How does printing onto diabond work ?

As I understand it the printing is not done directly onto the diabond but onto paper which is then bonded onto the diabond, but if its just paper how can it be so resilent ?

(Note would be nice if somebody with enough reputation could add diabond as a tag)

How does printing onto aluminium diabond work ?

As I understand it the printing is not done directly onto the aluminium but onto paper which is then bonded onto the aluminium diabond, but if its just paper how can it be so resilient ?

(Note would be nice if somebody with enough reputation could add diabond as a tag)