JPS5616147A - Sheet existence detecting unit of copying - Google Patents
Sheet existence detecting unit of copyingInfo
- Publication number
- JPS5616147A JPS5616147A JP7755880A JP7755880A JPS5616147A JP S5616147 A JPS5616147 A JP S5616147A JP 7755880 A JP7755880 A JP 7755880A JP 7755880 A JP7755880 A JP 7755880A JP S5616147 A JPS5616147 A JP S5616147A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- source lamp
- constitution
- copying
- detecting unit
- 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
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
Abstract
PURPOSE: To reduce the number of parts to simplify constitution and simplify wiring of lead wires, by detecting by one light source and the first and the second photodetectors whether a copy sheet to exist in the upper side and a copy sheet to exist in the lower side are present or absent.
CONSTITUTION: One light source lamp 71 is arranged between paper supply cassettes 5 and 6, and the light path toward the first photodetector 72 and the second photodetector 73 is formed from light source lamp 71. Light source lamp 71 and photodetectors 72 and 73 detect that copy sheets in cassettes 5 and 6 have run out and achieve the function to display paper absence on the operation part of the copying unit. Thus, the number of parts is reduced because only one light source lamp is required, and constitution and wiring of lead wires are simplified. Consequently, the unit can be low-cost.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7755880A JPS5616147A (en) | 1980-06-09 | 1980-06-09 | Sheet existence detecting unit of copying |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7755880A JPS5616147A (en) | 1980-06-09 | 1980-06-09 | Sheet existence detecting unit of copying |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2800979A Division JPS55120065A (en) | 1979-03-09 | 1979-03-09 | Electrophotographic copier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5616147A true JPS5616147A (en) | 1981-02-16 |
Family
ID=13637337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7755880A Pending JPS5616147A (en) | 1980-06-09 | 1980-06-09 | Sheet existence detecting unit of copying |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5616147A (en) |
-
1980
- 1980-06-09 JP JP7755880A patent/JPS5616147A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5526156A (en) | Sheet condition detecting method | |
JPS5616147A (en) | Sheet existence detecting unit of copying | |
JPS5443074A (en) | Detector of paper leaves | |
JPS53148442A (en) | Paper size detector | |
JPS56161244A (en) | Multiple feed detecting device | |
JPS53116792A (en) | Semiconductor light emitting-photo detecting composite device | |
JPS5710172A (en) | Original size detecting method of copying machine | |
JPS5574262A (en) | Optoelectric conversion unit | |
JPS56167487A (en) | Printer | |
JPS556359A (en) | Original size display device of copying machine | |
JPS5528079A (en) | Automatic variable magnification copier | |
JPS57210355A (en) | Image recording device | |
JPS5467338A (en) | Eye for detection of direction of line and graph | |
JPS57182727A (en) | Original size detecting device for copying machine or the like | |
JPS57197530A (en) | Recorder | |
TW327673B (en) | Illumination control apparatus | |
JPS57173842A (en) | Automatic inserter | |
JPS57124377A (en) | Detecting method for overlapped transfer paper delivery | |
JPS54144044A (en) | Washing water turbidity detector for electric washing machine | |
JPS55149961A (en) | Copying machine | |
JPS5333144A (en) | Copier | |
JPS56114974A (en) | Controller of copying machine | |
JPS545323A (en) | Compensating unit for light source output variation | |
JPS57144571A (en) | Double feed detector | |
JPS5483276A (en) | Sheet feeder |