| 摘要 |
An image forming device in which printing can be conducted by mounting a plurality of toner cartridges of the same color, wherein a toner cartridge that caused degradation of image forming quality can be distinguished among the toner cartridges, is provided. The image forming device, in which a plurality of developing units accommodating toners of the same color are detachably mounted and image forming is conducted by using the toners accommodated, comprises an operation unit which receives a request to output a toner check sheet for inspecting the image forming quality of each of the developing units, a control unit which generates printing data for conducting image forming using respective developing units and instructs image forming based on the printing data, based on the request, and an image forming unit which executes image forming based on the printing data and outputs the toner check sheet, according to the instruction.
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