DRIVING CONTROLLER AND AUTOMATIC ORIGINAL CARRIER SYSTEM USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a driving controller which can realize the prevention of a step-out and the reduction of power consumption of a stepping motor, and also provide an automatic original carrier system which can position a manuscript with accuracy while reducing the power consumption. SOLUTION: This driving controller comprises the stepping motor which is driven by switching a specified exciting current to each phase based on a timing signal of a specified frequency and a current controller for changing the specified exciting current. It also includes a frequency controller for changing the specifies frequency of the timing signal based on a change of the exciting current.