There was a question about why anyone would want to remove the core from the take-up after printing instead of unwinding it:
Depending on the type of job; decals for example- print the entire roll and then remove it and load it directly onto a laminator or load it onto a plotter. Even though the prints are reverse wound onto a take-up, a good plotter (Summa) can plot all the jobs in reverse.
Those are the 2 reasons I personally like to let the printer's take-up roll the entire run onto a core and then remove the core.