1. An image formation apparatus comprising: an image formation unit that forms an image on a transfer medium based on a job; and a control unit that controls the image formation unit, the control unit having an image quality verification/adjustment 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 to carry out an image quality adjustment of the image formation unit such that the image quality of the image is within an allowable range of the predetermined image quality standard, in a case where the image quality of the scanned image is not within the allowable range of the predetermined image quality standard, the control unit having a carrying-out procedure to carry out the image quality verification/adjustment function before execution of the job as necessary, comparing a required image quality to be required 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 by the image quality verification/adjustment function.