Image printing method and apparatus

An image printing apparatus which prints an image on a desired paper sheet, comprising:

• image printing means which has an image printing member and prints a toner image on the image printing member;
• and
• control means for controlling a rotational speed of the image printing member by detecting the toner image printed on the image printing member by said image printing means,
• wherein letting a rotating direction of the image printing member be a vertical direction, a first vertical magnification adjustment value be a value for adjusting a magnification of a toner image in the vertical direction which is printed on the image printing member, and a second vertical magnification adjustment value be a value for adjusting a magnification of an image in the vertical direction which is printed on the paper sheet, said control means executes feedback control on the rotational speed of the image printing member on the basis of the first vertical magnification adjustment value when a first mode of printing a toner image on the image printing member and correcting an image printing system is selected, and executes feedback control on the rotational speed of the image printing member on the basis of the first vertical magnification adjustment value and the second vertical magnification adjustment value when a second mode of printing an image on a paper sheet by operating the image printing system is selected.