JPS62169346U - - Google Patents
Info
- Publication number
- JPS62169346U JPS62169346U JP5661086U JP5661086U JPS62169346U JP S62169346 U JPS62169346 U JP S62169346U JP 5661086 U JP5661086 U JP 5661086U JP 5661086 U JP5661086 U JP 5661086U JP S62169346 U JPS62169346 U JP S62169346U
- Authority
- JP
- Japan
- Prior art keywords
- light source
- exposure
- signal
- exposure light
- predetermined
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
Landscapes
- Projection-Type Copiers In General (AREA)
- Control Of Exposure In Printing And Copying (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Description
第１図は本考案の複写機用フラツシユ露光制御
装置の一実施例を示す説明図。第２図は本考案の
一実施例の制御回路図。第３図イ，ロは本考案の
一実施例における操作を示す説明図。
符号の説明、１……原稿面ガラス、２……原稿
、３……フラツシユランプ、４……レンズ、５…
…ベルト状感光体、１０……制御回路、１０ａ，
１０ｂ……光量検知部、１１，１２……センサ、
１３，１４，１５，１６……差動増幅器、１７…
…ＯＲ回路、１８……スイツチ回路。
FIG. 1 is an explanatory diagram showing an embodiment of a flash exposure control device for a copying machine according to the present invention. FIG. 2 is a control circuit diagram of an embodiment of the present invention. FIGS. 3A and 3B are explanatory diagrams showing operations in an embodiment of the present invention. Explanation of symbols, 1... Original surface glass, 2... Original, 3... Flash lamp, 4... Lens, 5...
... Belt-shaped photoreceptor, 10 ... Control circuit, 10a,
10b...Light amount detection unit, 11, 12...Sensor,
13, 14, 15, 16...differential amplifier, 17...
...OR circuit, 18...switch circuit.
Claims (1)
写機において、 前記露光光源から直接受光する光量が予め定め
た第１の値に達したとき第１の光源オフ信号を出
力する第１の検出手段と、 前記露光光源に基いて原稿からの反射光を受光
する光量が予め定めた第２の値に達したとき第２
の光源オフ信号を出力する第２の検出手段と、 前記第１あるいは第２の光源オフ信号が出力さ
れたとき前記露光用光源をオフにする制御手段を
備えたことを特徴とする複写機用フラツシユ露光
制御装置。[Claims for Utility Model Registration] In a copying machine equipped with a flash lamp as an exposure light source, a first light source off signal is output when the amount of light directly received from the exposure light source reaches a predetermined first value. a first detecting means that detects when the amount of light received by the light reflected from the document based on the exposure light source reaches a predetermined second value;
a second detection means for outputting a light source off signal; and a control means for turning off the exposure light source when the first or second light source off signal is output. Flash exposure control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5661086U JPS62169346U (en) | 1986-04-15 | 1986-04-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5661086U JPS62169346U (en) | 1986-04-15 | 1986-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62169346U true JPS62169346U (en) | 1987-10-27 |
Family
ID=30885572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5661086U Pending JPS62169346U (en) | 1986-04-15 | 1986-04-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62169346U (en) |
-
1986
- 1986-04-15 JP JP5661086U patent/JPS62169346U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS62169346U (en) | ||
| JPH0392878U (en) | ||
| JPH01108561U (en) | ||
| JPS6258453U (en) | ||
| JPS56122069A (en) | Copying system using photodetector and light emitting element | |
| JPH01100131U (en) | ||
| JPS61203741U (en) | ||
| JPS6338148U (en) | ||
| JPH01139249U (en) | ||
| JPS62193363U (en) | ||
| JPH021755U (en) | ||
| JPH0244745U (en) | ||
| JPS6341148U (en) | ||
| JPS62193236U (en) | ||
| JPS61148070U (en) | ||
| JPH0446942U (en) | ||
| JPS63173647U (en) | ||
| JPS59172391U (en) | Translucent sheet detection device | |
| JPS61148078U (en) | ||
| KR910005111A (en) | Automatic Document Density Detection Device | |
| JPS5968342U (en) | Printing density control device for diazo copying machine | |
| JPS62193251U (en) | ||
| JPS6138642U (en) | Copy machine document illumination device | |
| JPH02119258U (en) | ||
| JPS62129557U (en) |