Patent ID: 7359652
Filing Date: 2008-04-15
Classification: G03G

Abstract:
1. An image forming apparatus having an image forming unit which forms an image using a dark color substance and light color substance with substantially a same hue, comprising: a pattern forming unit configured to form a first pattern on a recording medium using the dark color substance and light color substance with substantially the same hue by supplying first pattern data to the image forming unit; a density detection unit configured to detect a density of the first pattern formed on the recording medium by said pattern forming unit; a correction unit configured to correct conditions for image forming using the dark color substance and light color substance with substantially the same hue in the image forming unit, on the basis of the density of the first pattern detected by said density detection unit and a density of the first pattern data; and a control unit configured to perform control so as to perform correction by said correction unit, in a case where a variation in the density of the first pattern detected by said density detection unit is not less than a predetermined value; wherein said image forming unit forms an image using the light color substance in a case where a density of image data is not more than a predetermined value, and forms an image using the dark color substance in a case where the density of the image data is not less than the predetermined value.