An image forming apparatus with a drive motor control

摘要

An image forming apparatus (1) includes at least one image bearing member (2) configured to bear a toner image on a surface thereof, a transferring member (3,103) arranged close to or in contact with the at least one image bearing member (2) and configured to rotate in substantially synchronism with the at least one image bearing member (2) to transfer the toner image born on the at least one image bearing member (2) onto a recording medium (F), at least one first motor (M1,M2) rotating the at least one image bearing member (2), a second motor (DM) rotating the transferring member (3,103), and a control mechanism (30,31,32) configured to control a rotation number of at least one of the at least one first motor (M1,M2) and the second motor (DM) during at least one of rise and fall time periods with a command clock signal and a feedback signal in accordance with a predetermined velocity curve.