Canon BJ-230 - Manual (Page 50)

To install a new ink cartridge, follow these steps:
1. Make sure the printer is turned off.
2. Open the front cover.
3. Lift the green lock lever on the cartridge holder. Slide the old ink
cartridge out of the holder and dispose of it properly.
4. Take the new ink cartridge out of its protective packaging. Slide
off the orange protective cap from the print head and then remove
the orange tape.
CAUTION: Keep the ink cartridge out of children's reach; the ink
contains isopropyl alcohol 67-63-0.