JPH0380456U - - Google Patents
Info
- Publication number
- JPH0380456U JPH0380456U JP14188389U JP14188389U JPH0380456U JP H0380456 U JPH0380456 U JP H0380456U JP 14188389 U JP14188389 U JP 14188389U JP 14188389 U JP14188389 U JP 14188389U JP H0380456 U JPH0380456 U JP H0380456U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- developer
- developing device
- replenishing
- tank
- 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 7
- 238000003756 stirring Methods 0.000 claims description 7
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図に本考案の一実施としての現像装置を示
す模式的断面図、第２図ａ乃至第２図ｄは夫々上
記現像装置における撹拌ロールの動作を示す各正
面図、第３図は従来の現像装置を示す模式的断面
図、第４図は従来の現像装置における撹拌ロール
を示す正面図である。
１，３０……現像装置、２，３１……補給トナ
ー収容槽、３，３２……現像槽、４，３３……ト
ナー補給ロール、５，３４……撹拌ロール、５ａ
１〜５ａ６，３４ａ，３４ａ１……撹拌フイン、
６，３５……感光体ドラム、７，３６……現像ス
リーブ、９，３７……トナー濃度検知センサ、９
ａ，３７ａ……検知面、Ｐ……連通口、Ｑ……濃
度検出領域、Ｄ……現像位置。
FIG. 1 is a schematic sectional view showing a developing device as an embodiment of the present invention, FIGS. 2 a to 2 d are front views showing the operation of the stirring roll in the developing device, and FIG. 3 is a conventional one. FIG. 4 is a schematic cross-sectional view showing a developing device, and FIG. 4 is a front view showing a stirring roll in the conventional developing device. 1, 30... Developing device, 2, 31... Replenishment toner storage tank, 3, 32... Developer tank, 4, 33... Toner supply roll, 5, 34... Stirring roll, 5a
1-5a6, 34a, 34a1... Stirring fin,
6, 35... Photosensitive drum, 7, 36... Developing sleeve, 9, 37... Toner concentration detection sensor, 9
a, 37a...detection surface, P...communication port, Q...density detection area, D...development position.
Claims (1)
槽と、前記現像槽の上部に連設した補給用トナー
を収容するトナー収容槽と、前記現像槽内に回転
可能に設けた現像剤撹拌部材と、前記現像剤撹拌
部材に検知面を対向させて配設した前記現像剤中
のトナー濃度を検出するトナー濃度検知部材と、
前記トナー濃度の検出値に基づき前記補給用トナ
ーを前記現像槽内に落下補給するトナー補給部材
とを備えた現像装置において、前記トナー濃度検
知部材と前記トナー補給部材との配置を補給トナ
ーが前記検知面の近傍へ落下可能に設定し、前記
現像剤撹拌部材の回転方向を前記検知面近傍領域
に存在する現像剤を押し上げる方向に設定したこ
とを特徴とする現像装置。 a developer tank that stores a developer containing toner and a carrier; a toner storage tank that stores replenishment toner that is connected to the top of the developer tank; and a developer stirring member that is rotatably provided in the developer tank; a toner concentration detection member for detecting toner concentration in the developer, the detection surface of which is disposed to face the developer stirring member;
In the developing device, the developing device includes a toner replenishing member that drops and replenishes the replenishing toner into the developer tank based on the detected value of the toner concentration, the arrangement of the toner concentration detecting member and the toner replenishing member is such that the replenishing toner is 1. A developing device, wherein the developing device is configured to be able to drop near a detection surface, and the rotating direction of the developer stirring member is set in a direction that pushes up developer present in a region near the detection surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14188389U JPH0380456U (en) | 1989-12-07 | 1989-12-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14188389U JPH0380456U (en) | 1989-12-07 | 1989-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0380456U true JPH0380456U (en) | 1991-08-19 |
Family
ID=31688743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14188389U Pending JPH0380456U (en) | 1989-12-07 | 1989-12-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0380456U (en) |
-
1989
- 1989-12-07 JP JP14188389U patent/JPH0380456U/ja active Pending
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