Canon BJC 3000 Reference Manual page 84

BJ Cartridges You Can Use with the Printer
Black BJ Cartridge BC-30
This BJ Cartridge contains pigment black ink which takes longer to dry than
general dye ink, but produces extremely sharp, water-resistant text and
graphics. This is intended for printing monochrome documents.
The Black BJ Cartridge BC-30 is composed of the print head and one
replaceable ink tank, the Ink Tank BCI-3BK.
When this BJ Cartridge runs out of black ink, only the ink tank needs to be
replaced.
Replacing the Ink Tanks
Using the BJ Cartridges 84