An image forming apparatus includes first and second sheet feed cassettes and the like. When a lift plate and sheets thereon are raised in the first sheet feed cassette, causing a pick-up roller to move upward, an arm member is inclined upward from a holder side toward a lever member side. The lever member is raised by the arm member on a second flat plate portion to be in a horizontal attitude, and a vertical wall faces a vertical wall portion of the first sheet feed cassette across a predetermined gap. As a result, when the first sheet feed cassette is pulled out to a certain extent, the vertical wall of the lever member abuts on the vertical wall portion of the first sheet feed cassette, and a conveyance unit is pulled out together with the first sheet feed cassette.