| 摘要 |
The facial image, personal data, and machine readable symbols are printed on a personal data sheet 20 of a passport booklet with an ink 52 which penetrates the surface 31 of the sheet. The facial image, personal data, and machine readable symbols are inkjet printed in one pass followed by lamination with a transparent sheet 30. The ink used is water-based and diffuses by capillary action into the paper base of the sheet. |
