It is necessary to understand the operation of ink printing press. After learning the operation skills of ink printing machine, it can make the skills of the artisan to a higher level, but also can help self-study friends.
1. The main exposure should be carried out immediately after the back exposure, because the photosensitive activity will gradually disappear, resulting in a longer main exposure time and poor exposure tolerance.
2, through the back exposure can establish the base plate in order to get the required relief and strengthen the adhesion of polyester supporting film and photosensitive resin layer. Correct back exposure from the direction of the polyester supporting film can protect the fine pattern of the plate during the washing process and prevent the relief from collapsing.
3, when the resin version of the guarantee layer is torn off, version of the photographic speed rapidly attenuation, should be immediately placed on the film plate or within 10 minutes of the main exposure in order to get a better effect.
4, the main exposure time can be determined by the main exposure test, photosensitive resin through the polymerization reaction into insoluble, printing plate can reproduce the fine patterns on the film. Before the main exposure to hand wipe the vacuum film exhaust air so that the plate and negative close.
5. The printing plate must be dry, otherwise it will affect the thickness uniformity of the printing plate. After drying, do not let the printing plate contact with other surfaces, do not touch the printing surface with your fingers, otherwise it will leave traces. But to stick, be sure to remove any spots on the surface of the plate. After adhesive, to clean the remaining spots on the back of the resin version, if you do not clean these things, will affect the plate thickness uniformity and the adhesion of the plate tape.
Post time: Aug-01-2021