3-40 Confidential
Normal SF mode High-speed feed mode Purge mode
Paper feed motor
PF roller gear L
PF roller gear R
Clutch gear Switching to normal SF mode,
high-speed feed mode, or
purge mode
Switching depending upon
the motor rotational direction
CW:
CCW:
Paper feed roller
SF changeover gear
SF idle gears HS idle gear
Paper pull-in gear shaft
Gear train in the paper
pull-in roller holder
Purge cam Tube pump
Paper pull-in rollers
Purge bevel gear
Planetary arm
HS changeover gear Purge gear
[CW]
[CCW]
[CCW/CW] [CW] [CW/CCW]
[Reverse/Forward] [Forward] [Forward/Reverse]
[Reverse/Forward] [Forward]
Motor rotation
Clockwise
Counterclockwise
Maintenance unit
Switching operation modes--Normal SF, high-speed feed, and purge modes
The table below shows the relationship between the position of the mode switching lever, the
rotational directions of the paper feed motor, paper feed roller, and paper pull-in rollers, and the
maintenance unit components driven.
Position of mode
switching lever
Operation
Paper feed motor
(viewed from the
output gear side)
Paper feed
roller
Paper pull-
in rollers
Component
driven in
maintenance unit
Paper feeding Counterclockwise Reverse Forward ---
Leftmost position
(Normal SF mode)
Printing Clockwise Forward (Reverse)* ---
High-speed paper
feeding & printing
Clockwise Forward Forward ---
2nd position from the
left
(High-speed feed
mode)
Paper reversing Counterclockwise Reverse Reverse ---
Clockwise --- --- Purge cam
Right position
(Purge mode)
Purging
Counterclockwise --- --- Tube pump
*The paper pull-in rollers are idling in the reverse direction.