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Waste Toner Box
Residual toner adhered on the photosensitive drum without being transferred to a paper is scraped off by the cleaning blade in contact with the photosensitive drum, then fed into the waste toner box by the waste toner feed screw.
The waste toner box is supported by a spring. If the waste toner box sinks down lower than specified with the weight of collected toner, the waste toner full sensor (S17) detects the waste toner box full.
S17
Waste toner full sensor