| 摘要 |
A control device includes an acquiring unit acquiring code image data expressing a code image having dots arranged in an array that expresses information; a generating unit extracting the dots from the code image and generating patch image data expressing patch images having the dots orderly arranged in different densities; an image-formation control unit controlling an image forming unit so as to form the patch images based on the patch image data in accordance with a preset image forming condition by using an invisible toner; a measuring unit measuring densities of the patch images; and a changing unit changing the image forming condition if at least one measured density is outside a density range set according to a corresponding dot density based on a correspondence relationship between the measured densities and densities of the dots, so that all of the measured densities are set within the corresponding density ranges. |
