A transfer sheet comprises a base sheet, a thermal transfer layer having a plurality
of YMC transfer region sets, each transfer region set having a plurality of transfer
regions with functions different from each other, and identification marks formed
in the YMC transfer region sets, respectively. The identification marks formed
in the different YMC transfer region sets have different forms, respectively. The
transfer regions are printed by using a plurality of transfer region printing cylinders,
each provided with a plurality of printing plates, and the identification marks
of different forms are printed by using a single identification mark printing cylinder.
The respective identification marks of the YMC transfer region sets represent information
about the positions of the corresponding YMC transfer region sets, respectively.
The transfer regions are transferred after correcting transfer conditions on the
basis of information represented by the identification marks.
