| 摘要 |
PURPOSE:To easily discriminate a meaningful surface on which printing is to be newly made from a meaningless surface on which printing has been already made by a method wherein input information is printed on a surface of selected paper by a first printing means, and selected information through a fixed pattern generation part is printed on the rear or top surface of the paper by a second printing means. CONSTITUTION:An input part 1 inputs FAX equipment receiving information, printing information to a computer printer device, information of an original for a copying machine, and the like. A supply means 2 issues printing paper of a type selected by a selection part 4 to a printing means. The first printing means 3 prints information inputted from the input part 1 on a surface of the printing paper. A fixed pattern generation part 5 generates fixed pattern information of a type selected by the selection part 4. A second printing means 6 prints the fixed pattern on the rear or top surface of the printing paper. For changing over the rear and top surface of the paper at the second printing means 6, a paper reversing means is provided between the printing means 3 and 6. In this manner, an unprinted or printed surface of reused printing paper can be easily discriminated. |
