| 摘要 |
PURPOSE:To eliminate waste of a copying material and to facilitate removal or solution of trouble, by delaying time of indication of warning to a time somewhat after actual detection of an accident requiring warning with a sensor in the cource of an image formation process. CONSTITUTION:An image formation apparatus is arranged so that even if deficiency of toner is detected in a developing device 17 with a sensor S3 in the cource of operation of a copying process, an indication lamp 82 is not turned on at that time, such a state being maintained till copying of all the set number is finished, and the lamp 82 is lighted at the point when it is detected with a sensor S9 that the last copying paper is brought out on a tray 26, thus permitting waste of the copying papers and trouble for removing them to be avoided by absense of them in the copying route, when the lamp 82 is lighted, a front door is opened, and the toner is supplied, besides the copying machine is shifted to a suspension state of operation. |
