IMAGE FORMING APPARATUS AND AUTO COLOR REGISTRATION METHOD THEREOF

摘要

PURPOSE: An image forming device and a color arrangement method are provided to exactly revise an arrangement error of each color. CONSTITUTION: A driving unit(110) drives a transfer member. A control unit(100) prints a test pattern of each color according to rotary period of the driving unit. The control unit outputs image which arrangement error of each color is revised based on the test pattern. The test pattern of each color is printed on the transfer member or a print media. The driving unit comprises a driving roller which the cut end is circle.