We always ignore some small details in the selection of printing materials, such as: the thickness of coated paper is generally 300 grams. When folding, the size error is at least 5mm, and the most is 1cm. If the common corrugated paper is used as the outer whatsapp Database packaging, the situation is different. Fold it once and this will result in a product that does not conform to the die-cut version, which will render all printed packaging unusable. To avoid this situation, it is necessary to understand the grams (thickness) of the paper, master the printing suitability whatsapp Database of the paper, and choose the printing paper reasonably. In the production process, there are often two cases of overprint fill and overprint stroke, but it is unclear how to judge whether a graphic is made with overprint outline or overprint fill?
Later, after several painful lessons, I realized that overprinting is actually also called embossing. Generally, black text must be overprinted, because the black text should not be hollowed out because it is too small to be hollowed out. Strong coverage, can cover whatsapp Database a variety of colors. Four-color printing is overprinted by default except for black text to be overprinted. Overprint strokes are usually applied when there are spot color patches, because spot color patches cannot overprint other colors, and must be overprinted where two spot colors are adjacent. It is easy to cause the problem of exposed white lines where the two colors are adjacent. Stroke overprinting is whatsapp Database to draw a line of the same color around the spot color block to press other colors (the line should not be too thick, generally around 1-3), so that if there is a little deviation during printing, the white edge will not be exposed.
Printing occurs when black is printed in four-color printing. In the past, when the design document was sent to the printing factory, it was always whatsapp Database found that the other party would report that the black in the document was printed. This situation generally occurs when printing on a four-color printing machine. We try to avoid 4-color black in the production file. The total value of the parameter value CMYK cannot exceed 300, otherwise the whatsapp Database printing phenomenon will occur. In the process of dividing the printed documents, the situation of overprinting and overprinting is not considered, which makes the final printed product unsatisfactory. In the process of my graduation project, I encountered such a problem, and at the end I realized that there was an error in the division.