Video showing how to refill Lexmark 80 & 85 ink carts. 1. Cut around the edge of the lid 2. Inject the correct ink slowly(7ml) into each chamber 3. Re-attach the lid with tape 4. Leave the cart to stand for 2 hours http://www.disc-info.com/downloads/jr-refill/lexmark/jr-lex-12a1985.pdf