Pebe, I did read your post. You washed a nozzle check print. I don't know what ink is used in printing the black boxes in the nozzle check print. It did not prove that the ink in your PGI5 is not waterproof. It may look black but it could be printed with equal amount of CMY ink. But if you do what I suggested in post #19 the black text will be by the ink in the PGI5 cartridge. If you wash it you will prove it with your own eyes. Tell me if I am wrong. But don't say I am wrong if you wash a nozzle check print. I am only trying to help. If it is so difficult for you to print a sheet of black text you don't have to do it. But if you do it you will be surprised. Use a sheet of plain paper and set your printer to plain paper and in standard quality. Print the largest text in bode mode if you wish. You will see that it will not run. I am talking about Canon OEM ink in PGI5. If you refill your PGI5 then it depends on if the ink you refill is 100% pigmented ink.