I n t r o d u c t i o n1-4 ❖ D o c u P r i n t 4 5 1 2 / 4 5 1 2 N U s e r G u i d eSpecial Features Several features have been designed into the DocuPrint 4512 to enhanceyour printing environment. Using the Control Panel menu system, youcan tailor printer settings to match your printing requirements.See Chapter 3: The Control Panel for more information about theControl Panel and its menu system.Duplex Printing The DocuPrint 4512 can print two-sided documents. Duplex printing isas easy as printing a one-sided job.MultiplePaper Trays andIncreased PaperHandlingThe DocuPrint 4512 offers two paper trays, each of which can hold upto 250 sheets of paper. When the paper source is set to AUTO SELECT(the factory default), the printer automatically senses the paper size andfeeds paper from the appropriate tray according to print instructionsfrom the application software. If both trays contain the same size ofpaper, the printer gives priority to the lower tray and feeds from therefirst, effectively giving you a 500-sheet capacity.You can also install the optional 1000-sheet High Capacity Feeder tofurther extend your printing capacity.For more information on using the paper trays, see the section “PaperTray Loading” (page 2-5) in Chapter 2: Paper Handling.AutomaticEmulation/InputSwitchingWhen you have installed the PostScript option, the printer can processboth PCL and PostScript jobs. When Emulation is set to Auto, theDocuPrint 4512 samples the incoming data stream to determine whichlanguage the print job requires. The DocuPrint 4512 then switches to theproper language for that job.The DocuPrint 4512 can have up to two active ports when you install anoptional interface card (AppleTalk/Serial Interface, Ethernet or TokenRing). The printer automatically switches between input sources,samples the print job, and switches to the appropriate processinglanguage.State Saving When you have installed the PostScript option and are printing bothPostScript and PCL jobs, the printer clears any data in memory when itswitches between PostScript and PCL 5e emulations. However, you can