Canon iPF9000S - Function Description

Troubleshooting Guide
6-2
■Function Description
Component name Function
Main controller A PCB that controls the printer as a whole.
Carriage relay PCB A relay PCB used to connect the carriage and the main controller with
each other by a flat cable. With the iPF5000 Series, it is combined into a
single assembly together with the head relay PCB described below.
Head relay PCB A PCB that relays head signals and that performs preprocessing on the
multisensor signals.
On the iPF5000 Series, the head relay PCB is expressed as “carriage
PCB.”
Carriage encoder A film on which slits are printed to generate an encoder pulse signal to
calculate the head position. The sensor is attached to the carriage unit.
Ink tank A color-specific replaceable cartridge ink tank (consumable part)
Subbuffer Functions as an air passage to fill the ink tank with air and also as a
reservoir for the reflux ink in the tube.
(Ink supply) Valve A valve that is opened and closed to augment the internal pressure in the
path of ink supply (by generating a negative pressure). In cleaning B, in
which a negative pressure is produced, the valve vents accumulated air
from the head.
Lift motor The drive motor that automatically regulates the distance between the
head and paper. The iPF5000 Series uses the eccentric cam of the
carriage rail to move the carriage (head) up and down together with the
rail. Others rotate the cam in the carriage by way of a coupling on the
main unit side to move the head up and down.
Multisensor A sensor that measures the head and paper distance, detects the leading
edge, width and other aspects of paper, measures the density of
adjustment print patterns and so on.
Platen fan Sucks paper to keep it from elevated.
Head management sensor A sensor that detects non-discharging nozzles for non-discharging nozzle
backup.
LF motor Feeds out paper precisely (in the micron order) according to the number
of print passes for each scan of the carriage.
Printhead Single six-color 1-inch head (consumable part)
Spur A roller used to feed the trailing edge of cut sheet. Serrated to avoid
catching ink. Mounted on the iPF5000 Series only.
Purge unit A head recovering unit that sucks the head to restore clogged nozzles and
to release the air, and that wipes the face with a wiper. It also contains a
lock mechanism that clamps the carriage to the purge.
Maintenance cartridge A cartridge tank (consumable) that stores waste ink ejected from the
purge unit.