An image recording apparatus comprising: recording means including a conveyance unit arranged to convey a recording medium and a recording head arranged to carrying out recording onto a conveyed recording medium;(paragraph 22) cover means supported to be pivotally movable above the recording means and configured to be opened and closed by being pivotally moved relative to the recording means; a stay attached to a bottom surface of the cover means and including an opening portion formed thereon; a rotor attached to the recording means and inserted in the opening portion; a first cam surface (30s-30y) provided on an inner peripheral portion of the opening portion; and a second cam surface (40c-40f) provided on an outer peripheral portion of the rotor, wherein the rotor is arranged to rotate due to abutment of the first cam surface (30s-30y) and the second cam surface (40c-40f) with each other according to the opening or the closing of the cover means, and wherein the cover means is arranged to be held in a first opened state in which the cover means is opened at a first open angle due to meshed engagement of a first cam portion having a protruding shape arranged on the inner peripheral portion of the opening of the stay and a second cam portion in the form of an asymmetric recessed surface arranged on a first short side of the outer peripheral portion of the rotor, after the cover means is transitioned from a closed state in which the cover means is closed to a second opened state in which the cover means is opened at a second open angle larger than the first open angle, the second opened state at this time being a state in which a third cam portion having a protruding shape arranged on the inner peripheral portion of the opening of the stay abuts against a fourth cam portion arranged on a second short side of the outer peripheral portion of the rotor, characterized in that, in a case that the cover means is transitioned from the first opened state to the closed state via the second opened state, the second opened state at this time being a state in which the third cam portion abuts against a fifth cam portion arranged on a long side of the outer peripheral portion of the rotor, a rotation of the rotor brought by the abutment of the third cam portion and the fifth cam portion prevents the first cam portion from being meshed again with the second cam portion until the cover means is transitioned to the closed state. recording means including a conveyance unit arranged to convey a recording medium and a recording head arranged to carrying out recording onto a conveyed recording medium;(paragraph 22) cover means supported to be pivotally movable above the recording means and configured to be opened and closed by being pivotally moved relative to the recording means; a stay attached to a bottom surface of the cover means and including an opening portion formed thereon; a rotor attached to the recording means and inserted in the opening portion; a first cam surface (30s-30y) provided on an inner peripheral portion of the opening portion; and a second cam surface (40c-40f) provided on an outer peripheral portion of the rotor, wherein the rotor is arranged to rotate due to abutment of the first cam surface (30s-30y) and the second cam surface (40c-40f) with each other according to the opening or the closing of the cover means, and wherein the cover means is arranged to be held in a first opened state in which the cover means is opened at a first open angle due to meshed engagement of a first cam portion having a protruding shape arranged on the inner peripheral portion of the opening of the stay and a second cam portion in the form of an asymmetric recessed surface arranged on a first short side of the outer peripheral portion of the rotor, after the cover means is transitioned from a closed state in which the cover means is closed to a second opened state in which the cover means is opened at a second open angle larger than the first open angle, the second opened state at this time being a state in which a third cam portion having a protruding shape arranged on the inner peripheral portion of the opening of the stay abuts against a fourth cam portion arranged on a second short side of the outer peripheral portion of the rotor, characterized in that, in a case that the cover means is transitioned from the first opened state to the closed state via the second opened state, the second opened state at this time being a state in which the third cam portion abuts against a fifth cam portion arranged on a long side of the outer peripheral portion of the rotor, a rotation of the rotor brought by the abutment of the third cam portion and the fifth cam portion prevents the first cam portion from being meshed again with the second cam portion until the cover means is transitioned to the closed state.