Canon imageRUNNER 2270 Service Manual page 231

Chapter 7
Developing Unit Specifications
Developing cylinder
diameter
Development method
Toner
Toner level detection
Toner Cartridge Specifications
Toner level detection
Toner variable resistor
Others
separation method
Waste toner
7-2
20 mm
by dry, single-component toner projection method (application of
AC + DC)
single-component insulating magnetic toner
by toner level sensor (inside sub hopper and developing assembly)
T-7-4
none
1220 g (iR3570/iR4570)
1060 g (iR2270/iR2870)
T-7-5
by static eliminator + curvature
collection to waste toner case