JPH01101262U - - Google Patents
Info
- Publication number
- JPH01101262U JPH01101262U JP19903587U JP19903587U JPH01101262U JP H01101262 U JPH01101262 U JP H01101262U JP 19903587 U JP19903587 U JP 19903587U JP 19903587 U JP19903587 U JP 19903587U JP H01101262 U JPH01101262 U JP H01101262U
- Authority
- JP
- Japan
- Prior art keywords
- shutter
- control means
- magnet
- roller
- developer
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 108091008695 photoreceptors Proteins 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Description
第１図ないし第４図は本考案の一実施例を示す
ものであつて、第１図は現像装置の構成を示すブ
ロツク図、第２図は現像装置を備えたフルカラー
の複写機の構成を示す断面正面図、第３図は現像
部の詳細な構成を示す断面正面図、第４図は電力
遮断時制御手段で行われる処理を示すフローチヤ
ートである。
６は感光体、８は現像装置、２２はマグネツト
、２３はスリーブ、２４は現像用マグネツトロー
ラ、３０はシヤツタ、４１はシヤツタ制御手段、
４２はマグネツトローラ制御手段、４３は電力供
給手段、４４はメインパワーリレー（電力遮断検
出手段）である。
Figures 1 to 4 show an embodiment of the present invention, in which Figure 1 is a block diagram showing the configuration of a developing device, and Figure 2 shows the configuration of a full-color copying machine equipped with the developing device. FIG. 3 is a cross-sectional front view showing the detailed structure of the developing section, and FIG. 4 is a flowchart showing the processing performed by the control means when the power is cut off. 6 is a photoreceptor, 8 is a developing device, 22 is a magnet, 23 is a sleeve, 24 is a developing magnet roller, 30 is a shutter, 41 is a shutter control means,
42 is a magnet roller control means, 43 is a power supply means, and 44 is a main power relay (power cutoff detection means).
Claims (1)
スリーブを備え、現像剤に穂立ちを形成させて静
電潜像が形成された感光体に接触させる現像用マ
グネツトローラと、 現像用マグネツトローラへの現像剤の供給を制
限するシヤツタとを備えた現像装置において、 電力の供給が断たれたことを検出する電力遮断
検出手段と、 電力の供給が断たれたときに、前記シヤツタを
閉じるシヤツタ制御手段と、 シヤツタが閉じた後、現像剤の穂立ちが形成さ
れなくなるまでマグネツトローラのスリーブを回
転させるマグネツトローラ制御手段と、 電力の供給が断たれたときに、上記シヤツタ制
御手段、およびマグネツトローラ制御手段に電力
を供給する電力供給手段とを備えたことを特徴と
する現像装置。[Scope of Claim for Utility Model Registration] A developing magnet that is equipped with a sleeve that rotatably fits around the outer periphery of a cylindrical magnet, and that causes developer to form spikes and come into contact with a photoreceptor on which an electrostatic latent image has been formed. In a developing device including a roller and a shutter that limits the supply of developer to the developing magnetic roller, a power interruption detection means for detecting that the supply of electric power has been cut off; When the shutter control means that closes the shutter and the magnet roller control means that rotates the sleeve of the magnet roller until no spikes of developer are formed after the shutter is closed, the power supply is cut off. A developing device, sometimes comprising the shutter control means and a power supply means for supplying power to the magnet roller control means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987199035U JPH073412Y2 (en) | 1987-12-26 | 1987-12-26 | Development device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987199035U JPH073412Y2 (en) | 1987-12-26 | 1987-12-26 | Development device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01101262U true JPH01101262U (en) | 1989-07-07 |
| JPH073412Y2 JPH073412Y2 (en) | 1995-01-30 |
Family
ID=31489509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987199035U Expired - Lifetime JPH073412Y2 (en) | 1987-12-26 | 1987-12-26 | Development device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073412Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6291978A (en) * | 1985-10-18 | 1987-04-27 | Fuji Xerox Co Ltd | Electronic copying device |
| JPS62251766A (en) * | 1986-04-25 | 1987-11-02 | Ricoh Co Ltd | Developing device for color copying machine |
-
1987
- 1987-12-26 JP JP1987199035U patent/JPH073412Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6291978A (en) * | 1985-10-18 | 1987-04-27 | Fuji Xerox Co Ltd | Electronic copying device |
| JPS62251766A (en) * | 1986-04-25 | 1987-11-02 | Ricoh Co Ltd | Developing device for color copying machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH073412Y2 (en) | 1995-01-30 |
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