Canon BJC-2000 Series Service Manual - Page 89

Paper Feed Motor Drive Transmission

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BJC-2000 Part 4: Technical Reference 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, 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 is rotated in the feeding direction, the slide arm rotates until it reaches the 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. Feed Direction Pump Operation Direction Slide Arm Locking Hole Purge Unit Sheet Feeder Gear Sheet Feeder Drive Purge Drive Gear Paper Feed Drive Position Purge Drive Position (Lock Position) Figure 4-17 Paper Feed Motor Drive Transmission 4-21

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4-21
BJC-2000
Part 4: Technical Reference
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, 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 is rotated in the feeding
direction, the slide arm rotates until it reaches the 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.
Purge Unit
Purge Drive Gear
Purge Drive Position
Paper Feed Drive Position
(Lock Position)
Sheet Feeder Drive
Sheet Feeder Gear
Locking Hole
Slide Arm
Feed Direction
Pump
Operation
Direction
Figure 4-17 Paper Feed Motor Drive Transmission