8-5Maintenance8■ Storing Partially Used CartridgesIf you remove a cartridge from the machine, store the cartridge as described below.Place the cartridge in its protective bag so that the side with the written instructions faces up. Then,place the cartridge into its shipping box. Be sure to securely close the lid of the shipping box.If you do not have the protective bag or shipping box for the cartridge, store the cartridge in a darklocation.■ Recycling Used CartridgesIn order to make effective use of the earth’s natural resources and protect the environment, we urgeyou to recycle used cartridges by returning them to the place of purchase.Replacing the CartridgeThis section describes how to remove the used cartridge and replace it with a new one. Beforereplacing the cartridge, be sure to read the section "When to Replace the Cartridge," on p. 8-2.NOTEBefore handling the cartridge, see the precautions in "Handling and Storing the Cartridge," on p. 8-3.1 Open the front cover.2 Remove the cartridge from the machine.