Ricoh LPR PortRicoh printers should be able to print with a RAW PORT and port number 9100. These are the default settings for TCP/IP printing.
To get an older Ricoh printer to print in LPR
1.-select LPR2.-type: lp (that's a lower-case L and lower-case P in the QUEUE).
I recently had this with an MPC2000 (MP C2000).
In the end, I switched it back to RAW PORT 9100. It seemed it was a firmware issue.