| 摘要 |
A xerographic cassette (10) for a printing or copying machine includes a photoreceptor drum (11), a cleaning blade (15), and waste toner conveying means (20, 22, 23) for conveying waste toner cleaned off the photoreceptor drum by the cleaning blade, into the interior (21) of the photoreceptor drum for storage. The conveying means includes a flexible helical wire (20) which acts as an auger. A curved tube portion (23) of the conveying means passes through an auxiliary waste toner container (30), the tube being perforated to release toner into the auxiliary waste toner container. Once the auxiliary container is substantially full, waste toner is conveyed into the interior (21) of the photoreceptor drum. The auxiliary container (30) is provided with access means (38) to enable it to be emptied, thereby prolonging the useful life of the cassette. When the drum interior (21) and auxiliary container (30) are both full, waste toner builds up in container housing (16) which eventually activates switch (42) on top of the housing sending out a "replace cassette" signal.
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