| 摘要 |
PURPOSE:To carry out the reliable inspection of printing quality, by a method wherein the part where ink is peeled off on a film ribbon is read by loading the film ribbon after printing on a read device and collated with the specific pattern stored in the device. CONSTITUTION:The ink 3 on the film ribbon 2 is peeled off from the material 2 of film ribbon by heating the thermal head 1 and adhered to the printing paper 4. Thereby, the transparent part is generated only on the part where the ink is peeled off on the film ribbon 2, that is, on the printed part. To accurately read this transparent part, the film ribbon attached with markers 6 (transparent points) at a dot interval in the lateral direction of film ribbon 2 is used. To read the printing pattern, the film ribbon 2 after printing is moved at a fixed speed on the photo sensor 7 and the pattern of light is read with the photo sensor 7 by exposing it with light from above. |
