Patent ID: 6223007
Filing Date: 2001-04-24
Classification: H04N

Abstract:
An image forming apparatus comprising:image forming means for forming an image of an output image density value obtained by correcting an input image density value in accordance with a correction table of input image densities;density detecting means for detecting a density of the formed image;density interpolating means for interpolating the image density detected by the density detecting means; anddensity correcting means for correcting the output image density value by making a comparison between the correction table and an interpolation result of the density interpolating means;wherein the density interpolating means comprises low-density region interpolating means for finding a linear interpolation formula by linearly interpolating a plurality of image densities in a low-density region which were detected above a predetermined level of sensitivity, to interpolate an image density in the low-density region below the predetermined level of sensitivity, with the linear interpolation formula.