Touch screen user interface with expanding touch locations for a reprographic machine

A touch sensitive user interface (52) of the type having a display screen (62) for displaying an image; control logic responsive to the touch sensitive user interface for determining the contact position of a probe, such as a finger, thereon, a display menu of operating features, represented by a plurality of images (301 to 304) on the display screen, so that a user may make touch selections on the images corresponding to operating features desired; a system controller (54) for identifying a contact zone (310 to 313) of a predetermined size with respect to the display screen, the control logic actuating the feature within the system represented by a displayed image in response to user touch within a corresponding contact zone, the system controller enlarging the contact zone of a selected feature upon selection thereof, to a size accommodating a probe tip, without overlapping on adjacent areas and upon completion of option selection, returning the expanded contact areas (310′ to 313′) to said predetermined size.