Lexmark CS963
Load an original document into the ADF tray or on the scanner glass.
From the control panel, navigate to Copy > More Settings > Separator Sheets.
Enable the menu, and then select a setting.
Copy the document.
Set the printer to insert blank separator sheets when printing multiple copies.
431.x6, 426.x5, 420.x5, or 435.x6 error codes when using the 500-sheet staple finisher