Using a printer having a recessed portion, printing up to the edge of
printing paper is performed without depositing ink drops on the platen.
Printing paper P is advanced by upstream paper feed rollers 25a, 25b, and
when its leading edge Pf reaches the opening of a downstream recessed
portion 26r, printing is initiated using nozzles #1-#3. Since printing
commences with leading edge Pf situated upstream from nozzle #1, even if
there is some degree of error in paper feed, the image can be printed up
to the edge of leading edge portion Pf. Subsequently, printing of the
midsectional portion of the printing medium is performed with nozzles
#1-#13. During both printing of the leading edge portion of the printing
paper using nozzles #1-#3 and printing of the midsectional portion of the
printing paper using nozzles #1-#13, printing is carried out in units of
a band of predetermined width in the printing paper feed direction. Thus,
when transitioning from printing of the leading edge portion to printing
of the midsectional portion, printing can be switched efficiently in band
units.