We have several Ricoh multifunction devices (with PostScript) networked with print queues set up on Windows 2003 32-bit server. All PCs are able to print to devices without issue. Macs OSX 5 and OSX 6 are unable to print to the devices. We've tried joining computers to domain, installing AdmitMac, straight IP printing.
You're able to add the printer via IP, Line Printer Daemon- LPD protocol, and printer shows up as an available printer. The local queue displays settings from the device in the Location field, too, so there is communication between the Mac and the printer. If you attempt printing to the device, the device prints out garbage or nothing at all. We've tried using the Generic PS drivers and latest OSX.x PS drivers specific to the device - no difference.
We've also noticed that the printer icon on the Mac changes from a generic printer to a device-specific icon when printing works as it does with HP printers. The printer icon for the Ricoh MFDs remains the generic printer icon.