| 摘要 |
PROBLEM TO BE SOLVED: To provide a multistage printer, wherein printing mechanisms are arranged in a plurality of rows, capable of adjusting printing density by protruding and retracting the faces of the seals of the printing mechanisms when a difference in printing density between rows is generated by the structural irregularity of the printing mechanisms. SOLUTION: In the multistage printer, a receiving seat block including a rotary receiving piece positioned on the rear side of the face of the seal of the printing belt of each of the printing mechanisms is arranged so as to be capable of protruded and retracted in a printing direction and the protrusion and retraction regulating mechanism of this block is arranged.
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