A sheet storage cassette includes: a case provided with a storage portion;
a stacking plate on which a sheet is placed; and a lifting unit that
lifts the stacking plate. The lifting unit has: a driving gear that
communicates with an output gear of the device main body in a state where
the sheet storage cassette is received in the device main body, is
rotated by driving force transmitted from the output gear, and is
provided with an engaged part; a swing portion that has an engaging part
engaged with the engaged part, and lifts the stacking plate by a rotation
of the driving gear; and a reverse rotation allowing unit that allows the
driving gear to rotate in an opposite direction to a direction of lifting
the stacking plate when inserting the sheet storage cassette into the
device main body.