Patent ID: 7440706

Claim:
An image formation apparatus for forming images based on input image data, said apparatus comprising: an automatic adjustment portion adapted to perform automatic adjustment of said image formation apparatus for each of a plurality of adjustment items; a counting portion adapted to count the number of image formation pages from a last automatic adjustment, for each automatic adjustment item which said automatic adjustment portion performs; a control portion adapted to effect automatic adjustment by an automatic adjustment portion, in response to the number of image formation pages counted by said counting portion, reaching a first threshold value; a setting portion adapted to set, for each of the plurality of adjustment items, a second threshold value less than the first threshold value; and a determining portion adapted to determine, for each of the plurality of adjustment items, whether the number of image formation pages counted by said counting portion have reached the second threshold value set by said setting portion, before starting execution of the next image formation job, wherein, in the event that said determining portion determines that there is at least an adjustment item for which the number of image formation pages counted by said counting portion have reached the second threshold value, said control portion effects automatic adjustment by said automatic adjustment portion before starting execution of the next image formation job, even though the number of image formation pages counted by said counting portion has not reached the first threshold value, and wherein the second threshold value is automatically determined based on an average number of image formation sheets per job, within a predetermined period or within a predetermined number of times of image formation jobs.