| 摘要 |
PROBLEM TO BE SOLVED: To eliminate a disadvantage which, shortly after the replacement of one part, hinders use of the device due to the lives of other parts, by altering the informing manner for replacement according to the remaining life of the detected second part until its end. SOLUTION: The amount Y of remaining yellow toner, the amount M of remaining magenta toner, the amount C of remaining cyan toner, and the amount K of remaining black toner are judged as to whether they are none or not. In the case where usable toner still exists, a process proceeds. However, in the case where the amount of yellow toner is none, for example, the operation of an image forming device is inhibited and Y-replacement display for urging the replacement of an image forming cartridge 1Y is provided. At the same time as the display for the Y replacement, the amount of remaining magenta toner, the amount of remaining cyan toner and the amount of remaining black toner are judged whether they are, for example, less than 20% or not. Further, in the case where the amount of magnet toner is 5% or less, M-replacement display for urging the replacement of an image forming cartridge 1M is provided. Also, in the case where the amount of remaining toner is 20% or less among the colors except the magenta, display for its replacement is provided. |
