Scavanging apparatus for an electrostatic copier

Details Scavanging apparatus for an electrostatic copier Scavanging apparatus for an electrostatic copier

G - Physics

03

G

314/38

G03G 21/00 (2006.01) G03G 21/10 (2006.01)

Patent

CA 1059202

SCAVANGING APPARATUS FOR AN ELECTROSTATIC COPIER Abstract Within a cleaning station for an electrostatic copier, a rotatable scavanging roll has a peripheral scavanging surface. Particulate matter, including toner entrained in an air stream, passes by the sca- vanger roll; the roll being electrically charged attracts a portion of the entrained particulate material. An air permeable filter is in cleaning contact with one circumferential portion of the scavanger roll for at least partially cleaning particulate matter therefrom, while simultaneously capturing entrained particulate material not attracted to the scavanging roll. In a preferred form, the cleansing filter has a relatively coarse mesh adjacent and contacting the scavanging roll and at an air-receiving portion. The filter has an exit portion of relatively fine mesh for capturing all particulate material.

256034

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