The print scp is a sample that shows how fo-dicom implements the DICOM-communication of a Print SCP.
So what the sample does ist, that it creates a DICOM server and processes all the print associations that any other DICOM node might send (for example a viewing-workstation or a modality,...). Then the sample writes the rendered bitmap to file and prints it to the default windows printer.
The part of fo-dicom is to do the DICOM-communication. What you then do with the received rendered image is up to you.
I am not sure if you can directly access the api of film printers like agfa, konica etc. At least I have never seen that before. usually these machines do have a DICOM-Print interface, so you can print there using DICOM, so you would need a Print SCU application to print there.
But if these machines do offer windows printer drivers and you do have these drivers, then you should be able to print there from within your print SCP sample.