They do have a separate cartridge which must be loaded each time, and when using color, the black is not quite as black as it could be. We are still keeping some Imagewriters around, especially in the lab, because printing is faster than with the inkjets. Print Shop Deluxe banners better with the Imagewriters. HP is also now making a 660 model that is a little more expensive, I think, but is a good model. My philosophy is to avoid them at all costs for as long as possible.
Colour printing is delightful but frighteningly costly.
I reckon you easily add thousands to your reprographics bills with very little increase in learning. As I understand it we will have a laser printer, color printer, ink jet and dot matrix. All the computers in the school can access any of these four. We are in the beginning stages of determining which printer will be used for which activities and realize that guidelines have to be set for teacher and student use. Yeah, we have lots of cards for birthdays being printed, but we also have apology cards being printed too.