| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor rotational speed control device which prevents an image quality deterioration such as color slippage, etc., by suppressing the uneven pitch correction of an image and in which a motor rotational speed correction means is constructed at low cost without increasing the size of the device. SOLUTION: An auxiliary member means having a rotational inertia function to such an extent of not increasing the size is integrally formed on a photoreceptor drum is constituted. The control means interrupts correction while moving a pattern disconnected part having few amounts of distances being a joint where the motor rotational speed cannot be corrected, suppresses the rotational unevenness of the photoreceptor drum by a speed error suppressing effect based on the inertia function, and corrects a speed error during a major portion of movement. The motor rotational speed control device has the control means which simplified in such a manner at a low cost, and a motor rotational speed correction means which corrects a motor rotational speed to converge and correct the rotational unevenness of the photoreceptor drum. |
