4 ] Purge Mechanism Details - Brother MFC260C Service Manual

[ 4 ] Purge mechanism details

This mechanism draws its power from the paper feed motor on the left side of the engine chassis.
Power transmission route from paper feed motor to maintenance unit
The paper feed motor drives the PF roller gear L that rotates the paper feed roller. At the right end
of the roller (left in the illustration because the view is from the rear) is the PF roller gear R which
always meshes with the clutch gear.
The clutch gear also meshes with the SF changeover gear when the mode switching lever is in the
leftmost position (as viewed from the front). When the head/carriage unit travels from the left to
right to reach the purge position, a tab on the carriage rear panel pushes the mode switching lever to
the right (left in the illustration). The clutch gear spring pushes the clutch gear to the right, away
from the SF changeover gear and HS changeover gear, to mesh with the purge gear. This way, the
clutch gear switches the operation mode to the purge mode.
The power transmission route and operation mode switching are detailed in
(Right)
Mode switching lever
Switching lever spring
Paper feed roller
(Front)
Clutch gear
Purge bevel gear
PF roller gear R
Purge gear
3-29
Section 3.2.2.4.
PF roller gear L
Paper feed motor
Clutch gear spring
SF changeover gear
HS changeover gear
Confidential
(3_06)