An image-forming device comprising: a main casing defining an accommodating space therein, and formed with an access opening communicating the accommodating space with an exterior; an open/close member provided at the main casing to move between an open position for opening the access opening and a closed position for closing the access opening, the open/close member positioned in the open position extending in a predetermined direction; a drawer member configured to support a plurality of process cartridges and movable from an accommodated position to a withdrawn position in the predetermined direction along the open/close member positioned in the open position, the plurality of process cartridges being accommodated in the accommodating space when the drawer member is positioned in the accommodated position, the plurality of process cartridges being exposed from the main casing when the drawer member is positioned in the withdrawn position; and a guiding part being formed at the open/close member over the length to guide the drawer member to the withdrawn position, wherein the guiding part has a first guiding part formed on the open/close member positioned in the open position and extending in the predetermined direction, wherein the open/close member positioned in the open position is positioned beneath the drawer member positioned in the withdrawn position, wherein the drawer member has two edges extending in the predetermined direction, and wherein the open/close member positioned in the open position has a length in the predetermined direction, characterized in that the guiding part further has a pair of second guiding parts to guide the two edges of the drawer member along the predetermined direction to restrict the drawer member from moving in the left and right direction orthogonal to the predetermined direction when the drawer member is moved from the accommodated position to the withdrawn position. a main casing defining an accommodating space therein, and formed with an access opening communicating the accommodating space with an exterior; an open/close member provided at the main casing to move between an open position for opening the access opening and a closed position for closing the access opening, the open/close member positioned in the open position extending in a predetermined direction; a drawer member configured to support a plurality of process cartridges and movable from an accommodated position to a withdrawn position in the predetermined direction along the open/close member positioned in the open position, the plurality of process cartridges being accommodated in the accommodating space when the drawer member is positioned in the accommodated position, the plurality of process cartridges being exposed from the main casing when the drawer member is positioned in the withdrawn position; and a guiding part being formed at the open/close member over the length to guide the drawer member to the withdrawn position, wherein the guiding part has a first guiding part formed on the open/close member positioned in the open position and extending in the predetermined direction, wherein the open/close member positioned in the open position is positioned beneath the drawer member positioned in the withdrawn position, wherein the drawer member has two edges extending in the predetermined direction, and wherein the open/close member positioned in the open position has a length in the predetermined direction, characterized in that the guiding part further has a pair of second guiding parts to guide the two edges of the drawer member along the predetermined direction to restrict the drawer member from moving in the left and right direction orthogonal to the predetermined direction when the drawer member is moved from the accommodated position to the withdrawn position.