| 摘要 |
PROBLEM TO BE SOLVED: To provide a fountain solution application system for ink-based digital printing.SOLUTION: The system comprises: an external liquid applicator for applying multi-component, multi-functional fountain solution to a surface of an imaging plate. The plate is image-wise exposed using a high power laser to remove primary components of the fountain solution from select regions of the plate according to digital image data, leaving a layer of secondary components at the select regions. The plate is then inked with ink useful in printing. The ink adheres to the select regions from which the primary components have been removed to form an ink image. The ink image is transferred at an image transfer step, where the secondary components enable efficient transfer of the ink to a medium with reduced image quality defects. The multi-component fountain solution comprises primary components 221 that reject or repel ink, and secondary components that function as a release agent 227. |
