Canon BJC-3000 - Manual (Page 117)

117 Using the Scanner
Using the White Calibration Sheet
The white calibration sheet provided with the scanner cartridge is used for maintaining the
correct colour balance of scanned images. This white level calibration is required when the
scanner cartridge is used for the first time after purchase, or when the system needs to
update the white level calibration data.
Place the white calibration sheet in the scanning holder, and then load it in
the auto sheet feeder of the printer as shown in the figure.
Using the Scanning Holder
To prevent possible damage to the printer, white level calibration sheet or
scanning holder, always insert the scanning holder into the auto sheet
feeder with its top edge (seamed side) facing down.
Scanning holder
White calibration sheet
Important