"He who marches out of step hears another drum." ~ Ken Kesey
Toby,Regarding head life span, we use top quality, industrial Ricoh GEN 4 print heads. These are designed for long, trouble free life, but heads are expendable components, much like spark plugs, or brake pads.The life of the heads in normal operation should be 1 to 3 years. This can vary based upon a multitude of things, including level of usage, environment, maintenance, etc.With an average head life of approximately two years, and an average work year being comprised of 262 days, the cost of replacement heads would add aproximatly $6.00 per day to the cost of ownership of the i-Image. I think that if you look at the additional cost of the heads versus material savings, and increased efficiency, there is a substantial ROI on your i-Image investment.If you have any additional questions, or suggestions please let me know.Hello Geoff!Geoff BaxterDirector, Digital Products DivisionThe M&R Companies