| 摘要 |
PURPOSE:To exactly prevent a wrong toner from being mixed into a developer in a developing device, by providing a marker on the outside surface of a toner cartridge, and providing a means for reading the marker, and a means for inhibiting its use in case a kind of the toner is not matched with the device, on the device body. CONSTITUTION:A bar-code 3 for showing a kind of a toner which has been contained in a cartridge is printed at a prescribed position on the outside surface of a toner cartridge 4. A reader which can read the bar-code 3 is provided on a device body such as a copying machine, etc. The reader consists of a light source 1 such as an LED, etc., and a sensor 2 such as a phototransistor, etc., for detecting a reflected light of a bar-code 1 which has been irradiated by said light source. A kind of the toner, which has been read is compared with information for showing a kind of the toner which is used for its machine stored in a CPU, and when they are different from each other, it is warned by an alarm means. |
