| 摘要 |
PURPOSE:To always keep excellent copy quality without futile output by comparing an original image with a copy image. CONSTITUTION:This copying machine is constituted of an original image reading part 1 reading the image of a copied original, an original image storage part 2 storing the read original image, a printing part 3 printing the original image on a copying paper, a copy image reading part 4 reading the image printed on the copying paper, a copy image storage part 5 storing the read copy image, an image comparing part 6 comparing the original image with the copy image and a state display part 7 informing an operator that a toner exchange period comes, when it is judged that the copy quality is deteriorated as the result of the comparison. |
