Patent ID: 8511678

Claim:
An image forming apparatus comprising an image reading apparatus, an image forming unit that is arranged below the image reading apparatus, and a sheet stacker that is arranged between the image reading apparatus and the image forming unit, wherein the sheet stacker comprises: a sheet output tray configured to receive a sheet and stack the sheet, the sheet output tray including a non-movable tray and a movable tray, the non-movable tray being disposed downstream of the movable tray; and a downstream portion of the movable tray being pivotably fixed at a pivot support arranged on the non-movable tray; the non-movable tray having a sheet loading surface, a downstream portion of the sheet loading surface being located at a higher level than an upstream portion of the sheet loading surface, an angle between a sheet loading surface of the movable tray and the sheet loading surface of the non-movable tray is set to an obtuse angle in a non-sheet-loading state.