| 摘要 |
Certain embodiment provide an image forming apparatus including an image forming unit configured to form, if a toner cartridge used in single-color printing is a non-genuine product or if at least one of plural toner cartridges used in plural-color printing is a non-genuine product and the plural-color printing is selected, a copy image in an image quality priority mode for executing, at a frequency higher than that in a normal mode, image quality maintenance control for maintaining the copy image in desired image quality. |
