Overprinting Technology of Typographic Printing Technique in Printing Factory

When registering the next color version, the position marking device of the last color version shall be used for the loading; the flatness of the netting distance and the screen shall be the same as the previous color version. The upper and lower color version of the nesting position is to align the previous color school pattern with the gauge, and give (with suction, etc.), slowly moving the frame to register the two. At this time, the fixture is initially tightened, the squeegee angle, the press pressure retention, and the previous color plate mark are placed in the jig of the net frame, and the pattern matching of the screen plate pattern and the school plate pattern is observed, and the one-color plate is the same. Then try to print, and check the sample printing and registration conditions. Under normal conditions, the fitting error is between 1 and 2 mm. After 2 to 3 test impressions, the error is basically stable, and then the adjustment method is determined, or fine-tuned. Ink pad, or fine-tuning screen fixtures, should not blindly twisted, and even mess up the rules, so that the whole batch of substrates is not allowed to overprint, but can not arbitrarily change the baffle.

The trimming range is limited to 2mm, and screen devices should be adjusted beyond 2mm.

Sometimes in the case of a last resort, it may be necessary to adjust the gauges. If you cut off the stop gauge, you must re-mark the change and position of the gauge on the school board and separate the prints of the shift gauges. , so that when overprinting the next color, pay attention and make corresponding changes.

When printing by hand, no matter which color plate is printed, the same direction squeegee should be kept, because the misalignment squeegee doubles the chromaticity error.