| 摘要 |
PURPOSE:To provide the laser beam printing device capable of printing or making a pattern with high accuracy on the proper marking target position regardless of the deviation in a position of works without causing the trouble even if the works have different dimensions and weight and also, even if the works are the same. CONSTITUTION:The laser beam printing device is provided with at least a laser beam oscillator 1, a liquid crystal mask 2 to display a desired pattern P, a camera 4 to pick up a work 3 on an image and a controller 5, characteristic part position coordinates (ds) of a marking reference work 3o and marking target position coordinates (dp) of the marking reference work 3o are stored in the controller 5 in advance, characteristic part position coordinates (di) of a work 3i picked up on an image by the camera 4 are obtained every time before each work 3i is marked and position coordinates Di formed by adding the marking target position coordinates (dp) to the difference deltasi between the characteristic part position coordinates (ds) and the characteristic part position coordinates (di) are obtained. After the pattern P is then displayed on the position coordinates Di on the liquid crystal mask 2, the laser beam oscillator 1 is oscillated, the pattern P is irradiated with a laser beam Lo and the pattern P is marked on the work 3i by the transmitted laser beam L1. |
