Ricoh B064 Service Manual page 768

OVERVIEW
Pick-up, Separation, Feed. Non-contact, maintenance free FRR sysem. (
Handling Paper> Paper Feed Methods> Forward and Reverse Roller (FRR))
Tray Lift. Tray lift motor and timing belt raise and lower the paper tray.
Paper Size Detection. The side fences cannot be adjusted by customers. The
paper size must be entered with SP5959 005. For details, see SP5959 in section "4.
Service Tables."
Paper Height Detection. A feeler and four photointerrupters are used.
Paper End Detection. A reflective sensor on the upper stay detects paper end.
B473 8 SM