Patent ID: 8797615

Claim:
An image forming apparatus comprising: an image forming unit configured to form an image on a recording material with a halftone dot area percentage changed to provide a density corresponding to an input signal; a reading unit configured to read a recording material having an image formed by said image forming unit; a determining unit configured to determine first data for correcting a relation between an input signal and a density of the image to be formed by said image forming unit and second data for correcting a relation between an input signal and a halftone dot area percentage corresponding to a density of the image to be formed by image forming unit, on the basis of a reading result of the recording material on which a plurality of images having different densities are formed by said image forming unit; and a correcting unit configured to correct the input signal before being input to said image forming unit, using one of the first data or the second data determined by said determining unit.