Patent ID: 6896354

Claim:
An ink jet printer for making print on at least one recording paper, comprising: a supporting axis; and an ink carriage that reciprocates along the supporting axis, the ink carriage being adapted to be at least partially surrounded by the at least one recording paper and including ink heads each provided with an ink nozzle facing a different direction, such that printing is effected on the at least one recording paper simultaneously at more than one portion along a transportation direction in which the at least one recording paper is transported through a transportation path, wherein each of said ink nozzles is provided with a plurality of ink holes aligned in a line slanted with respect to a running direction along said supporting axis and the transportation direction of the recording paper, and said plurality of ink holes in one of said ink nozzles are shifted by half a pitch from said plurality of ink holes in the other ink nozzles as to intervals in at least one of the running direction along the supporting axis and the transportation direction of the recording paper.