A sheet supply apparatus for supplying stacked sheets includes a standard sheet
tray provided with a standard side guide that regulates a position in the width
direction of the stacked sheet, and an extension sheet tray extendably disposed
upstream of the standard sheet tray in a sheet feeding direction, wherein the extension
sheet tray has an auxiliary side guide that regulates a position in the width direction
of a sheet feeding direction upstream portion of a long sheet. A sheet handling
apparatus using the sheet supply apparatus.
