Image forming apparatus

Electrophotography – Cleaning of imaging surface – Having handling of removed material

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Details

399 43, 399 99, G03G 2100, G03G 1500

Patent

active

056193165

ABSTRACT:
In an image forming apparatus, a toner collection mode is executed when a series of image formation modes ends and when the image formation mode is continuously repeated a preselected number of times. A toner image sensing mode for sensing a reflection density from a reference toner image is executed every time the image formation mode is repeated a preselected number of times. The apparatus is capable of surely and efficiently removing toner left on an image carrier after image transfer, and collecting the reference toner image with a developing unit. The reference toner image is prevented from contaminating an image transferring unit and a cleaning unit.

REFERENCES:
patent: 5124757 (1992-06-01), Ikegawa
patent: 5495325 (1996-02-01), Nagahara

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