JPH0392652U - - Google Patents

Info

Publication number
JPH0392652U
JPH0392652U JP7890U JP7890U JPH0392652U JP H0392652 U JPH0392652 U JP H0392652U JP 7890 U JP7890 U JP 7890U JP 7890 U JP7890 U JP 7890U JP H0392652 U JPH0392652 U JP H0392652U
Authority
JP
Japan
Prior art keywords
image
forming apparatus
developer carrier
line width
image forming
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
Application number
JP7890U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP7890U priority Critical patent/JPH0392652U/ja
Publication of JPH0392652U publication Critical patent/JPH0392652U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Developing For Electrophotography (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの考案の一実施例を示すレーザプリ
ンタの感光体ドラム回りの構成図、第２図は現像
バイアス電圧とトナー付着量との関係を示す線図
、第３図はトナー付着量とＶｐ／Ｖｇとの関係を
示す線図、第４図は１ドラツトライン線幅とＶｐ
／Ｖｇとの関係を示す線図、第５図は感光体ドラ
ムの表面温度と感度との関係を示す線図、第６図
は露光後の感光体ドラムの表面電位分布例を示す
線図である。 １……感光体ドラム、２……帯電チヤージヤ、
３……露光光学系、４……現像装置、５……現像
ローラ、９……電圧印加装置、１０……反射型フ
オトセンサ（線幅検出手段）、１５……ＡＤ変換
器、１６……演算装置、１７……制御装置、１８
……電圧可変装置。 Fig. 1 is a diagram showing the configuration around the photosensitive drum of a laser printer showing an embodiment of this invention, Fig. 2 is a diagram showing the relationship between the developing bias voltage and the amount of toner adhering, and Fig. 3 is a diagram showing the relationship between the amount of toner adhering and the amount of toner adhering. A diagram showing the relationship between Vp/Vg, and Figure 4 shows the relationship between 1-drat line width and Vp.
/Vg, Figure 5 is a diagram showing the relationship between the surface temperature of the photoreceptor drum and sensitivity, and Figure 6 is a diagram showing an example of the surface potential distribution of the photoreceptor drum after exposure. be. 1...Photosensitive drum, 2...Electrostatic charger,
3...Exposure optical system, 4...Developing device, 5...Developing roller, 9...Voltage application device, 10...Reflection type photo sensor (line width detection means), 15...AD converter, 16...Calculation Device, 17... Control device, 18
...Voltage variable device.

Claims (1)

【実用新案登録請求の範囲】 光情報に応じて感光体上に静電潜像を形成し、
現像剤担持体によつてその静電潜像に現像剤を供
給して前記感光体上に顕像を形成し、それを記録
紙上に転写する電子写真方式の画像形成装置にお
いて、 前記感光体上に形成される顕像の線幅を検出す
る線幅検出手段と、 該手段によつて検出された検出線幅と予め設定
された基準線幅とを比較して、検出線幅が基準線
幅と等しくなるように前記現像剤担持体に印加す
る電圧を変化させる現像バイアス制御手段とを設
けたことを特徴とする画像形成装置。[Scope of claim for utility model registration] Forming an electrostatic latent image on a photoreceptor according to optical information,
In an electrophotographic image forming apparatus in which a developer is supplied to the electrostatic latent image by a developer carrier to form a developed image on the photoreceptor, and the image is transferred onto recording paper, the image forming apparatus comprises: a line width detecting means for detecting the line width of a visualized image formed on the image; An image forming apparatus comprising: a developing bias control means for changing a voltage applied to the developer carrier so that the voltage is equal to the voltage applied to the developer carrier.
JP7890U 1990-01-05 1990-01-05 Pending JPH0392652U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7890U JPH0392652U (en) 1990-01-05 1990-01-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7890U JPH0392652U (en) 1990-01-05 1990-01-05

Publications (1)

Publication Number Publication Date
JPH0392652U true JPH0392652U (en) 1991-09-20

Family

ID=31504048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7890U Pending JPH0392652U (en) 1990-01-05 1990-01-05

Country Status (1)

Country Link
JP (1) JPH0392652U (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60189766A (en) * 1984-03-09 1985-09-27 Ricoh Co Ltd Image density controller
JPH01101564A (en) * 1987-10-14 1989-04-19 Mita Ind Co Ltd Automatic density adjusting method for image forming device
JPH01101563A (en) * 1987-10-14 1989-04-19 Mita Ind Co Ltd Automatic density adjusting method for image forming device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60189766A (en) * 1984-03-09 1985-09-27 Ricoh Co Ltd Image density controller
JPH01101564A (en) * 1987-10-14 1989-04-19 Mita Ind Co Ltd Automatic density adjusting method for image forming device
JPH01101563A (en) * 1987-10-14 1989-04-19 Mita Ind Co Ltd Automatic density adjusting method for image forming device

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