[header] How to replace an empty ink cartridge [title] Write down the printer brand and model number. [step] You will need to know both in order to find the correct replacement ink cartridges. If you can't find the model number, check the documentation that came with your printer. 
[title] Turn on your printer and open the lid/flap that encloses the cartridges. [step] The cartridges should slide to the center of the printing area.