JPS61167667U - - Google Patents
Info
- Publication number
- JPS61167667U JPS61167667U JP5082585U JP5082585U JPS61167667U JP S61167667 U JPS61167667 U JP S61167667U JP 5082585 U JP5082585 U JP 5082585U JP 5082585 U JP5082585 U JP 5082585U JP S61167667 U JPS61167667 U JP S61167667U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- circuit
- motor
- motor control
- comparator
- 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
- 230000006866 deterioration Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000007704 transition Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図は本考案の自動トナー濃度制御装置の一
実施例を示す電気ブロツク図、第２図は湿度変化
に対する現像剤中のトナー濃度の変化特性を示す
図、第３図は現像剤の経時変化による現像剤中の
トナー濃度の変化特性を示す図、第４図は従来の
自動トナー濃度制御装置の概略構成を示す電気ブ
ロツク図、第５図は従来の自動トナー濃度制御装
置における通常の湿度環境下における検出電圧の
推移を示す図、第６図は同、高湿環境下における
検出電圧の推移を示す図、第７図は本考案の自動
トナー濃度制御装置におけるトナー補給用モータ
のローデユーテイサイクル時のタイムチヤート、
第８図は同、ハイデユーテイサイクル時のタイム
チヤートである。
図中、１……ケーシング、２……透磁率検知セ
ンサー、３……検出回路、４……比較器、５……
基準電圧発生回路、６……湿度センサー、７……
湿度補償回路、８……劣化補償回路、９……トナ
ー補給用モータ、１０……モータ制御回路、１１
……タイマー回路。
Figure 1 is an electrical block diagram showing an embodiment of the automatic toner density control device of the present invention, Figure 2 is a diagram showing the change characteristics of the toner concentration in the developer with respect to changes in humidity, and Figure 3 is a diagram showing the change characteristics of the toner concentration in the developer over time. Fig. 4 is an electrical block diagram showing the schematic configuration of a conventional automatic toner density control device; Fig. 5 shows normal humidity in a conventional automatic toner density control device. FIG. 6 is a diagram showing the transition of detected voltage in a high humidity environment. FIG. 7 is a diagram showing the transition of the detected voltage in a high humidity environment. Time chart during take cycle,
FIG. 8 is a time chart during the high duty cycle. In the figure, 1...Casing, 2...Magnetic permeability detection sensor, 3...Detection circuit, 4...Comparator, 5...
Reference voltage generation circuit, 6... Humidity sensor, 7...
Humidity compensation circuit, 8... Deterioration compensation circuit, 9... Toner replenishment motor, 10... Motor control circuit, 11
...Timer circuit.
Claims (1)
知センサーを接続した検出回路と、湿度センサー
に接続した湿度補償回路及びコピー信号で作動す
るトナーの劣化補償回路等を夫々接続した基準電
圧発生回路とを比較器に接続し、該比較器からモ
ータ制御回路を介して前記現像機のケーシング内
へトナーを補給するためのトナー補給用モータに
電気出力がなされるように構成した自動トナー濃
度制御装置において、前記モータ制御回路に機械
本体のパワーオン信号によつて作動するタイマー
回路を接続し、前記機械本体にパワーがオンされ
ると、該タイマー回路によつてあらかじめ設定し
ておいた時間、前記トナー補給用モータを、モー
タ制御回路を介して二段階以上に自動的に切り替
えてトナーの補給を行うようにしたことを特徴と
する電子写真複写機等の自動トナー濃度制御装置
。 Comparison of a detection circuit connected to a toner concentration detection sensor placed inside the developing machine casing, and a reference voltage generation circuit connected to a humidity compensation circuit connected to a humidity sensor, a toner deterioration compensation circuit activated by a copy signal, etc. In the automatic toner concentration control device, the comparator is connected to a toner replenishment motor, and the comparator is configured to provide an electrical output to a toner replenishment motor for replenishing toner into a casing of the developing device via a motor control circuit. A timer circuit activated by a power-on signal from the machine main body is connected to the motor control circuit, and when the power is turned on to the machine main body, the timer circuit operates for a preset time to supply the toner. An automatic toner concentration control device for an electrophotographic copying machine, etc., characterized in that a motor is automatically switched between two or more stages via a motor control circuit to replenish toner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5082585U JPS61167667U (en) | 1985-04-05 | 1985-04-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5082585U JPS61167667U (en) | 1985-04-05 | 1985-04-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61167667U true JPS61167667U (en) | 1986-10-17 |
Family
ID=30569320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5082585U Pending JPS61167667U (en) | 1985-04-05 | 1985-04-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61167667U (en) |
-
1985
- 1985-04-05 JP JP5082585U patent/JPS61167667U/ja active Pending
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