Information processing apparatus and image forming apparatus with adaptive diagnostic image layout based on recording medium size

An image forming apparatus comprising:

• an image former forming an image on a recording medium;
• and
• a processor configured to:
• acquire a diagnostic image used to diagnose the image forming apparatus;
• and
• if the diagnostic image is formed on a large-sized recording medium of a specific size larger than the diagnostic image, form a plurality of the diagnostic images on the large-sized recording medium,
• wherein if the diagnostic images used to diagnose the image forming apparatus are to be formed on small-sized recording media, each small-sized recording medium smaller than the large-sized recording medium, the diagnostic images are respectively formed on the small-sized recording media different from each other in size, and
• wherein the processor is configured to, if a plurality of the diagnostic images are to be formed on the large-sized recording medium, form the diagnostic images on the large-sized recording medium such that the diagnostic images intended to be respectively formed on the small-sized recording media different from each other in size are formed together on the large-sized recording medium.