Contents of Eco Information
[Eco Info 1]
Indicates the rate of 2-sided print jobs for all print jobs or the rate of page combination for the number of original pages. You can check the ratio of paper saved.
[Eco Info 2]
Indicates the accumulated monthly or hourly time during power-on, standby, power saving, or running. The display mode can be selected from the list or graph format.
in the upper-right of a page, it turns into 
and is registered as a bookmark.