To provide a sheet printer that can apply the digital printing of a plurality of colors on both sides of a sheet with high accuracy in front/rear registration.
A sheet printer 100 comprises: a first printing cylinder 121 for holding and transferring the end of one side of a sheet 1 so that one face of the sheet 1 is oriented toward the outside; a first digital printing part 120 having a first rubber cylinder 122 and a first inkjet device 123 for applying the printing of a plurality of colors on a face of the outside of the sheet 1 which is held at the first printing cylinder 121; a second printing cylinder 131 for holding and transferring the end of one side of the sheet 1 so that the other face of the sheet 1 transferred from the first digital printing part 120 is oriented toward the outside; and a second digital printing part 130 having a second rubber cylinder 132 and a second inkjet device 133 for applying the printing of a plurality of colors to a face of the outside of the sheet 1 which is held at the second printing cylinder 131.
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KAMATA MIKIO
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Tadahiro Mitsuishi
Mitsuishi Shunpei
Yasuyuki Tanaka
Hiroshi Matsumoto