JPH01105938U - - Google Patents
Info
- Publication number
- JPH01105938U JPH01105938U JP55888U JP55888U JPH01105938U JP H01105938 U JPH01105938 U JP H01105938U JP 55888 U JP55888 U JP 55888U JP 55888 U JP55888 U JP 55888U JP H01105938 U JPH01105938 U JP H01105938U
- Authority
- JP
- Japan
- Prior art keywords
- light amount
- lamp
- monitor lamp
- light
- light intensity
- 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 4
- 238000010586 diagram Methods 0.000 description 13
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Control Of Exposure In Printing And Copying (AREA)
Description
第１図〜第４図は、本考案の一実施例における
光源制御装置について示したものであり、このう
ち第１図は本考案の一実施例における光源制御装
置の回路構成を示したブロツク図、第２図は、第
１図に示した露光用ランプとモニタ用ランプにそ
れぞれ接続された直列抵抗および並列抵抗とによ
つて構成された回路図、第３図は、並列抵抗を付
加した場合のモニタ用ランプの内部抵抗に発生す
る電力Ｗ３を起動時からの経過時間との関係を示
した電力特性図、第４図は、モニタ用ランプのそ
れぞれのランプ光量と起動時からの経過時間との
関係を示した光量特性図、第５図は、複写機の光
学系を簡単に示した概略構成図、第６図は、従来
の光源制御装置のうち特開昭６０―５１８４３に
開示された光源制御装置の回路構成を示したブロ
ツク図、第７図は、第６図で示したゼロクロス検
出回路によつてＡＣ電流波形からゼロクロス信号
の波形が作成される方法を説明するための説明図
、第８図は、第６図で示した従来の光源制御装置
によつて露光用ランプとモニタ用ランプのそれぞ
れの光量の立ち上がりを示した光量特性図、第９
図は、露光用ランプとモニタ用ランプとそれに直
列に接続された直列抵抗とによつて構成された回
路を示した回路図、第１０図は、露光用ランプの
内部抵抗に発生する電力Ｗ１とモニタ用ランプの
内部抵抗に発生する電力Ｗ２とを起動時からの経
過時間との関係を示した電力特性図、第１１図は
、特開昭５８―１９３５４８に開示された露光電
源装置の概略的な構成を示したブロツク図、第１
２図は、第１１図に示した露光電源装置のうち露
光用ランプおよびモニタ用ランプとその周辺回路
の構成を示した回路構成図、第１３図は、露光用
ランプおよびモニタ用ランプの要部の回路構成を
等価的に示した等価回路図。
１１……露光用ランプ、１９……モニタ用ラン
プ、２２……フオトダイオード、３１……モニタ
用ランプ光量増幅回路、３３……Ａ・Ｄ変換回路
、３６……ゼロクロス検出回路、３５……ＣＰＵ
、４１……トリガ回路、７１……並列抵抗。
1 to 4 show a light source control device according to an embodiment of the present invention, and FIG. 1 is a block diagram showing the circuit configuration of the light source control device according to an embodiment of the present invention. , Fig. 2 is a circuit diagram composed of a series resistor and a parallel resistor connected to the exposure lamp and monitor lamp shown in Fig. 1, respectively, and Fig. 3 is a circuit diagram when a parallel resistor is added. Figure 4 is a power characteristic diagram showing the relationship between the power W3 generated in the internal resistance of the monitor lamp and the elapsed time from startup. FIG. 5 is a schematic configuration diagram briefly showing the optical system of a copying machine, and FIG. 6 is a light intensity characteristic diagram showing the relationship between FIG. 7 is a block diagram showing the circuit configuration of the light source control device shown in FIG. , FIG. 8 is a light amount characteristic diagram showing the rise in the light amount of each of the exposure lamp and the monitor lamp using the conventional light source control device shown in FIG.
The figure is a circuit diagram showing a circuit composed of an exposure lamp, a monitor lamp, and a series resistor connected in series with the exposure lamp. FIG. 11 is a power characteristic diagram showing the relationship between the power W2 generated in the internal resistance of the monitor lamp and the elapsed time from startup. Block diagram showing the schematic configuration, 1st
Figure 2 is a circuit configuration diagram showing the configuration of the exposure lamp and monitor lamp and their peripheral circuits in the exposure power supply shown in Figure 11, and Figure 13 is the main parts of the exposure lamp and monitor lamp. An equivalent circuit diagram equivalently showing the circuit configuration of. 11...Exposure lamp, 19...Monitoring lamp, 22...Photodiode, 31...Monitoring lamp light amount amplification circuit, 33...A/D conversion circuit, 36...Zero cross detection circuit, 35...CPU
, 41...Trigger circuit, 71...Parallel resistance.
Claims (1)
タ用ランプと、 このモニタ用ランプの光量を検出する光量検出
手段と、 この光量検出手段によつて作成された光量検出
信号によつてモニタ用ランプの光量と予め設定さ
れた設定値とを比較する比較手段と、 前記モニタ用ランプの光量の立ち上がり時に、
前記比較手段によつて比較した結果、モニタ用ラ
ンプの光量が前記設定値を超えると、その光量を
その設定値に修正する光量制御手段と、 この光量制御手段によつて修正される前記光量
に応じて光量制御信号を作成する光量制御信号作
成手段と、 前記モニタ用ランプに対して並列に接続され、
前記光量制御信号によつて生じる光量制御電流の
大部分を流すことによつてモニタ用ランプの光量
の立ち上がり時にそれに所望の電圧を印加する並
列抵抗 とを具備することを特徴とする複写機の光源制
御装置。[Scope of Claim for Utility Model Registration] An exposure lamp of a copying machine, a monitor lamp that monitors changes in the light amount of this exposure lamp, a light amount detection means that detects the light amount of this monitor lamp, and this light amount detection means a comparison means for comparing the light intensity of the monitor lamp with a preset value using a light intensity detection signal generated by the monitor lamp;
light amount control means for correcting the light amount to the set value when the light amount of the monitor lamp exceeds the set value as a result of comparison by the comparison means; a light amount control signal generating means for creating a light amount control signal in response to the monitor lamp;
A light source for a copying machine, comprising: a parallel resistor that applies a desired voltage to the monitor lamp when the light intensity rises by flowing most of the light intensity control current generated by the light intensity control signal. Control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55888U JPH01105938U (en) | 1988-01-08 | 1988-01-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55888U JPH01105938U (en) | 1988-01-08 | 1988-01-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01105938U true JPH01105938U (en) | 1989-07-17 |
Family
ID=31199696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55888U Pending JPH01105938U (en) | 1988-01-08 | 1988-01-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01105938U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4110595B2 (en) * | 1997-10-21 | 2008-07-02 | ソニー株式会社 | Manufacturing method of semiconductor light emitting device |
-
1988
- 1988-01-08 JP JP55888U patent/JPH01105938U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4110595B2 (en) * | 1997-10-21 | 2008-07-02 | ソニー株式会社 | Manufacturing method of semiconductor light emitting device |
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