1. An image formation apparatus comprising: an image formation unit that forms an image on a transfer medium based on a job, the job including a required image quality; and a controller that controls the image formation unit, the controller having an image quality verification function to compare, based on a scan result for the image formed by the image formation unit, an image quality of the scanned image and a predetermined image quality standard, and an image quality adjustment function of the image formation unit such that the image quality of the image is within an allowable range of the predetermined image quality standard, the image quality adjustment occurring when the image quality of the scanned image is not within the allowable range of the predetermined image quality standard, and the controller, having a carrying-out procedure to carry out the image quality verification and adjustment functions, comparing the required image quality for the job and the predetermined image quality standard before the carrying-out procedure, and deciding whether the image for the job satisfies the required image quality for the job.