| CPC G03G 15/55 (2013.01) | 10 Claims |

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1. An image forming apparatus comprising:
a plurality of image forming units configured to form images to be transferred to a recording medium; and
a processor configured to cause
a diagnostic image formed by only a diagnosis target image forming unit to be transferred to a recording medium, wherein the diagnosis target image forming unit is only one of the plurality of image forming units that is a target for diagnosis, and
an information display image formed by another one of the plurality of image forming units to be transferred to the recording medium, wherein the information display image is an image representing information with at least one of a barcode and text.
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