Testing new printers of the make RISO and it seems the file is sent but nothing is being actually printed.
We see this message in the ESFLOG:
ESF931 File nnn printed on printer PRT1 3 pages (Active= 1 / Elapse= 32 secs)
Release : 12.0 14.0
Component : CA Spool
The driver LPR worked with this RISO printer (TCPDRIV=LPR)