JPS59116942U - Copy machine exposure control device - Google Patents
Copy machine exposure control deviceInfo
- Publication number
- JPS59116942U JPS59116942U JP955183U JP955183U JPS59116942U JP S59116942 U JPS59116942 U JP S59116942U JP 955183 U JP955183 U JP 955183U JP 955183 U JP955183 U JP 955183U JP S59116942 U JPS59116942 U JP S59116942U
- Authority
- JP
- Japan
- Prior art keywords
- control device
- light
- exposure control
- slit
- copy machine
- 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
- Exposure Or Original Feeding In Electrophotography (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
- Control Of Exposure In Printing And Copying (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図は本考案の一実施例を示すもので、第１図は複写機の
概略構成を示す側面図、第２図はスリット板およびそれ
に対するフォトダイオードの取着状態を示す平面図、第
３図は露光制御装置の概略構成を示すブロック図、第４
図は第３図の各回路を具体的に示す構成図である。
１・・・原稿台、２・・・露光ランプ、７・・・感光体
ドラム（感光体）、２２・・・フォトダイオード（光検
出素子）、２４・・・スリット板、２５−・・スリット
、３１・・・交流電源、３２・・・サイリスタ、３５・
・・電圧生成回路、３６・・・加算スイッチ、３７・・
・誤差増幅器（比較器）、３８・・・光検出回路、３９
・・・基準電圧発生回路、４１・・・トリガパルス発生
回路。
１ −− −二
１Ｌ７１ヘリ−ｍ−へ１−ｍ−
１０’ｌ １００ １０４
“ ゴ
□The drawings show an embodiment of the present invention, in which Fig. 1 is a side view showing the schematic structure of a copying machine, Fig. 2 is a plan view showing the slit plate and the state in which the photodiode is attached to it, and Fig. 3 4 is a block diagram showing the schematic configuration of the exposure control device.
The figure is a configuration diagram specifically showing each circuit in FIG. 3. DESCRIPTION OF SYMBOLS 1... Original table, 2... Exposure lamp, 7... Photoreceptor drum (photoreceptor), 22... Photodiode (light detection element), 24... Slit plate, 25-... Slit , 31... AC power supply, 32... Thyristor, 35...
... Voltage generation circuit, 36... Addition switch, 37...
・Error amplifier (comparator), 38... Photodetection circuit, 39
...Reference voltage generation circuit, 41...Trigger pulse generation circuit. 1 - - -2 1L71 helicopter - m - 1 - m - 10'l 100 104 " Go □
Claims (1)
スリット板に形成されたスリットを介し゛ て感光体に
導びくことにより、画像露光するように構成された複写
機において、前記スリット板の光入射側でかつスリット
内に位置しない部位に取着され原稿からの光の一部を検
出して電気信号に変換する光検出素子と、この光検出素
子の出力信号に応じて前記露光ランプの光量を制御する
制御回路とを具備したことを特徴とする複写機の露光制
御装置。In a copying machine configured to expose an image by irradiating an original with an exposure lamp and guiding the light from the original to a photoreceptor through a slit formed in a slit plate, the light from the slit plate is A photodetecting element is attached to a part on the incident side that is not located within the slit and detects a part of the light from the document and converts it into an electrical signal, and the light intensity of the exposure lamp is determined according to the output signal of this photodetecting element. 1. An exposure control device for a copying machine, comprising: a control circuit for controlling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP955183U JPS59116942U (en) | 1983-01-26 | 1983-01-26 | Copy machine exposure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP955183U JPS59116942U (en) | 1983-01-26 | 1983-01-26 | Copy machine exposure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59116942U true JPS59116942U (en) | 1984-08-07 |
Family
ID=30141008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP955183U Pending JPS59116942U (en) | 1983-01-26 | 1983-01-26 | Copy machine exposure control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59116942U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63303338A (en) * | 1987-06-03 | 1988-12-09 | Katsuragawa Denki Kk | Exposure controller for copying machine |
-
1983
- 1983-01-26 JP JP955183U patent/JPS59116942U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63303338A (en) * | 1987-06-03 | 1988-12-09 | Katsuragawa Denki Kk | Exposure controller for copying machine |
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