| 摘要 |
PURPOSE:To suppress the deterioration of the copying efficiency and to prevent the illegal copying operations by carrying out the deciding control of a special original deciding means only when the color adjusting frequency is larger than a prescribed level. CONSTITUTION:A scanner unit 101 is provided to read the originals together with an image processing unit 102 which inputs the image data read by the unit 101 and carries out the shading correction, the gamma correction, the gradation processing, etc., a printer unit 103 which outputs the image data processed by the unit 102, an operation display part 104 which sets the number of copy sheets and inputs the color adjustment, a special original deciding unit 105 which inputs the image data through the unit 101 and decides whether the originals are identical with such special originals as the paper money, the securities, etc., or not and a main control part 106 which controls each part. Then the deciding control of the unit 105 is carried out only when the adjusting frequency of the delicate color balance exceeds a prescribed level. |
