The 10K hrs rings a bell from training. I run it at at least 100% power to get max cure most of the time, but I'm nowhere near 10K hrs. I was having a curing issue with some tests and just wanted to rule the bulb out. I did have some ink cured on the bulb cover and cleaned it off.
Pat, yes, the bulbs are a good bit more $. The LED is becoming more popular, even in the large flatbeds, but technically have some limitations, especially with the ink b/c the curing wavelength range is much more narrow.
Thanks for the info.