What happens when you click on print.
Afterwards you can see the created spool in Transaction SP02 and there you see something similar
Here you can see what exact happens or even not happening with your spool.
First of all you have to see what Status is set.
The different status are explained here:
and more detailed here:
and if you do not know how to interpret this status here you have to contact your basis-administrator or even the first level support and these guys will know how to help you.
~Florian
PS: By double clicking at the status itself a popup appears and displays more detailed information