| 摘要 |
PURPOSE:To eliminate the need for controlling the movement or moving direction of a printing head or a paper and prevent misregistration of colors from occurring, by disposing printing heads on the same circumference of a circle with the same position on a paper as a center so that the printers can print at the same position on the paper while a carriage is located at the same position. CONSTITUTION:For example, in the case of serial printing in an ink jet or optical-type printing head, a plurality of printing heads 5 are mounted on the carriage 4 on the same circumference of a circle with the same position P1 on a paper 1 as a center so that the heads 5 can print on the same position P1 on the paper 1 while the carriage 4 is located at the same position. During a scanning movement of the carriage in the width direction of the paper, color printing can be constantly conducted on the same position on the paper by the heads 5, and accordingly, when performing color printing by mixing two or more colors, it is unnecessary to drive the heads 5 while adjusting time differences or to adjust the order of driving, and printing driving can be controlled easily and accurately. |
