| 摘要 |
PROBLEM TO BE SOLVED: To enable continuous multicolor printing of a large number of printing sheets at a high speed. SOLUTION: A drum 10 rotatable centering around its axial line 10S at a constant peripheral speed, a medium holding means 20 capable of holding a printing medium M to the outer peripheral surface of the drum 10 and respective color nozzle units 200 arranged so as to be positionally shifted in the rotary direction of the drum 10 and having a large number of ink jet nozzles 207 are provided and respective color inks are sprayed on the printing medium M during the rotary movement along with the drum 10 from the selected color ink jet nozzles 207 to enable color printing and an ink drying means 30 directly or indirectly drying the inks on the printing medium M held to the drum 10 is provided not only to apply printing to the printing medium M during rotation but also to accelerate the drying of the ink on the printing medium M. |
