| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device capable of easily predicting toner consumption amount without being influenced by developing bias, exposure intensity, environment, the operating time of a developing device and the operating time of a photoreceptor drum, and easily calculating toner supply amount without being influenced by the environment, the dispersion of the characteristics of the device and a toner cartridge and toner remaining amount in the toner cartridge. SOLUTION: This device is provided with an arithmetic processing part 28 controlling the whole. In the processing part 28, exposing time in accordance with an exposure pattern and the set value of toner density are set as a 1st coefficient, the coefficient of toner consumption concerning any or all of a developing device, the photoreceptor drum, an electrifier, consumable interchangeable parts and temperature and humidity is set as a 2nd coefficient, and the coefficient of toner supply concerning any or all of the toner cartridge and the temperature and the humidity is set as a 3rd coefficient. |
