| 摘要 |
A method is disclosed for verifying the printing quality of a lithographic printing plate which is obtained by a plate-making process whereby an ink-receptive silver image is formed at the printing areas, characterised in that said method comprises the step of matching the colour of the silver image of said plate with a plurality of reference colours contained in a colour reference system that provides information regarding the quality of silver-based lithographic printing plates having said reference colours. The colour reference system may also provide information regarding the parameter(s) of the plate-making process so that said parameter(s) can be adjusted in order to improve the quality of the plates obtained by said process. |
