| 摘要 |
PURPOSE:To reduce a filing space and to enhance a printing speed, by providing two printing heads so as to be capable of printing the front and rear surfaces of printing paper and reading the printing data of an even page to simultaneously printing odd and even pages. CONSTITUTION:When printing data is inputted from a host CPU, a controller 22 processes the printing data to send output for driving the first printing head 1 from the first solenoid driver 23. The first printing head 1 prints the data of the first page on the front surface (odd page) of the first paper among printing papers 7. The printed paper 7 is guided by a guide member 6 and the rear (even page) of the first paper reaches the position of the second printing head 2. The controller 22 preliminarily stores the data to be printed on the second page of the paper in a data buffer 22b. When the third page becoming the front surface (odd page) of the second printing paper becomes a posture printed by the first printing head 1, the second printing head 2 receives printing data at the same time from the data buffer 22b of the controller 22 and starts the simultaneous printing of the second and third pages of the paper. |
