Solution : https://service.sap.com/sap/support/notes/44009 (SAP Service marketplace login required)
Key words :
/3 profile parameter rspo/host_spool/print, tcp/ip print server parallel, \ \ \system\currentcontrolset\services\lpdsvc\parameters\ \ 3, tcp/ip print server, transaction spad -> tab page, spool work process runs, edit menu choose add, berkeley line printer daemon, line printer daemons sapsprint, longer print text files