JPS61114438U - - Google Patents
Info
- Publication number
- JPS61114438U JPS61114438U JP19670084U JP19670084U JPS61114438U JP S61114438 U JPS61114438 U JP S61114438U JP 19670084 U JP19670084 U JP 19670084U JP 19670084 U JP19670084 U JP 19670084U JP S61114438 U JPS61114438 U JP S61114438U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- zero
- reference target
- crossing signal
- target value
- 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
- 230000010354 integration Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Control Of Exposure In Printing And Copying (AREA)
- Facsimile Scanning Arrangements (AREA)
Description
第１図は本考案の一実施例をあらわす回路構成
図、第２図は第１図の回路構成における各信号状
態をあらわすタイムチヤート図、第３図は本考案
による露光ランプの入力電圧と光量の関係をあら
わすグラフ、第４図は第３図に対応する従来例の
グラフである。
１：交流電源、２：負荷、３：電圧積算回路、
４：ゼロクロス検出回路、５：比較器、７：セツ
トリセツト回路、８：ドライバー。
Figure 1 is a circuit configuration diagram showing an embodiment of the present invention, Figure 2 is a time chart showing each signal state in the circuit configuration of Figure 1, and Figure 3 is the input voltage and light intensity of the exposure lamp according to the present invention. FIG. 4 is a graph of a conventional example corresponding to FIG. 3. 1: AC power supply, 2: load, 3: voltage integration circuit,
4: Zero cross detection circuit, 5: Comparator, 7: Set-reset circuit, 8: Driver.
Claims (1)
る交流電源と、交流電源のゼロクロス信号を検出
する手段と、ゼロクロス信号検出時から交流電源
の負荷に供給される電力または実効電圧を積算す
る積算回路と、この積算値を基準目標値と比較し
て該積算値が基準目標値に達したとき前記交流電
源から露光ランプへの給電を停止する比較制御回
路とを設けたことを特徴とする複写機の露光制御
装置。 An AC power supply that turns on and off the AC current supplied to the exposure lamp, a means for detecting a zero-crossing signal of the AC power supply, an integration circuit that integrates the power or effective voltage supplied to the load of the AC power supply from the time the zero-crossing signal is detected; Exposure control for a copying machine, comprising a comparison control circuit that compares an integrated value with a reference target value and stops power supply from the AC power supply to the exposure lamp when the integrated value reaches the reference target value. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19670084U JPS61114438U (en) | 1984-12-28 | 1984-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19670084U JPS61114438U (en) | 1984-12-28 | 1984-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61114438U true JPS61114438U (en) | 1986-07-19 |
Family
ID=30754545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19670084U Pending JPS61114438U (en) | 1984-12-28 | 1984-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61114438U (en) |
-
1984
- 1984-12-28 JP JP19670084U patent/JPS61114438U/ja active Pending