| 摘要 |
PURPOSE:To prevent the clogging of a nozzle and to reduce cost, by appropriately selecting one of printing heads corresponding to respective colors to perform printing and blocking the nozzles of unused printing heads from the open air by caps. CONSTITUTION:In such a case that yellow ink is printed after certain color ink, for example, black ink is printed, the black printing data corresponding to one line is received at first and a carrier 5 is subsequently scanned to perform printing. Next, when yellow printing data is received, a motor 8 is rotated to rotate a turntable 4 in a B-direction. By this rotation, the engaging piece 3c of a cap 3 is detached from the engagement with a cap open post 10 and a black printing head 1' is capped. Next, when a yellow printing head 1'' is rotated, the engaging piece 3c of the cap 3 is brought into contact with the open post 10 and the cap 3 is opened with the rotation of the turntable 4 to expose a nozzle 1b. At this time, a contact 7 is brought into contact with the substrate of the printing head 1'' to be electrically connected thereto and the color of the printing head 1'' is discriminated and the carrier 5 is scanned to perform printing. |
