Image forming apparatus performing image forming by superimposing images of at least two colors, image forming system, and color shift correction method

Abstract

An image forming apparatus includes an image forming section, a chart creation section, an input section, and a color shift correction section. The image forming section includes a plurality of image forming units that individually form images of different colors. The chart creation section inputs, to the image forming section, the image data of a chart including first lines containing a reference color and a stepped image located between the first lines and that has second lines containing an adjustment color. The input section receives the input of an adjustment value selected based on a chart formed by the image forming section. In response to the adjustment value, the color shift correction section moves the image forming position of the image forming unit forming the image of the adjustment color with respect to the image forming position of the image forming unit forming the image of the reference color.