A sheet feeding device including: a sheet feeding roller for sending
sheets out one-by-one; a sheet stacking section in which a plurality of
sheets can be stacked, and which pushes a sheet against the sheet feeding
roller; an upper guide member able to move between a guiding position at
which, at a time of double-sided printing, the upper guide member
re-feeds to the image forming section an inverted sheet which is sent-in
by a sheet re-feeding section, and a withdrawn position, at which sheet
feeding of the sheet stacking section is possible; and a lower guide
member which is rotatable and which abuts leading ends of sheets stacked
in the sheet stacking section, wherein a guide path, which guides a sheet
which is re-fed at the time of double-sided printing, is formed due to
the upper guide member and the lower guide member rotating
interlockingly.