JP2000315003A5

JP2000315003A5 -

Info

Publication number: JP2000315003A5
Application number: JP1999124782A
Authority: JP
Filing date: 1999-04-30
Publication date: 2004-11-18

Description

【００３２】
（１）電子写真感光体と、該電子写真感光体に接触し電圧を印加されることによって該電子写真感光体を帯電する帯電部材と、帯電された該電子写真感光体を露光して静電潜像を形成する露光手段と、該静電潜像を現像して該電子写真感光体上にトナーの像を形成する現像手段と、該電子写真感光体上の該トナーの像を転写材へ転写する転写手段と、を有している画像形成装置において、
該トナーの形状係数ＳＦ−１が１００〜１５０でありかつ形状係数ＳＦ−２が１００〜１４０であり、
該帯電部材の表面の静摩擦係数が１．０以下であることを特徴とする画像形成装置である。[0032]
(1) an electrophotographic photosensitive member, an electrostatic by exposing a charging member for charging said electrophotographic photosensitive member by being applied a voltage in contact with said electrophotographic photosensitive member, the charged the electrophotographic photosensitive member an exposure means for forming a latent image, a developing means for forming an image of toner onto the electrophotographic photosensitive member by developing the electrostatic latent image, the image of the toner on the electrophotographic photosensitive member to a transfer material in the image forming apparatus is closed and transfer means for transferring, a,
The shape factor SF-1 of the toner is 100 to 150 and the shape factor SF-2 is 100 to 140,
The image forming apparatus is characterized in that a static friction coefficient of the surface of the charging member is 1.0 or less.

【００３３】
（２）該現像手段が、トナー担持体に担持されているトナーを該電子写真感光体表面に接触させて該静電潜像を現像して、トナーの像を該電子写真感光体上に形成する現像手段であり、且つ該トナーの像を転写材に転写した後に該電子写真感光体上に残留トナーがある場合に、該残留トナーが該トナー担持体に回収可能に構成されている請求項１記載の画像形成装置である。[0033]
(2) developing means, the toner carried on the toner carrying member is developed the electrostatic latent image into contact with the surface of the electrophotographic photosensitive member, forming an image of toner onto the electrophotographic photosensitive member developing a means and when the image of the toner is residual toner on the electrophotographic photosensitive member after transferring the transfer material, according to claim in which the residual toner is recovered configured to be able to the toner carrying member to 1 is the image forming apparatus according to 1 ).

Claims

An electrophotographic photosensitive member, a charging member for charging said electrophotographic photosensitive member by being applied a voltage in contact with said electrophotographic photosensitive member, an electrostatic latent image by exposing the charged the electrophotographic photosensitive member an exposure means for forming, transferring and developing means for forming an image of toner onto the electrophotographic photosensitive member by developing the electrostatic latent image, the image of the toner on the electrophotographic photosensitive member to a transfer material transfer in the image forming apparatus is closed and means,,
The shape factor SF-1 of the toner is 100 to 150 and the shape factor SF-2 is 100 to 140,
An image forming apparatus, wherein a static friction coefficient of a surface of the charging member is 1.0 or less.

Developing means developing means, the toner carried on the toner carrying member is brought into contact with the surface of the electrophotographic photosensitive member by developing the electrostatic latent image to form an image of toner onto the electrophotographic photosensitive member , and the and if there is a residual toner on the electrophotographic photosensitive member after transferring to a transfer material the image of the toner, according to claim 1 wherein said residual toner is more recoverable configured to the toner carrying member the image forming apparatus.

The image forming apparatus according to claim 1, wherein a ten-point average surface roughness Rz of the charging member is equal to or less than a toner particle diameter.

The image forming apparatus according to any one of claims 1 to 3, wherein the surface layer of the charging member contains a silicone oil.

The image forming apparatus according to any one of claims 1 to 4, wherein the charging member has a roller shape.

The image forming apparatus according to any one of claims 1 to 5, wherein the toner is a toner produced by using a polymerization method and is spherical.

The charging member has a static friction coefficient of 0 . The image forming apparatus according to any one of claims 1 to 6, further comprising a surface layer containing 50 or less resin.