations for paper supply by adopting optical fibr in an optical transmission path for connecting thickness of paper end surface with a display device in order to indiucate thickness of paper residual quantity in a copier, whereby the paper residual quantity is indicated in a simple construction.
CONSTITUTION: At the time of copying, a light source 10 is lighted and light is directed under a paper placing plate 4 through a hole 7 of a bottom plate of a paper feeding cassette 1. The light passes through holes 1a, 17a, 18a, 16 and incides the end surface of a light guide 2 formed of optical fiber, which is opposed to a paper thickness portion above the paper placing plate 4, not the light guide end surface opposed to a paper thickness portion above the paper placing plate. Accordingly, a black portion of the light guide end surface opposed to an indicating device 9 shows the paper residual quantity. It never happens that an operator starts copying operation without noticing lack of paper and is confused when paper is out in the middle of copying operation.
COPYRIGHT: (C)1982,JPO&Japio
JP55137953A 1980-10-02 1980-10-02 Display device of residual quantity of paper Pending JPS5762136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55137953A JPS5762136A (en) 1980-10-02 1980-10-02 Display device of residual quantity of paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55137953A JPS5762136A (en) 1980-10-02 1980-10-02 Display device of residual quantity of paper

Publications (1)

Publication Number Publication Date
JPS5762136A true JPS5762136A (en) 1982-04-15

Family

ID=15210568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55137953A Pending JPS5762136A (en) 1980-10-02 1980-10-02 Display device of residual quantity of paper

Country Status (1)

Country Link
JP (1) JPS5762136A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59187651U (en) * 1983-05-27 1984-12-12 コニカ株式会社 Paper remaining amount display device
JPS629551U (en) * 1985-06-29 1987-01-21
JPS629552U (en) * 1985-06-29 1987-01-21

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59187651U (en) * 1983-05-27 1984-12-12 コニカ株式会社 Paper remaining amount display device
JPS629551U (en) * 1985-06-29 1987-01-21
JPS629552U (en) * 1985-06-29 1987-01-21

Similar Documents

Publication Publication Date Title
GB2033842B (en) Copying apparatus provided with an automatic original feeding device
JPS5319091A (en) Detection of liquid concentration and apparatus therefor
FR2507337B1 (en) AUTOMATIC DENSITY AND CONTRAST ADJUSTMENT DEVICE AS WELL AS EXPOSURE FOR PHOTOGRAPHIC PRINTER
IT1258814B (en) AUTOMATIC OPERATING PHOTO REPRODUCTION EQUIPMENT WITH A MASKING DEVICE
JPS5762136A (en) Display device of residual quantity of paper
JPS57201227A (en) Color compensating device of light source for color printer
JPS5588086A (en) Transfer device
GB2070229B (en) Gasifying device for liquid fuel burner
JPS561955A (en) Copying machine capable of registering
JPS5517179A (en) Developing device
JPS53114310A (en) Paper leaf detector
JPS6457282A (en) Image forming device
JPS56159637A (en) Method and device for detecting original transparency of copying machine
JPS57210336A (en) Original feeding and copying machine
JPS57199931A (en) Detecting apparatus of disconnected part for optical fiber
JPS5392621A (en) Color solid image pickup unit
JPS57128357A (en) Copying machine
JPS57197530A (en) Recorder
JPS5829465Y2 (en) Fluidity change display device
JPS574074A (en) Variable magnification device of copying machine
JPS57109959A (en) Paper feeder of copying machine
JPS5710438A (en) Optical image observing unit of optical image device
JPS52116245A (en) Electronic recording means
JPS57103884A (en) Printer device
JPS5639568A (en) Concentration detector of developing apparatus