| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing device and an image forming device capable of minimizing an increase in cost and the dispersion of property, and moreover reducing possibility of erroneous insertion of a toner cartridge. SOLUTION: The cartridge being packed with image forming particles is provided with an attaching/detaching key being specific to the kind of the cartridge, on an end part of the attaching/detaching direction to a developing device main body, and an acceptable part of the developing device main body is provided with the acceptable key for allowing the attachment of the cartridge only in the case that the attaching/detaching key of the cartridge is fit to the cartridge. |
