Fujitsu ULTIMA90 Maintenance Manual page 137

Stud for shift gear F
The rib which shift
the shift gear R
Stud for shift gear R
5.2.2.2 Paper feed operation
Figure 5.13 shows the driving system of the paper feed mechanism.
The LF and TR motors mounted on the frame via gears feed paper. The LF motor operates for both cut sheet
paper and continuous forms to rotate the first and second transport rollers and platen roll. The TR motor operates
only for continuous forms to rotate the front or rear tractor to feed paper.
(1) Power transmission
Driving the transport roller
The transport roller is driven by the LF motor, which rotates the first and second transport roller gears (pulleys)
via the pulley gear and timing belt. Driving the front tractor
The front tractor is driven by the TR motor, which transmits power to the tractor driving gear via shaft gear F
Driving the rear tractor
The rear tractor is driven by the TR motor, which transmits power to the tractor driving gear via shaft gear R, idle
gear, 2-step gear, and TR idle gear.
OC lever L
The rib which shift
the shift gear F
Figure 5.12 HCPP mechanism
137
OC lever R
OC cam
HCPP Motor
OC slide cam