| 摘要 |
Disclosed are a method and device for ink transfer and feed, and a printing apparatus comprising the device. The device for ink transfer and feed comprises: at least one set of ink feed mechanisms, each set comprising at least an ink supply device, a colour mould roller and an ink transfer roller; the ink transfer roller is connected to a plate cylinder; the ink feed mechanism and the plate cylinder are driven by first and second driving systems, respectively. During a stipulated period, the plate cylinder rotates at a constant speed, and the ink transfer roller can rotate at a variable speed with respect to the plate cylinder, such that the ink transfer roller is offset from the ink transfer position of the plate cylinder by a set spacing, and the offset spacing can be adjusted according to the web requirements of the product to be printed, without the need to exchange the colour mould roller, ink transfer roller and plate cylinder, etc. Hence, the present invention can ensure sufficient ink supply from the ink feed mechanism to the paper to be printed and meet the requirements for printing various products very well, greatly improving the printing quality and productive efficiency. |
