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In order to adapt to the development and changes of market economy and enhance the competitiveness of products, many corrugated box layouts began to use dot graphics to highlight products.Dot Print of Corrugated Box
It not only enriches the layout, but also improves the packaging grade of products. In the packaging design, the graphics have strong expressiveness and visual impact, which is easy to attract people’s attention. Dot Print of Corrugated Box
The graphics printed by dot are difficult to counterfeit, with good anti-counterfeiting performance, rich sense of hierarchy and three-dimensional feeling, which is pleasing to the eyes. To get high-quality dot effect, we must first work hard on the manuscript: for corrugated box printing, too dense dot is easy to cause paste phenomenon; Dot Print of Corrugated Box
Too few dots will lose graphic details and affect the graphic effect. We must grasp the accuracy when making. Graphics are divided into vector graphics and bitmap, and their dot processing methods are different. Dot Print of Corrugated Box
For vector graphics, the gray level should be controlled to reflect the level through the change of gray level. The size of gray level determines the dot size and thickness.Dot Print of Corrugated Box
Process scanned graphics. After completion, it is converted to the gray mode, and then processed by the color halfone in the pixel filter in Photoshop.Dot Print of Corrugated Box
The size of the dot should be adjusted according to the graphic gray through the parameters in the color halfone dialog box to obtain the dot graphics suitable for the printing conditions. Dot Print of Corrugated Box
After the vector image and bitmap are processed, the negative film for printing must be output through the output center. The number of output network lines also determines the important parameter of the number of graphic dots.Dot Print of Corrugated Box
The larger the number of network lines, the more dots. When outputting, the appropriate number of network lines must be selected.Dot Print of Corrugated Box
In the process of making dot graphics, we should comprehensively consider the gray graphics of vector graphics and the number of output network lines, as well as the halftone processing graphics of bitmap and the number of output network lines, so as to obtain the overall network shape effect.Dot Print of Corrugated Box
Generally, the printing of dot pattern and large-area color block pattern in the same block shall be avoided as far as possible.Dot Print of Corrugated Box
If the large-area color block pattern and dot pattern are printed separately, the pressure adjustment and color control shall be much simpler. After the design draft is output into negative film, plate making can be carried out. Dot Print of Corrugated Box
The resin plate used to make dot graphics requires high hardness to 45- 50。 Shore A is appropriate, and the material has low elasticity and slow denaturation recovery, which can ensure good reproducibility of dot graphics. Dot Print of Corrugated Box
The dot resin plate on the same product package shall be made at the same time and completed at one time. It is very easy to have differences in dot printing depth and produce different effects.Dot Print of Corrugated Box
If the dot plate cannot be processed at one time, the back exposure, main exposure, washing, drying, debonding and post-processing time must be strictly controlled during plate making, so that the data processed each time are consistent, so as to obtain the dot resin plate with the same effect.Dot Print of Corrugated Box
When designing dot graphics, we should also consider the number of lines of the anilox roller of the enterprise printing press. The correct selection of the anilox roller is very important, which determines the success or failure. Plating roller is the most common type.Dot Print of Corrugated Box
With the wide use of anti scraping blade and the promotion of new high-speed printing machines, the rapid wear of anilox roller is a difficult problem. Many enterprises begin to adopt wear-resistant ceramic ink roller, which has high demeanor and is conducive to dot graphic printing. Dot Print of Corrugated Box
When the same color printing includes full plate and dot, the thickness of the full plate can be padded up by 0.15-0.30mm, which is conducive to improving plate pressure and printing pressure. Dot Print of Corrugated Box
There will be dot expansion during printing, which requires the printer to adjust the pressure as lightly as possible to obtain the minimum dot expansion, and make detailed records of the parameters adjusted by the printer, so as to track the same printing effect in the future. Dot Print of Corrugated Box
After printing, the dot resin plate shall be cleaned immediately to prevent the ink from drying on the plate, causing dot blockage and bad plate.Dot Print of Corrugated Box
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