| 摘要 |
A print apparatus having a photosensitive drum (205) used for color printing. In the apparatus, the number of sheets on which color printing has been performed and the number of sheets on which monochrome printing has been performed are obtained. It is determined (S306, S705) whether or not the lifetime of the photosensitive drum used for color printing has expired based on a threshold value determined based on the ratio between the number of sheets on which color printing has been performed and the number of sheets on which monochrome printing has been performed and the sum of the number of sheets on which the color printing has been performed and the number of sheets on which the monochrome printing has been performed. |
