JPH01140569U - - Google Patents
Info
- Publication number
- JPH01140569U JPH01140569U JP3815788U JP3815788U JPH01140569U JP H01140569 U JPH01140569 U JP H01140569U JP 3815788 U JP3815788 U JP 3815788U JP 3815788 U JP3815788 U JP 3815788U JP H01140569 U JPH01140569 U JP H01140569U
- Authority
- JP
- Japan
- Prior art keywords
- opening
- closing
- switching means
- developing
- closing device
- 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
- 238000010586 diagram Methods 0.000 description 3
- 108091008695 photoreceptors Proteins 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
- Color Electrophotography (AREA)
Description
第１図ａは本考案の一実施例を示す複写機の現
像槽の断面図、同図ｂは閉塞板切換タイミングチ
ヤート、同図ｃは制御部の構成図、第２図は同閉
塞板切換手段の正面図、第３図は撹拌ローラの斜
視図、第４図はクラツチの断面図、第５図は複写
機現像装置の電子写真プロセスを示す構成図であ
る。
１，２：駆動ローラ、３：感光体、４：現像槽
、２２：現像ローラ、２３：搬送ローラ、３５：
開閉装置、３６：切換手段、３７：フランジ、３
８：閉塞板、３９：スプリングクラツチ、４０：
クラツチカバー、４３：揺動アーム、４４：ソレ
ノイド、４５：ばね、５５：制御部、５６：感光
体位置検出器、５７：ソレノイド駆動回路、５８
：現像部駆動回路。
Fig. 1a is a cross-sectional view of a developing tank of a copying machine showing an embodiment of the present invention, Fig. 1b is a timing chart for switching the closing plate, Fig. 1c is a block diagram of the control section, and Fig. 2 is a diagram for switching the closing plate. 3 is a perspective view of the stirring roller, FIG. 4 is a sectional view of the clutch, and FIG. 5 is a configuration diagram showing the electrophotographic process of the developing device of the copying machine. 1, 2: Drive roller, 3: Photoreceptor, 4: Developer tank, 22: Developing roller, 23: Conveyance roller, 35:
Switching device, 36: Switching means, 37: Flange, 3
8: Closure plate, 39: Spring clutch, 40:
Clutch cover, 43: Swing arm, 44: Solenoid, 45: Spring, 55: Control section, 56: Photoreceptor position detector, 57: Solenoid drive circuit, 58
:Developing unit drive circuit.
Claims (1)
と、該現像部に現像剤を供給する現像剤供給通路
を開閉する開閉装置と、該開閉装置を開状態と閉
状態とのうちの一方に切換える切換手段と、該切
換手段を制御する制御部とを具え、該制御部は、
記録媒体の画像領域終了前に前記開閉装置を閉と
する信号を前記切換手段に出力する機能を有せし
められたことを特徴とする現像装置。 A developing section arranged to face a recording medium and performing development; an opening/closing device opening/closing a developer supply path for supplying developer to the developing section; and one of an open state and a closed state of the opening/closing device. comprising a switching means for switching and a control section for controlling the switching means, the control section comprising:
A developing device characterized in that it has a function of outputting a signal for closing the opening/closing device to the switching means before the end of the image area of the recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3815788U JPH01140569U (en) | 1988-03-22 | 1988-03-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3815788U JPH01140569U (en) | 1988-03-22 | 1988-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01140569U true JPH01140569U (en) | 1989-09-26 |
Family
ID=31264723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3815788U Pending JPH01140569U (en) | 1988-03-22 | 1988-03-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01140569U (en) |
-
1988
- 1988-03-22 JP JP3815788U patent/JPH01140569U/ja active Pending
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