Conveyance apparatus for a continuous form having sprocket holes on both sides thereof provided in a high-speed printing system, comprised of a printing machine and an after-treatment machine, including: a constant-speed conveyance roller for feeding the continuous form to the printer; a pair of ejection rollers located downstream of the constant-speed conveyance roller for conveying and ejecting the continuous form, under tension, by rotating a little faster than the constant-speed conveyance roller; a pair of drawing rollers provided at the entrance to the after-treatment machine for pulling the continuous form therein injected by the printing machine; an end sensor for outputting an end signal when a disengagement between the last sprocket hole and the constant-speed conveyance roller is detected; and a controller. The controller in the first aspect changes the peripheral speed of the ejection rollers to lower than that of the constant-speed conveyance roller when the end signal is received from the end sensor. The controller in the second aspect stops supplying the power to a driver of the ejection rollers, a predetermined time after the end signal is received from the end sensor. The controller in the third aspect changes the peripheral speed of the drawing rollers to faster than that of the ejection rollers to provide tension to the continuous form when the end signal is received from the end sensor. As a result, the continuous form is treated smoothly in the after-treatment machine even at the end thereof.