If the printing material and the ink are mixed with dust and printed without processing, the printing plate will be damaged due to the pressure of the squeegee. When the plate is underexposed, the pinholes will be generated, and the printing film will leak ink. At this time, adhesive tapes, etc. can be used for emergency handling from the back of the plate. If this operation is not very fast, the ink on the layout will be dried, and the whole of the plate will have to be wiped with solvent.
Wipe plates are also the cause of delamination of the plate, so it is best avoided. In addition, the ink leakage of the printing plate often occurs at the ink staying part, so it is better to strengthen this part at the time of plate making.
In the manual printing feeding process, when the metal plate and the hard plastic plate are inserted into the printing table, a sharp corner puncture film is liable to occur, so care must be taken. It is generally best to check and reinforce before printing. In addition, it is necessary to fully correct text errors and pinholes in the plate, and to reinforce the periphery of the plate to avoid downtime due to failures such as printing plates, ink, and squeegee.