Patent ID: 7002701

Claim:
An image formation apparatus comprising: an image storage means for storing image information; a read-out means for assigning an image information read-out position of the image storage means to read out the image information; an image transfer unit for transferring an image onto a paper in accordance with the image information read out by the read-out means from the image storage means; and an accuracy information storage means for storing unit curvature correction information and/or dot-pitch correction information, wherein said curvature correction information is obtained based on the measurement result of the position curvature information in the scanning direction of an exposure portion of the image transfer unit, and said dot-pitch correction information is obtained by measuring the dot-pitch of the exposure portion; wherein the read-out means has a means for reading out the position accuracy information from the accuracy information storage means and correcting the image information read-out position by the position accuracy information.