Hi all
The borders in all sheet on D*X*P has a exact dimensions like a paper sheet, example... Letter pcb.doc has 11.00 x 8.5 inches in border lines, and when you set it in printer setup to scale 1.00 it no fit, and d*x*p modified it making multiple sheet to complete the job, because any printer laser or inject need some margin to print, you need to modified the borders in the prefered sheet you are using or simple delete the borders and put some any mark like x or circle for use it like "registers" when you use 2 side pcb look in the tutorial that I upload before. (only necesary in pcb sheet template).
mcmc