Lexmark C720 User's Guide - Page 199

Changing the Paper Type setting It is important to verify the Paper Type settings are accurate for all the installed paper sources. Refer to the menu settings page you printed. The Paper Type is listed for each of the installed paper sources. Paper Type refers to the type of media loaded in the sources: plain paper, letterhead, envelopes, and transparencies. Since tray 1 can hold different media, you can customize tray 1 Paper Type settings. The printer uses the Paper Type setting to optimize print quality for the media you specified. For example, selecting the Transparency paper type slows the printing process to produce the best transparency possible. The Paper Type setting also affects the printer automatic source selection capability, as well as the tray linking function. For these reasons, it's important to change the setting each time you change the media in the trays. To change a Paper Type setting: 1 From the printer operator panel, press Menu> or or or or