Image forming apparatus and non-transitory computer readable medium

A non-transitory computer readable medium storing a program that, if executed, causes a computer to execute image formation processing, the image forming processing comprising:

• determining a correction amount for an image forming condition to adjust image density unevenness corresponding to a rotation cycle of a rotating body, an image forming device being configured to form an image using the rotating body under the image forming condition;
• controlling the image forming device to form on at least one sheet (i) a plurality of test images that are different in correction amount for the image forming condition and (ii) pointing images indicating intervals corresponding to the rotation cycle of the rotating body, in a state where the rotating body is continuously rotated;
• and
• determining the intervals corresponding to the rotation cycle of the rotating body using a signal related to a gap between the rotating body and another body.

An image forming apparatus comprising:

• an image forming means for forming an image on a sheet using a rotating body under a predetermined image forming condition;
• a correction means for correcting the image forming condition to adjust image density unevenness corresponding to a rotation cycle of the rotating body;
• and
• a control means for controlling the image forming means to form on at least one sheet (i) a plurality of test images that are different in correction amount for the image forming condition and (ii) pointing images indicating intervals corresponding to the rotation cycle of the rotating body, in a state where the rotating body is continuously rotated,
• wherein the control means determines the intervals corresponding to the rotation cycle of the rotating body using a signal related to a gap between the rotating body and another body.

An image forming apparatus comprising:

• at least one processor configured to implement:
• a corrector configured to correct image density unevenness corresponding to a rotation cycle of a rotating body of an image forming device;
• and
• a controller configured to control the image forming device to form on at least one sheet (i) a plurality of test images that are different in correction amount and (ii) pointing images indicating intervals corresponding to the rotation cycle of the rotating body when the rotating body is continuously rotated,
• wherein the controller is configured to determine the intervals corresponding to the rotation cycle of the rotating body using a signal related to a gap between the rotating body and another body.