I bought a HP k5400 and thought I would economise by using a CIS sytem to help keep printing costs down. Two CIS systems later ( thought the first wasn't working) and 6 weeks after buying the printer I am now out of pocket for 3 printheads! Yes the CIS system does not work but clogs up the valves. I am now back to using cartridges and originals at that. Definately not a good move. I thought it was only me but have since learned about others who have had to do the same.

Definately a NO NO!