For printing plates that have not been baked, if you find that the surface of the plate is dirty after using the machine, you must use a long bar brush to dip and remove the repair paste. Just apply a few brushes to the uninked printing plate, and the dirt will disappear instantly. However, for the printing plate with ink on the machine, the dirty marks become stubborn, especially the dirty lines caused by scratches need to be wiped a few times before they can be removed, or even not removed at all. The reason is that the brush is too light and too loose, and has no strength.
In this regard, my treatment method is: first use a brush to dip the revision paste, rub it on the dirty spot, then turn the brush upside down, and use the hairless end to wipe on the dirty trace of the revision paste. A few times, because of the concentration and friction, the dirt was immediately eliminated.
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