Canon BJC-1000 Service Manual page 79

BJC-1000
4) Switching the paper feed motor drive transmission
The paper feed motor drives either the paper feed, purge unit, or cut sheet feeder
according to the position of the carriage. When the carriage is not at the right end,
the slide arm is locked by the purge unit's slide lock pin. In this condition, the
paper feed is driven by the feed roller. When the carriage is at the capping position,
the slide arm is unlocked and the paper feed motor drives the purge unit and sheet
feeder.
When the slide arm is unlocked and the feed roller rotates in the feeding direction,
the slide arm rotates until it reaches the cut sheet feeder gear to drive the gear.
When the slide arm is unlocked and the feed roller is rotated in the opposite direction of
the feeding direction, the slide arm rotates until it reaches the purge drive gear to drive
the gear.
Cut Sheet Feeder's Gear
Feed Direction
Pump
Operation
Direction
Sheet Feed Position
Figure 4-20 Paper Feed Motor Drive Transmission
Slide Arm
Locking Hole
Paper Feed Position
(Lock Position)
4-21
Part 4: Technical Reference
Purge Unit
Purge Drive Gear
Purge Drive Position