Image forming apparatus for cleaning residual toner from an inte

Details Image forming apparatus for cleaning residual toner from an inte Image forming apparatus for cleaning residual toner from an inte

1996-07-03

1998-05-12

Lesmes, George F.

Electrophotography

Internal machine environment

Particle or contaminant control

399 99, 399100, 399123, 399129, 399308, 399349, 399353, 399354, 430125, 430126, G03G 1516

Patent

active

057521301

ABSTRACT:
An image forming apparatus includes a first image-bearing member, latent image-forming unit for forming an electrostatic latent image on the first image-bearing member, developer for developing the electrostatic latent image with a toner to form a toner image, an intermediate transfer member for receiving the toner image by primary transfer and transferring the toner image onto a second image-bearing member by secondary transfer, a charging member for charging a residual toner remaining on the intermediate transfer member after the secondary transfer, and a recovery member for recovering the charged residual toner at a recovery position by voltage application. The intermediate transfer member exhibits a charging characteristic such that it has a surface potential of at most 500 volts as an absolute value at the recovery position. The intermediate transfer member having such a charging characteristic is effective in suppressing an occurrence of electric discharge at the recovery position of the residual toner to provide an excellent cleaning performance.

REFERENCES:
patent: 4903081 (1990-02-01), Takahashi
patent: 5115281 (1992-05-01), Ohtsuka et al.

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