Canon PIXMA MP280 Series Advanced Manual page 63

Important
If you shake a FINE Cartridge, ink may spill out and stain your hands and the surrounding area.
Handle a FINE Cartridge carefully.
Be careful not to stain your hands and the surrounding area with ink on the removed
protective tape.
Do not reattach the protective tape once you have removed it. Discard it according to the local
laws and regulations regarding disposal of consumables.
Do not touch the electrical contacts or print head nozzles on a FINE Cartridge. The machine
may not print properly if you touch it.
5.
Install the FINE Cartridge.
Put a new FINE Cartridge in the FINE Cartridge Holder.
(1)
The Color FINE Cartridge should be installed into the left slot and the Black FINE Cartridge should be installed
into the right slot.
(2) Close the Ink Cartridge Locking Cover to lock the FINE Cartridge into place.
Push down the Ink Cartridge Locking Cover until it clicks.
(3) Confirm that the Ink Cartridge Locking Cover is closed correctly.
Note
If the Ink Cartridge Locking Cover is not closed correctly, push down the Ink Cartridge
Locking Cover until it clicks.