Abstract: An imprinting mechanism includes a sheet tray and comprises a housing and a spring bias device within the housing. A sheet stack support is positioned within the housing and in contact with the spring bias, the spring bias forcing the sheet stack support towards a first position, the sheet stack support being forced (against the spring bias) to a second position when a stack of sheets is positioned thereon. A pivotally mounted indicator is positioned within the housing and includes first and second arm portions, a first portion being in contact with a surface of the sheet stack support and a second portion movable between visible and invisible locations, as viewed by a user. The first portion is movable about the pivot to position the second portion to the visible location when a predetermined size stack of sheets remain in the sheet stack support.