Canon Pixma MG3550 Online Manual page 638

(2) Remove the FINE cartridge.
Important
Handle the FINE cartridge carefully to avoid staining of clothing or the surrounding area.
Discard the empty FINE cartridge according to the local laws and regulations regarding disposal of
consumables.
4. Prepare a new FINE cartridge.
(1) Take a new FINE cartridge out of its package and remove the protective tape
91
(G) gently.