Workgroup Manager is wonderful, but it doesn’t tell computers which printer drivers to use. Which is annoying when a certain Ricoh printer/copier doesn’t work with the default OSX supplied driver (unless you have postscript fonts installed on the printer) and instead just spews out pages of garbled nonsense.
Thankfully, there is a reasonably easy fix!
2. Follow this page to point your Macs to that custom PPD file using Workgroup Manager.