JPH01181045U - - Google Patents
Info
- Publication number
- JPH01181045U JPH01181045U JP7633588U JP7633588U JPH01181045U JP H01181045 U JPH01181045 U JP H01181045U JP 7633588 U JP7633588 U JP 7633588U JP 7633588 U JP7633588 U JP 7633588U JP H01181045 U JPH01181045 U JP H01181045U
- Authority
- JP
- Japan
- Prior art keywords
- visible image
- output
- power source
- adjusting
- bias power
- 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 4
- 230000007613 environmental effect Effects 0.000 description 1
Landscapes
- Developing For Electrophotography (AREA)
Description
第１図は本案の現像装置のバイアス電圧調整回
路のブロツクダイヤグラムを示す図、第２図は制
御回路の出力電圧信号波形図、第３図はバイアス
電圧とトナー付着量を示す図、第４図は電子写真
装置の印字プロセス説明図、第５図は現像剤の拡
大図、第６図は環境湿度と画像濃度を示す図であ
る。
１……感光ドラム、６……現像装置、８……バ
イアス電源、１０……転写器、２０……湿度セン
サ、２１……制御回路、２２……増幅回路。
Fig. 1 is a block diagram of the bias voltage adjustment circuit of the developing device of the present invention, Fig. 2 is an output voltage signal waveform diagram of the control circuit, Fig. 3 is a diagram showing the bias voltage and toner adhesion amount, and Fig. 4 5 is an enlarged view of the developer, and FIG. 6 is a diagram showing environmental humidity and image density. DESCRIPTION OF SYMBOLS 1... Photosensitive drum, 6... Developing device, 8... Bias power supply, 10... Transfer device, 20... Humidity sensor, 21... Control circuit, 22... Amplifying circuit.
Claims (1)
する手段、この静電的潜像を可視像として形成す
る現像手段、この可視像を記録体上に静電的に転
写する手段を有し、装置内に配置された湿度セン
サ出力によつて上記現像手段のバイアス電源の出
力を調整する手段を有する電子写真装置において
、上記バイアス電源の出力電圧を(a)パルス幅変
化、(b)パルス数変化、(c)振幅変化の一つ又は複
数の組合せ信号として調整し、上記絶縁ドラム上
に付着する現像剤の可視像量を調整することを特
徴とする電子写真装置。 Means for forming an electrostatic latent image on an insulating drum with information, developing means for forming this electrostatic latent image as a visible image, and means for electrostatically transferring this visible image onto a recording medium. and a means for adjusting the output of the bias power source of the developing means based on the output of a humidity sensor disposed within the apparatus, the output voltage of the bias power source is controlled by (a) a pulse width change, ( An electrophotographic apparatus characterized in that the amount of visible image of the developer deposited on the insulating drum is adjusted by adjusting one or more of a combination signal of b) pulse number change and (c) amplitude change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7633588U JPH01181045U (en) | 1988-06-10 | 1988-06-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7633588U JPH01181045U (en) | 1988-06-10 | 1988-06-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01181045U true JPH01181045U (en) | 1989-12-27 |
Family
ID=31301365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7633588U Pending JPH01181045U (en) | 1988-06-10 | 1988-06-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01181045U (en) |
-
1988
- 1988-06-10 JP JP7633588U patent/JPH01181045U/ja active Pending
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