Charging device, image forming apparatus, control method of charging device, control program, computer-readable storage medium recording control program

[0032]The following specifically explains one embodiment of a charging device of the present invention and an image forming apparatus that includes the charging device, with reference to FIGS. 1 through 9. Note that the following embodiment is one example exemplifying the present invention, and by no means limits a technical scope of the present invention.

[0033]First, the following explains a whole arrangement of the image forming apparatus according to the present embodiment. FIG. 2 is a cross sectional view schematically illustrating an arrangement of an image forming apparatus 100 according to the present embodiment. This image forming apparatus 100 is a tandem type printer employing an intermediate transfer system, and can form a full color image.

[0034]As illustrated in FIG. 2, the image forming apparatus 100 includes visible image forming units 50a to 50d for four colors (C, M, Y, and K), a transfer unit 40, and a fixing device 14.

[0035]The transfer unit 40 includes an intermediat