JPS6434650U - - Google Patents
Info
- Publication number
- JPS6434650U JPS6434650U JP12947887U JP12947887U JPS6434650U JP S6434650 U JPS6434650 U JP S6434650U JP 12947887 U JP12947887 U JP 12947887U JP 12947887 U JP12947887 U JP 12947887U JP S6434650 U JPS6434650 U JP S6434650U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- supply passage
- developer supply
- developing
- shutter
- 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.)
- Granted
Links
- 238000003756 stirring Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims 1
- 108091008695 photoreceptors Proteins 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図ないし第３図は本考案の一実施例を示す
ものであつて、第１図は現像装置の全体構成を示
す縦断面図、第２図は現像装置の各動作部の動き
を示すフローチヤート、第３図はそのタイミング
チヤートである。
１は現像槽、２は現像用マグネツトローラ（現
像部）、３は感光体（記録媒体）、４は搬送用マ
グネツトローラ、５は予備撹拌ローラ、８はトナ
ー補給ローラ、９はトナー補給手段、１０はトナ
ー濃度検出センサ、１１はタイマー回路、１２は
撹拌ローラ、１３はシヤツター、Ｍ１，Ｍ２，Ｍ
３はモータである。
Figures 1 to 3 show an embodiment of the present invention, in which Figure 1 is a vertical sectional view showing the overall configuration of the developing device, and Figure 2 shows the movement of each operating part of the developing device. The flowchart and FIG. 3 are its timing chart. 1 is a developing tank, 2 is a developing magnet roller (developing section), 3 is a photoreceptor (recording medium), 4 is a transporting magnet roller, 5 is a pre-stirring roller, 8 is a toner replenishment roller, 9 is a toner replenishment roller means, 10 is a toner concentration detection sensor, 11 is a timer circuit, 12 is a stirring roller, 13 is a shutter, M1, M2, M
3 is a motor.
Claims (1)
に、この現像剤供給通路を開閉しうるシヤツター
を有し、上記現像剤供給通路を通じて現像部へ供
給されるトナーの濃度を検出するトナー濃度検出
センサと、このトナー濃度検出センサが一定のレ
ベルを検出したとき、上記シヤツターの閉鎖後に
トナー補給手段にて一定量のトナーを上記現像剤
供給通路に補給するように時間制御するタイマー
回路とを備えた現像装置であつて、 現像槽内に補給されたトナーを現像後の現像剤
と予備撹拌させる予備撹拌ローラを有し、この予
備撹拌ローラが、上記タイマー回路と同期して起
動し、かつ、トナー補給手段の停止後に一定時間
遅延されて予備撹拌ローラが停止するように設定
されていることを特徴とする現像装置。[Claims for Utility Model Registration] A developer supply passage to a developing unit that develops a recording medium has a shutter that can open and close the developer supply passage, and toner is supplied to the developing unit through the developer supply passage. a toner concentration detection sensor that detects the concentration of the toner, and when the toner concentration detection sensor detects a certain level, a toner replenishing means replenishes a certain amount of toner to the developer supply passage after the shutter is closed. The developing device is equipped with a timer circuit that controls time, and has a pre-stirring roller that pre-stirs the toner replenished in the developing tank with the developer after development, and the pre-stirring roller is connected to the timer circuit. A developing device characterized in that the pre-agitation roller is set to start synchronously and to stop after a certain period of time delay after the toner replenishing means stops.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12947887U JPH0618371Y2 (en) | 1987-08-25 | 1987-08-25 | Development device |
| US07/228,527 US5009187A (en) | 1987-08-25 | 1988-08-04 | Developing device with shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12947887U JPH0618371Y2 (en) | 1987-08-25 | 1987-08-25 | Development device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6434650U true JPS6434650U (en) | 1989-03-02 |
| JPH0618371Y2 JPH0618371Y2 (en) | 1994-05-11 |
Family
ID=31383790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12947887U Expired - Lifetime JPH0618371Y2 (en) | 1987-08-25 | 1987-08-25 | Development device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0618371Y2 (en) |
-
1987
- 1987-08-25 JP JP12947887U patent/JPH0618371Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0618371Y2 (en) | 1994-05-11 |
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