Usually only one side of OHP transparencies can be used for printing. Be sure to load them with the print side down.
The Duplex function cannot be used with OHP transparencies. If the Duplex function is specified, press [1 sided 2 sided:TtoT] to cancel the setting.
When Using the Copy Application
About how to use the application's screen, see "[Copy] Screen", Getting Started.
When Using the Copier (Classic) Application
For details about how to use the Classic Copier function, see Procedure for copying onto OHP Transparencies (classic).