| 摘要 |
PURPOSE:To prevent misinsertion by arranging a means of printing an identification code when a ledger paper is new and blank as inserted receiving an insertion instruction with such an identification code. CONSTITUTION:When a print head 22 is moved to the right, an identification code P1 is read with an optoelectronic device 61 incorporated into a reading element 21 and after amplified 62, the output signal 63 is compared with a reference voltage 64 by means of a comparator 66. The value ''1'' is given to the part printed and ''0'' to the part not printed. When the outputs of the comparator 66 are all ''0'', a blank status is outputted to a CPU3 with a judgement that an identification code P1 is not printed thereby automatically moving a print head 22 to the left. At the same time, with a judgement that the checked density is sufficient, the execution of the subsequent insertion is resumed. |
