Ricoh D017 Service Manual page 1120

Overview
1
From A4/LT (8 / " x 11") LEF to 400mm length
2
There are two sheets of paper in the paper feed path at the same time. The interleave
method is used. For sheets longer than 400 mm, there is no interleaving.
The drawing above shows the paper movement with the interleave method for two sheets
of paper. The printing is done as follows:
D369 16 SM