Ours is offset/litho w/2 pages per plate/cylinder and then 2 opposing cylinders per unit which then yields 4 pages per unit. This also requires 4 complete units just to do 4 pages of 4 color process. Most of our work is at least 2 pgs of 4 color, which still requires all 4 of our 4 color units, then between 2 to 10 additional pages of black half tones and text.

My only experience w/polymer plates was on a corrugated flexo press. They used a mylar backing plate and were simply placed in position then taped to the cylinders. But, with registration in 1/16ths of an inch realm made then pretty much unusable for doin 4 color process work. Dot-for-dot registration just waddn gonna happen.

What kinda work were they runnin on that press? Long runs, short runs? Was the press converted from an offset press or purpose built?

I always think of letterpress more as a flat format run with usually metal type or dies. Though both letterpress and flexo presses both run without water systems as required in offset, flexo relates to the flexible nature of the dies/plates required since they are mounted on round cylinders.