JPH0262574U - - Google Patents
Info
- Publication number
- JPH0262574U JPH0262574U JP14100688U JP14100688U JPH0262574U JP H0262574 U JPH0262574 U JP H0262574U JP 14100688 U JP14100688 U JP 14100688U JP 14100688 U JP14100688 U JP 14100688U JP H0262574 U JPH0262574 U JP H0262574U
- Authority
- JP
- Japan
- Prior art keywords
- charger
- set value
- switching
- voltage
- power supply
- 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
- 238000007781 pre-processing Methods 0.000 claims 4
- 238000007599 discharging Methods 0.000 claims 1
- 108091008695 photoreceptors Proteins 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Description
第１図Ａ及びＢは本考案の原理構成説明図、第
２図は本考案の第１実施例の構成説明図、第３図
は本考案の第１実施例の処理タイミングチヤート
、第４図は本考案の第２実施例の構成説明図、第
５図は本考案の第２実施例の処理タイミングチヤ
ート、第６図は本考案の第３実施例の構成説明図
、第７図は従来技術の問題点を説明するための参
照図である。
１……転写前処理帯電器、２……第１電源、３
……第２電源、４，７……切換手段、５，８……
切換時期検出・制御手段、６……高圧電源。
1A and B are diagrams for explaining the principle structure of the present invention, FIG. 2 is a diagram for explaining the composition of the first embodiment of the present invention, FIG. 3 is a processing timing chart of the first embodiment of the present invention, and FIG. 4 is an explanatory diagram of the configuration of the second embodiment of the invention, FIG. 5 is a processing timing chart of the second embodiment of the invention, FIG. 6 is an explanatory diagram of the configuration of the third embodiment of the invention, and FIG. 7 is a conventional diagram. FIG. 2 is a reference diagram for explaining technical problems. 1... Transfer pretreatment charger, 2... First power supply, 3
...Second power supply, 4,7...Switching means, 5,8...
Switching timing detection/control means, 6...High voltage power supply.
Claims (1)
現像する現像装置と、該現像されたトナー像を用
紙に転写する転写装置との間に帯電器を設け、該
帯電器によるコロナ放電により、該静電潜像及び
トナー像の電位を調整するようにした画像形成装
置の転写前処理装置において、 前記帯電器に第１設定値の電圧を供給する第１
電源と、該帯電器に第２設定値の電圧を供給する
第２電源と、該第１及び第２電源による帯電器へ
の電圧供給を選択的に切り換える手段と、該電源
切換手段による電源の切り換え時期を検出・制御
する手段とを設けて構成したことを特徴とする画
像形成装置の転写前処理装置。 (2) 感光体上に形成された静電潜像をトナーで
現像する現像装置と、該現像されたトナー像を用
紙に転写する転写装置との間に帯電器を設け、該
帯電器によるコロナ放電により、該静電潜像及び
トナー像の電位を調整するようにした画像形成装
置の転写前処理装置において、 前記帯電器に第１設定値及び第２設定値の電圧
を供給しうる高圧電源と、該高圧電源による帯電
器への供給電圧の設定値を選択的に切り換える手
段と、該設定値切換手段による設定値の切り換え
時期を検出・制御する手段とを設けて構成したこ
とを特徴とする画像形成装置の転写前処理装置。[Claims for Utility Model Registration] (1) A charging device is provided between a developing device that develops an electrostatic latent image formed on a photoconductor with toner and a transfer device that transfers the developed toner image onto paper. In a transfer pre-processing device for an image forming apparatus, the charger is provided with a corona discharge to adjust the electric potential of the electrostatic latent image and the toner image, comprising supplying a voltage of a first set value to the charger. 1st
a power supply; a second power supply for supplying a voltage of a second set value to the charger; means for selectively switching the voltage supply to the charger by the first and second power supplies; and a power supply switching means for switching the power supply. 1. A transfer preprocessing device for an image forming apparatus, comprising means for detecting and controlling switching timing. (2) A charger is provided between a developing device that develops the electrostatic latent image formed on the photoreceptor with toner and a transfer device that transfers the developed toner image onto paper, and the charger generates corona. In a transfer pre-processing device of an image forming apparatus, which adjusts the potential of the electrostatic latent image and toner image by discharging, a high-voltage power source capable of supplying voltages of a first set value and a second set value to the charger; and means for selectively switching the set value of the voltage supplied to the charger by the high-voltage power supply, and means for detecting and controlling the timing of switching the set value by the set value switching means. A transfer pre-processing device for an image forming apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14100688U JPH0262574U (en) | 1988-10-31 | 1988-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14100688U JPH0262574U (en) | 1988-10-31 | 1988-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0262574U true JPH0262574U (en) | 1990-05-10 |
Family
ID=31405690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14100688U Pending JPH0262574U (en) | 1988-10-31 | 1988-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0262574U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013125100A (en) * | 2011-12-13 | 2013-06-24 | Canon Inc | Image forming apparatus |
-
1988
- 1988-10-31 JP JP14100688U patent/JPH0262574U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013125100A (en) * | 2011-12-13 | 2013-06-24 | Canon Inc | Image forming apparatus |
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