A sheet feed device (27, 28) comprising: a housing having a side; a sheet storing portion configured to store one or more sheet members; a conveyance path formed inside the housing and configured to guide a sheet member conveyed from the sheet storing portion; an outside cover (56, 56R) rotatably supported with a lower end thereof as a fulcrum by the housing, and configured to be positioned at a first closing position to close the side of the housing, and at a first opening position to open the side of the housing; an inside cover disposed more inside of the housing than the outside cover (56, 56R) and rotatably supported with a lower end thereof as a fulcrum by the housing, and configured to be rotationally moved between a second closing position at which to close the conveyance path when the outside cover (56, 56R) is at the first closing position, and a second opening position at which to expose the conveyance path when the outside cover (56, 56R) is at the first opening position; a coupled portion provided on the inside cover and configured to be coupled with the outside cover (56, 56R); a first coupling portion provided on the outside cover (56, 56R) and configured to, when the outside cover (56, 56R) is rotationally moved in an opening direction from the first closing position toward the first opening position, be coupled with the coupled portion and cause the inside cover to be rotationally moved toward the second opening position, and after the inside cover starts to be rotationally moved toward the second opening position, release coupling with the coupled portion; characterized by a second coupling portion provided on the outside cover (56, 56R) and configured to, when the outside cover (56, 56R) is further rotationally moved toward the first opening position after the first coupling portion releases the coupling with the coupled portion, be coupled with the coupled portion and hold the outside cover (56, 56R) at the first opening position, wherein the coupled portion includes a first locking claw bending from a tip of an arm in an axis direction of the fulcrum of the inside cover, the arm projecting from a surface of the inside cover at the second closing position facing the outside cover, and each of the first coupling portion and the second coupling portion includes a second locking claw bending from a tip of an arm in a direction that faces the first locking claw, and configured to be locked to the first locking claw of the coupled portion, the arm projecting from a surface of the outside cover at the first closing position facing the inside cover. a housing having a side; a sheet storing portion configured to store one or more sheet members; a conveyance path formed inside the housing and configured to guide a sheet member conveyed from the sheet storing portion; an outside cover (56, 56R) rotatably supported with a lower end thereof as a fulcrum by the housing, and configured to be positioned at a first closing position to close the side of the housing, and at a first opening position to open the side of the housing; an inside cover disposed more inside of the housing than the outside cover (56, 56R) and rotatably supported with a lower end thereof as a fulcrum by the housing, and configured to be rotationally moved between a second closing position at which to close the conveyance path when the outside cover (56, 56R) is at the first closing position, and a second opening position at which to expose the conveyance path when the outside cover (56, 56R) is at the first opening position; a coupled portion provided on the inside cover and configured to be coupled with the outside cover (56, 56R); a first coupling portion provided on the outside cover (56, 56R) and configured to, when the outside cover (56, 56R) is rotationally moved in an opening direction from the first closing position toward the first opening position, be coupled with the coupled portion and cause the inside cover to be rotationally moved toward the second opening position, and after the inside cover starts to be rotationally moved toward the second opening position, release coupling with the coupled portion; characterized by a second coupling portion provided on the outside cover (56, 56R) and configured to, when the outside cover (56, 56R) is further rotationally moved toward the first opening position after the first coupling portion releases the coupling with the coupled portion, be coupled with the coupled portion and hold the outside cover (56, 56R) at the first opening position, the coupled portion includes a first locking claw bending from a tip of an arm in an axis direction of the fulcrum of the inside cover, the arm projecting from a surface of the inside cover at the second closing position facing the outside cover, and each of the first coupling portion and the second coupling portion includes a second locking claw bending from a tip of an arm in a direction that faces the first locking claw, and configured to be locked to the first locking claw of the coupled portion, the arm projecting from a surface of the outside cover at the first closing position facing the inside cover.