Display device for displaying setup screen with screen navigation path

A display device comprising:

• a display unit that includes a first region and a second region, the display unit displaying, in the first region, one of a plurality of screen images managed hierarchically, the plurality of screen images including a first screen image and a second screen image;
• a storing unit configured to store a plurality of character strings corresponding to the plurality of screen images;
• a navigation string generating unit including:
• a specifying unit configured to specify a setting value selected for at least the second screen image that was navigated through to arrive at the first screen image currently displayed in the first region;
• and
• a generating unit configured to generate a navigation string comprising at least the character string corresponding to the second screen image and a setting data representing the setting value corresponding to the second screen image;
• a display control unit configured to control the display unit to display the navigation string in the second region;
• a first transition unit configured to change the first screen image displayed in the first region to a third screen image of a lower hierarchical level than the first screen image when a user selects the third screen image belonging to a first group;
• and
• a second transition unit configured to control the display unit to sequentially display, in the first region, a plurality of screen images belonging to a second group in order of hierarchical level by a wizard format for guiding the user in selecting setting values according to a fixed procedure,
• wherein the navigation string includes:
• a first navigation string including at least one of the character strings corresponding to a screen image belonging to the first group;
• a second navigation string including at least one of the character strings corresponding to the second screen image belonging to the second group and the setting data before guiding the user in the selecting setting value;
• and
• a third navigation string including another at least one of character strings corresponding to one of the plurality of screen images belonging to the second group and the setting data, the one screen image obtained after guiding the user in selecting setting values,
• wherein the display control unit controls the display unit such that the first navigation string is displayed in a first line and the second navigation string and the third navigation string are displayed in a second line different from the first line.