Media adjustment guides for image forming apparatus

A media supply receptacle (10) includes: a) a horizontally inclined base plate (18); b) a movable, slotted input tray (14) generally parallel to and above the base plate (18), with a generally flat upper surface for supporting a stack of sheet media; c) evenly spaced, parallel control rod slots (15) in the input tray; and d) at least one media adjustment guide member (11), which includes identical, evenly spaced control rods (12). The control rods are vertically positioned with respect to the horizontally aligned input tray (14), and at least one passes through a corresponding control rod slot (15). Each control rod (12) has a lower end affixed to the base plate, and an opposite, upper end affixed to a guide cap. Each guide cap (13) extends across the upper ends of the control rods (12) in the guide member (11) and over the input tray. The receptacle (10) is adapted for feeding the stack of sheet media to the adjacent image forming or rendering apparatus, a sheet at a time.