Ricoh B264 Service Manual page 691

PAPER FOLDER MECHANISM
In the case of 10 sheets or more of A4 or 8 " x 11" paper, folding is done twice for
1/2
20 mm of the leading edge to fold the paper more firmly.
When the leading edge of the folded paper passes 20 mm from the folder rollers,
the folder roller motor reverses to feed the paper back 20 mm. During this action,
the folder plate stays at the return position.
Then, the folder roller motor rotates forward again to feed the set of papers out and
the folder plate goes back to the home position.
SM 17 B546