Printing on Card Stock or Matte Board
You can use the manual feed slot in the back of the printer to print on white card stock or matte board up to 1.3 mm (0.051 inch or 51 mil) thick, in the following sizes: letter, legal, or A4 size.
Before you start, remove the paper support. Then turn the printer on. (The printer must be on to load card stock correctly.)
1.Push in the output tray extension, but leave the tray open.
2.Set the paper thickness lever to the 
position. The 
paper light begins flashing rapidly.
3. Slide the edge guide to the right to make room for the card stock.
Printing on CDs and Special Media 69