To clean a color laser printer, you need to purchase a special cleaning sheet. It can be bought in most stores selling office supplies. These sheets of paper are covered with cleaning agents, which allows you to use them to remove toner from print heads and drums to clean them thoroughly. Some people prefer cleaning them manually using some alcohol, canned air, or vacuums. Make sure to read the manual that comes with your printer. It will allow you to understand how you can disassemble it and clean it without damaging its parts.