To perform printing control to obtain printed products having different
sizes in accordance with printing regions divided in the widthwise
direction of a printing medium having a fixed width, a printing control
method of performing heat transfer printing on a printing medium by using
a heat transfer sheet checks whether to perform printing on the printing
medium having a fixed width by dividing the printing region in the
widthwise direction of the printing medium (S602). If printing is to be
performed by dividing the printing region in the widthwise direction of
the printing medium (YES in S602), the method controls printing for
consecutive pages by making printing information of the consecutive pages
to correspond to the printing regions divided in the widthwise direction
of the printing medium.