an inkjet won't draw enough serious power to be a problem on a ups, it won't affect runtime much even. Now a [b]laser[b] printer on the other hand, should only be plugged into the "surge only" outlet on your ups, they draw way too much power to heat up their drum and will either shut down your ups for current overdraw, or will suck down the battery very fast if not idle.
I work for the Department of Redundancy Department
