Ricoh Di-C1.5a Manual page 264

Paper weight range: 60 – 105 g/m
Paper size range: A3/DLT – A5 LEF
Duplex speed: 25 cpm (A4/LT LEF, BW/FC)
For the 20 cpm models, duplex speed is also 25
cpm
Cannot make duplex outputs from the bypass
tray.
Cannot make duplex outputs on thick paper.
Two sheets can be interleaved (A4/LT).
Slide 264
How can the 20cpm model achieve 25 cpm in duplex mode?
The paper feed speed after leaving the fusing unit increases to about double
during switchback and inverting.
Duplex Specifications
264
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Di-C1.5 Training