| 摘要 |
In the manufacture of passports, which contain a number of paper sheets and a data sheet covered with transparent plastic film, personal details such as name, place of birth and date of birth of the passport-holder are burnt into the paper fabric of the data sheet, which is already covered with plastic, using a laser beam. The passport can be bound into book form before the plastic-covered data sheet and further paper data sheets are provided with data relating to the holder of the passport. <IMAGE> |
