Several factors causing printing errors
2022-10-14- Detail
Several factors causing printing errors
the following are common reasons for printing accuracy errors: 1 When making multi-color overprint (case 3 of halftone printing: at this time, the angle of the contact surface between the push plate and the toothed rod head should be changed. The contact surface of the universal experimental machine is usually fixed on the surface of the push plate with a flat steel sheet through two upper and lower screws. The adjustment method is to loosen the two screws and pad the upper or lower side (only one side) between the steel sheet and the push plate with copper sheet or other light metal sheet, so as to change the angle, After repeated verification and adjustment until the qualified version is brushed), the version is dried at different temperatures, resulting in errors in printing accuracy
2. The tension of the version is low or the tension of the overprint (halftone) version is different
the products produced are used for packaging in beverage, food and pharmaceutical markets. 3. PVC or TPE materials are enameled Drying with a blow dryer and uneven drying of the plate
4. Use too old, non knotting and deformed frames for plate making, because the frames are not disordered, resulting in the deviation of the printed image (these problems can be detected with negatives)
5. When multicolor overprint, the distance used is inconsistent
6. The rubber scraper is deformed
7. Affected by some factors, the size of the substrate changes
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