Patent ID: 8139966

Claim:
An image forming system comprising: an image forming unit that forms an image; a measurement unit that measures densities of a plurality of density patches formed by the image forming unit; a correction unit that performs a density correction for the image forming unit based on the densities of the plurality of density patches measured by the measurement unit; an inhibition unit that determines whether or not the densities of the plurality of the density patches are normal based on at least one of the densities of the plurality of density patches, and, if the densities are determined not to be normal, inhibits the correction unit from performing a density correction based on the densities of the plurality of density patches determined to be not normal; and an adjustment unit that adjusts a density range, wherein: the inhibition unit determines whether or not the densities of the plurality of density patches are normal, based on whether or not the at least one of the densities of the plurality of density patches falls into the density range, and the adjustment unit adjusts the density range such that the density range becomes widened as an operation amount of the image forming unit increases.