Making double sided inkjet prints can be quite difficult. Here are some tips to make the process a little smoother.
a smaller inkjet printer like the Epson SureColor P800 or smaller to do this
successfully - the suction systems on the large format roll printers are
too strong and cause significant abrasion to the back side of papers.
plenty of time for the whole print run - it's best to leave your prints
for at least 24 hours and ideally some days before printing the second
After printing the first side, coat that side in Hahnemuhle Protective Spray - this provides good protection against
marks when printing the reverse side.
Print the lightest image side first - and light scratch marks from rollers will be much more visible in dark prints.
your print process with cheap plain paper first and keep good notes on
paper loading orientation as it's easy to get confused with this!