A printing apparatus comprising: a printhead configured to print an image by discharging ink to a first surface as a front surface of a printing sheet and a second surface as a back surface of the printing sheet; an intermediate roller configured to feed the printing sheet towards a downstream side of a first sheet conveyance direction; a conveyance roller arranged upstream of said printhead in the first sheet conveyance direction of a printing sheet when executing a printing operation, wherein said conveyance roller is configured to convey a printing sheet fed by the intermediate roller in the first sheet conveyance direction by rotating in a first direction and to convey the printing sheet in a second sheet conveyance direction opposite to the first sheet conveyance direction by rotating in a second direction opposite to the first direction; a control unit configured to control conveying of the printing sheet in the second sheet conveyance direction at the time of a reversing operation from the conveyance roller back to the conveyance roller via a first flapper , reversing conveyance guides , a reversing re-feed path guide , a second flapper and the intermediate roller ; wherein a reversing roller is arranged in a path comprising the reversing conveyance guides , and is configured to reverse the printing sheet conveyed by said conveyance roller rotating in the second direction and convey the printing sheet to said conveyance roller ; and the control unit is configured to drive said reversing roller so as to decrease a driving speed of said reversing roller in a case where the ink discharge amount on the first surface of the printing sheet is equal to or larger than a threshold, as compared to a driving speed of said reversing roller in a case where the ink discharge amount is smaller than the threshold. a printhead configured to print an image by discharging ink to a first surface as a front surface of a printing sheet and a second surface as a back surface of the printing sheet; an intermediate roller configured to feed the printing sheet towards a downstream side of a first sheet conveyance direction; a conveyance roller arranged upstream of said printhead in the first sheet conveyance direction of a printing sheet when executing a printing operation, wherein said conveyance roller is configured to convey a printing sheet fed by the intermediate roller in the first sheet conveyance direction by rotating in a first direction and to convey the printing sheet in a second sheet conveyance direction opposite to the first sheet conveyance direction by rotating in a second direction opposite to the first direction; a control unit configured to control conveying of the printing sheet in the second sheet conveyance direction at the time of a reversing operation from the conveyance roller back to the conveyance roller via a first flapper , reversing conveyance guides , a reversing re-feed path guide , a second flapper and the intermediate roller ; wherein a reversing roller is arranged in a path comprising the reversing conveyance guides , and is configured to reverse the printing sheet conveyed by said conveyance roller rotating in the second direction and convey the printing sheet to said conveyance roller ; and the control unit is configured to drive said reversing roller so as to decrease a driving speed of said reversing roller in a case where the ink discharge amount on the first surface of the printing sheet is equal to or larger than a threshold, as compared to a driving speed of said reversing roller in a case where the ink discharge amount is smaller than the threshold. <EOS>