IMAGE FORMING APPARATUS AND IMAGE FORMING PROGRAM

摘要

PROBLEM TO BE SOLVED: To further suppress a change in concentration compared to the case where concentration correction is performed regardless of image density.SOLUTION: An image forming apparatus performs concentration correction so that concentration of an image for concentration control read by a concentration sensor 44 becomes predetermined concentration on the basis of a difference between the concentration of the image for concentration control read by the concentration sensor 44 and the predetermined concentration and image density of an image transferred to a body for transfer during a predetermined period in the past.