A latching mechanism includes a latch provided to a first unit, provided with a first engaging portion at its tip, and is rotatable about a rotation shaft from a first rotation position to a second rotation position, a shaft support provided to the first unit, rotatably supporting the rotation shaft, and is movable between a first position and a second position, a biasing portion provided to the first unit, and biasing the shaft support in a direction from the first position to the second position, and a second engaging portion provided to a second unit, and is engageable with the first engaging portion. The first and second engaging portions engage when the second unit is closed with respect to the first unit, the shaft support lies at the second position, and the latch lies at the second rotation position.