21. Duplex section
Theory of Operation Ver. 8.0 Jun. 2008
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Composition/Operation
21.3 Operation
21.3.1
Duplex unit transport control
• The paper transported to the switchback part stops at the stop position 1 and then the
switchback roller turns around to transport the sheet to the duplex unit.
• When a sheet of paper being less than 127 mm is passing by the ADU transport roller/2
in the duplex unit, if the preceding paper has not reached the timing roller, the sheet
stops at the stop position 2.
• The paper transported to the duplex part always stops at the stop position 3 and wait
until paper is re-supplied.
• When the paper is supplied, it is transported to the timing roller.
A00JT2C245AA
Switchback part
Switchback roller
Stop position 1
ADU transport roller/1
Stop position 2
Timing roller
ADU transport roller/3
ADU transport sensor/2 (PS48)
Stop position 3
ADU transport roller/4
ADU transport sensor/1 (PS47)
ADU transport roller/2
Duplex part
Theory of Operation Y107522-3
