Image forming apparatus

An image forming apparatus comprising:

• an image forming unit configured to form an image on a recording medium based on an image forming condition;
• an image reader configured to read an image for adjustment of the image forming condition, which is formed on the recording medium;
• and
• a controller configured to:
• control the image forming unit to form images for adjustment;
• control the image reader to read the images for adjustment;
• determine a target data based on a reading result of a first image included in reading results of the images for adjustment;
• adjust the image forming condition, during execution of a job in which the image forming unit forms a plurality of images on a plurality of recording mediums, based on the target data and a reading result of second image included in the reading results of the images for adjustment;
• control the image forming unit to form the first image again during execution of the job, in a case where the image reader fails to read the first image during execution of the job;
• and
• avoid adjust the image forming condition based on the reading result of the second image during execution of the job, in a case where the image reader fails to read the second image during execution of the job.