China Printing Solutions-Plate lapped on the roller surface and the thickness of the plate itself has certain, version of the base has a certain tensile strength, elongation and bending strength, so after the plate installed computer, elongation of the surface layer and the and close to the lining of the drum will shorten, lead to produce very big pressure in bend, so easy to damage the version of the base, but also can make plate fell off the plate cylinder, and damage, the plate cylinder or rubber cloth ink roller, cause accidents.If the plate cylinder radius constant, the pressure will increase with the increase of the thickness of the plate.If the plate thickness is constant, the pressure is increased with the plate cylinder radius.Now small and medium-sized newspaper printing factories mostly use small roller printing machine, plate cylinder radius is small, the version of the base damage probability is bigger.
When installing a plate, in order to ensure the plate have higher resistance force, first of all should be under the condition of the guarantee plate has enough strength, choose a smaller plate thickness.Secondly, in order to avoid too much pressure, on the one hand to make the bending Angle is accord with the requirement of printing plate cylinder, namely the curved version shoulds not be too sharp, otherwise there will be a great plate bend stress., on the other hand, we will strictly in accordance with the operational procedures, ensure from mouth diao to drag tip, plate are close to the surface of the plate cylinder.It is important to note that if found to have plate installation does not reach the designated position, need to report in time, if not correct, should be in version and reinstall.
In the printing process, the operator should always observe the working state of the plate, pay attention to listen to the plate cylinder place whether there is a different sound, and print the diao mouth if there is a chalk line and drag the tip.If the above problems, it may be due to version plate base damage, should immediately check plate, if it is found that there is abnormal, should immediately change version.China Printing Solutions
(Gold Printing Group) |
