JPS6374652U - - Google Patents
Info
- Publication number
- JPS6374652U JPS6374652U JP17039886U JP17039886U JPS6374652U JP S6374652 U JPS6374652 U JP S6374652U JP 17039886 U JP17039886 U JP 17039886U JP 17039886 U JP17039886 U JP 17039886U JP S6374652 U JPS6374652 U JP S6374652U
- Authority
- JP
- Japan
- Prior art keywords
- developer
- toner
- photoreceptor
- magnet roller
- roller
- 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
- 108091008695 photoreceptors Proteins 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims 2
- 238000013019 agitation Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Description
第１図は本考案の一実施例を示す複写機の現像
装置の断面図、第２図ａは同じく後側にトナー低
濃度を感知した可動翼制御状態を示す平面図、同
図ｂは前側にトナー低濃度を感知した場合の可動
翼制御状態を示す平面図、同図ｃは前トナーセン
サおよび後トナーセンサが正常トナー濃度を検知
した場合の可動翼制御状態を示す平面図、第３図
は可動翼制御部の構成図、第４図は本考案の他の
実施例を示す流し板の平面図、第５図は従来の複
写機の現像装置の断面図である。
１：感光体、２：現像槽、３Ａ：ローラ軸、３
：マグネツトローラ、４Ａ：撹拌軸、４：撹拌ロ
ーラ、６：現像剤調整片、７Ａ，７Ｂ：トナーセ
ンサ、１１：流し板、１２：可動翼、１３：駆動
装置、１４：制御回路。
FIG. 1 is a sectional view of a developing device of a copying machine showing an embodiment of the present invention, FIG. FIG. 3 is a plan view showing the movable blade control state when a low toner concentration is detected in FIG. 4 is a plan view of a sink plate showing another embodiment of the present invention, and FIG. 5 is a sectional view of a conventional developing device of a copying machine. 1: Photoreceptor, 2: Developer tank, 3A: Roller shaft, 3
: magnet roller, 4A: stirring shaft, 4: stirring roller, 6: developer adjustment piece, 7A, 7B: toner sensor, 11: sink plate, 12: movable blade, 13: drive device, 14: control circuit.
Claims (1)
感光体側に内装支持されたマグネツトローラと、
該マグネツトローラよりも感光体と離間する側で
前記現像槽に回転自在に軸支された撹拌ローラと
、前記マグネツトローラの上側に配され感光体へ
のトナー飛散量を規制する現像剤調整片と、前記
マグネツトローラに付着する現像剤のトナー濃度
を感知してトナー補給信号を出力する一対のトナ
ーセンサと、前記マグネツトローラの上側でかつ
前記調整片よりも感光体の離間側で調整片により
規制された現像剤を前記撹拌ローラの上側へ戻す
ための流し板と、該流し板上に揺動軸周りに揺動
自在に支持され戻り現像剤の流れを制御するため
の可動翼と、該可動翼を揺動駆動させるための駆
動装置と、前記トナーセンサのトナー濃度信号に
より前記駆動装置を制御する制御回路とを具えた
ことを特徴とする複写機の現像装置。 a developer tank disposed around the photoreceptor; a magnet roller internally supported on the photoreceptor side of the developer tank;
an agitation roller rotatably supported by the developer tank on a side farther away from the photoreceptor than the magnet roller; and a developer adjuster disposed above the magnet roller to regulate the amount of toner scattering onto the photoreceptor. a pair of toner sensors that detect the toner concentration of the developer adhering to the magnet roller and output a toner replenishment signal; a sink plate for returning the developer regulated by the adjustment piece to the upper side of the stirring roller; and a movable blade supported on the sink plate so as to be swingable around a swing axis for controlling the flow of the returning developer. A developing device for a copying machine, comprising: a driving device for swinging the movable blade; and a control circuit for controlling the driving device based on a toner concentration signal from the toner sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17039886U JPS6374652U (en) | 1986-11-05 | 1986-11-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17039886U JPS6374652U (en) | 1986-11-05 | 1986-11-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6374652U true JPS6374652U (en) | 1988-05-18 |
Family
ID=31105093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17039886U Pending JPS6374652U (en) | 1986-11-05 | 1986-11-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6374652U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009251197A (en) * | 2008-04-04 | 2009-10-29 | Sharp Corp | Developing device and image forming device |
-
1986
- 1986-11-05 JP JP17039886U patent/JPS6374652U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009251197A (en) * | 2008-04-04 | 2009-10-29 | Sharp Corp | Developing device and image forming device |
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