| 摘要 |
A magnet brush cleaning apparatus for removing a toner which has been left non-transferred on the surface of a photoconductive element. The residual toner is attracted by and supported on a rotary sleeve on which a magnetic carrier forms a magnet brush. The magnetic carrier separated from the magnet brush and the residual toner are separated from each other by an electrode which is disposed in a circulatory carrier supply path in order to develop an intense electric field. The thus separated carrier is returned to the sleeve. The electrode may take the form of a roller, a plate or a wire. The residual toner on the photoconductive element has its amount of charge reduced in advance by a discharging unit. A substantial amount of the residual toner is scraped off the photoconductive element by a fur brush. A desired amount of the carrier is discharged and replenished automatically in response to lowering of the cleaning ability of the apparatus.
|
