JP2011013431A5

JP2011013431A5 -

Info

Publication number: JP2011013431A5
Application number: JP2009156980A
Authority: JP
Filing date: 2009-07-01
Publication date: 2012-07-05
Anticipated expiration: 2029-07-01

Description

本発明の画像形成装置は、感光層を配置した感光体と、前記感光体の表面に当接して配置された帯電部材と、前記感光体を帯電させるために直流電圧に交流電圧を重畳した振動電圧を前記帯電部材に印加する電源と、交流試験電圧を前記帯電部材に印加して検出した交流電流に応じて前記交流電圧の定電圧を設定する交流電圧設定モードを実行する制御手段とを備えたものである。そして、前記感光層の膜厚を電気的に検出する検出手段を備え、前記交流電圧設定モードでは、前記検出手段の検出結果に基づいて、前記感光層の膜厚が小さくなるほど前記交流試験電圧を低く設定する。 The image forming apparatus of the present invention, a photosensitive member arranged sensitive light layer, wherein the photosensitive member and the charging member disposed in contact with the surface of and an AC voltage superimposed on a DC voltage to charge the photosensitive member A power source for applying an oscillating voltage to the charging member; and a control means for executing an AC voltage setting mode for setting a constant voltage of the AC voltage according to an AC current detected by applying an AC test voltage to the charging member. It is provided. And detecting means for electrically detecting the film thickness of the photosensitive layer. In the AC voltage setting mode, based on the detection result of the detecting means, the AC test voltage is reduced as the photosensitive layer thickness decreases. Set low.

Claims

A photosensitive member arranged sensitive light layer, wherein the photosensitive member and the charging member disposed in contact with the surface of the applied vibration voltage obtained by superimposing an AC voltage on a DC voltage to charge the photosensitive member to said charging member An image forming apparatus comprising: a power source for performing an AC voltage setting mode for setting a constant voltage of the AC voltage according to an AC current detected by applying an AC test voltage to the charging member;
A detection means for electrically detecting the film thickness of the photosensitive layer;
In the AC voltage setting mode, the AC test voltage is set lower as the film thickness of the photosensitive layer becomes smaller based on the detection result of the detection means.

A photosensitive member arranged sensitive light layer, wherein the photosensitive member and the charging member disposed in contact with the surface of the applied vibration voltage obtained by superimposing an AC voltage on a DC voltage to charge the photosensitive member to said charging member An image forming apparatus comprising: a power source for performing an AC voltage setting mode for setting a constant current of the AC voltage according to an AC voltage detected by applying an AC test current to the charging member;
A detection means for electrically detecting the film thickness of the photosensitive layer;
In the AC voltage setting mode, the AC test current is set to be lower as the film thickness of the photosensitive layer is smaller based on the detection result of the detection means.