Image forming apparatus and non-transitory computer readable medium

An image forming apparatus comprising:

• at least one hardware processor configured to implement:
• controlling output of a plurality of types of charts and reading of images of the plurality of types of charts;
• and
• performing a plurality of types of processes in a predetermined order in accordance with the images of the charts and original images used to output the charts, each of the plurality of processes being at least one of diagnosis and adjustment,
• wherein the charts include a diagnostic chart for a spot and/or a streak and a diagnostic chart for transfer, and, after the at least one hardware processor performs a first diagnosis based on the diagnostic chart for a spot and/or a streak, the at least one hardware processor performs a second diagnosis based on the diagnostic chart for transfer,
• wherein the charts further include a density non-uniformity adjustment chart and a gradation adjustment chart, and the at least one hardware processor is further configured to implement:
• performing, in a following sequence, the first diagnosis based on the diagnostic chart for a spot and/or a streak, the second diagnosis based on the diagnostic chart for transfer, a density non-uniformity adjustment based on the density non-uniformity adjustment chart, and a gradation adjustment based on the gradation adjustment chart.