JPH032342U - - Google Patents
Info
- Publication number
- JPH032342U JPH032342U JP13338088U JP13338088U JPH032342U JP H032342 U JPH032342 U JP H032342U JP 13338088 U JP13338088 U JP 13338088U JP 13338088 U JP13338088 U JP 13338088U JP H032342 U JPH032342 U JP H032342U
- Authority
- JP
- Japan
- Prior art keywords
- zero
- crossing point
- light source
- correction means
- copying 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
Description
第１図は本考案の原理的構成を示すブロツク図
、第２図〜第４図は本考案の第１の実施例を説明
するためのもので、このうち第２図は複写機の光
源制御装置の回路図、第３図は装置各部の波形変
化を示す波形図、第４図はマイクロコンピユータ
の割込処理を説明するための流れ図、第５図〜第
７図は本考案の第２の実施例を説明するためのも
ので、このうち第５図は複写機の光源制御装置の
回路図、第６図は装置各部の波形変化を示す波形
図、第７図はマイクロコンピユータの割込処理を
説明するための流れ図、第８図は従来提案された
複写機の光源制御装置の概要を示したブロツク図
である。
２１……ゼロクロス点検出手段、２２……ゼロ
クロス点補正手段、２３……位相制御手段、３２
……ゼロクロス点検出回路、３８……１６ビツト
タイマ、４１……キヤプチヤレジスタ、４２，６
４……マイクロコンピユータ、４５……マグニチ
ユードコンパレータ、５１……３端子交流スイツ
チ、６６……タイマ起動禁止信号発生回路、６７
……オア回路、６９……タイマ、７７……トリガ
回路。
Fig. 1 is a block diagram showing the basic configuration of the present invention, and Figs. 2 to 4 are for explaining the first embodiment of the invention. The circuit diagram of the device, FIG. 3 is a waveform diagram showing waveform changes in each part of the device, FIG. 4 is a flowchart to explain the interrupt processing of the microcomputer, and FIGS. 5 to 7 are the second part of the present invention. Figure 5 is a circuit diagram of a light source control device of a copying machine, Figure 6 is a waveform diagram showing waveform changes in each part of the device, and Figure 7 is an interrupt processing of a microcomputer. FIG. 8 is a block diagram showing an outline of a conventionally proposed light source control device for a copying machine. 21... Zero cross point detection means, 22... Zero cross point correction means, 23... Phase control means, 32
... Zero cross point detection circuit, 38 ... 16-bit timer, 41 ... Capture register, 42,6
4... Microcomputer, 45... Magnitude comparator, 51... 3-terminal AC switch, 66... Timer start inhibition signal generation circuit, 67
...OR circuit, 69...timer, 77...trigger circuit.
Claims (1)
ス点検出手段と、 電源ラインに重畳するノイズによつて前記ゼロ
クロス点検出手段がゼロクロス点を検出したとき
この検出点をゼロクロス点から除外するゼロクロ
ス点補正手段と、 このゼロクロス点補正手段によつて補正された
各ゼロクロス点を起点として光源の点灯タイミン
グを制御する位相制御手段 とを具備することを特徴とする複写機の光源制
御装置。[Claims for Utility Model Registration] Zero-crossing point detection means for detecting a zero-crossing point of a power supply line; A light source control device for a copying machine, comprising: a zero-crossing point correction means for excluding; and a phase control means for controlling the lighting timing of a light source using each zero-crossing point corrected by the zero-crossing point correction means as a starting point. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13338088U JPH032342U (en) | 1988-10-14 | 1988-10-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13338088U JPH032342U (en) | 1988-10-14 | 1988-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH032342U true JPH032342U (en) | 1991-01-10 |
Family
ID=31680787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13338088U Pending JPH032342U (en) | 1988-10-14 | 1988-10-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH032342U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012081350A1 (en) * | 2010-12-14 | 2012-06-21 | 株式会社エルム | Highly stable dimming device |
| WO2013187166A1 (en) * | 2012-06-11 | 2013-12-19 | 株式会社エルム | High-stability dimming device |
-
1988
- 1988-10-14 JP JP13338088U patent/JPH032342U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012081350A1 (en) * | 2010-12-14 | 2012-06-21 | 株式会社エルム | Highly stable dimming device |
| JP5070587B2 (en) * | 2010-12-14 | 2012-11-14 | 株式会社エルム | Highly stable dimmer |
| WO2013187166A1 (en) * | 2012-06-11 | 2013-12-19 | 株式会社エルム | High-stability dimming device |
| JP5458457B1 (en) * | 2012-06-11 | 2014-04-02 | 株式会社エルム | Highly stable dimmer |
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