JPH0224859U - - Google Patents
Info
- Publication number
- JPH0224859U JPH0224859U JP10297488U JP10297488U JPH0224859U JP H0224859 U JPH0224859 U JP H0224859U JP 10297488 U JP10297488 U JP 10297488U JP 10297488 U JP10297488 U JP 10297488U JP H0224859 U JPH0224859 U JP H0224859U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- command
- replenishment
- image forming
- forming apparatus
- 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 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図は本考案の画像形成装置におけるトナー
濃度制御装置の一例を示すブロツク図、第２図は
本考案の画像形成装置のトナー補給作動を示すフ
ローチヤート、第３図は乾式２成分現像を用いて
いる現像ユニツトを有する複写機の一例を示す概
要図である。
１……現像槽、２……現像ローラ、３……感光
体ベルト、４……トナー濃度センサー、６……ト
ナー補給ローラ、８……撹拌ローラ、１４……補
給モータ、１５……制御器。
Fig. 1 is a block diagram showing an example of a toner density control device in an image forming apparatus of the present invention, Fig. 2 is a flowchart showing toner replenishment operation of the image forming apparatus of the present invention, and Fig. 3 is a dry two-component developing system. 1 is a schematic diagram showing an example of a copying machine having a developing unit in use. DESCRIPTION OF SYMBOLS 1...Developer tank, 2...Developer roller, 3...Photoconductor belt, 4...Toner concentration sensor, 6...Toner supply roller, 8...Stirring roller, 14...Replenishment motor, 15...Controller .
Claims (1)
のトナー濃度をトナー濃度センサーにより検知し
、該トナー濃度検知センサーの検知信号に基づき
制御器からトナー補給モータへトナー補給動作の
ための指令を送るようにした構成を有する画像形
成装置において、上記制御器に、上記トナー補給
モータへのトナー補給動作指令が補給ＯＮ指令と
補給ＯＦＦ指令に間欠的に繰り返されるようにし
且つＯＮ時間よりＯＦＦ時間が長くなるような条
件を設定してなることを特徴とする画像形成装置
。 A toner concentration sensor detects the toner concentration in a developing unit using a dry two-component developer, and based on a detection signal from the toner concentration detection sensor, a controller sends a command for toner replenishment operation to a toner replenishment motor. In the image forming apparatus having the above configuration, the controller is configured to intermittently repeat a toner replenishment operation command to the toner replenishment motor as a replenishment ON command and a replenishment OFF command, and the OFF time is longer than the ON time. An image forming apparatus characterized by setting the following conditions.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10297488U JPH0224859U (en) | 1988-08-03 | 1988-08-03 | |
| US07/303,660 US4998461A (en) | 1988-03-08 | 1989-01-30 | Two-part plastic piston with excess resin receiving groove |
| GB8901973A GB2216629B (en) | 1988-03-08 | 1989-01-30 | Piston for a master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10297488U JPH0224859U (en) | 1988-08-03 | 1988-08-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0224859U true JPH0224859U (en) | 1990-02-19 |
Family
ID=31333372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10297488U Pending JPH0224859U (en) | 1988-03-08 | 1988-08-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0224859U (en) |
-
1988
- 1988-08-03 JP JP10297488U patent/JPH0224859U/ja active Pending
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