| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus with high productivity that reduces image density defect. <P>SOLUTION: The image forming apparatus includes a density sensor for measuring density of an image formed on an image carrier, and a control unit for adjusting the density of the image using the density value measured by the density sensor. The control unit causes the image carrier to form a plurality of patch images during a preparation period for enabling image formation to acquire an upper limit value for density correction on the basis of the measured density value of the patch images, and causes the image carrier to form one patch image between print images during image formation to acquire a temporary density correction value for density correction on the basis of the measured density value of the one patch image. When the temporary density correction value is smaller than the upper limit value, the density of the image is adjusted on the basis of the temporary density correction value. When the temporary density correction value is equal to or larger than the upper limit value, the density of the image is adjusted on the basis of the upper limit value. <P>COPYRIGHT: (C)2012,JPO&INPIT |
