I often get this question from my customers on why printer manufacturers void their warranty if they use CISS. I often explain it to them that CISS itself will not void their warranty but the use of non standard ink from other manufacturer other than prescribed ink is the cause of the cancellation of their warranty.
But this is not alway the case but in general if you intent to use CISS you should assume that your warrantty is canceled. A lot of people have told you can always remove the your CISS if you want to avail of your printer’s warranty which I know can easily be done with Brother printers but for all other printers manufacturers they will surely know if you were using CISS.
Recently in Asia Epson has started rolling out their version of a consumer grade CISS printers called ink tank printers. The reason for such change in the view was the huge demand for ink and how much money they lost if they don’t adapt and start selling ink at wholesale prices. I do notice Epson printer are only limited in Asia to protect their lucrative sales of ink cartridges in Europe and North America.