Customers of color box printing quality is very important. How to control the printing quality of color box? Let’s take you through the analysis.
1. The influence of film on color box printing quality
The process of developing and fixing film. It is directly related to the sharpness and contrast of the image. The key to look at the text and text part of the density. The higher the density, the greater the contrast. The better the quality of plate making film. The quality of printing can be guaranteed. In addition, film thickness also has an impact on quality. Thin film works better than thick film.
2. Influence of printing plate on color box printing quality
In the process of printing. The intensity of the light source. Distance between light source and plate. And exposure time can affect quality. Strong light source, short distance short exposure time; Weak light source, long distance exposure time is long. The lines will get thinner if you expose them too long. Even broken, blurred. Printing will be dirty if the exposure time is insufficient. In the printing plate vacuum. Film and printing plate close to the degree also affect the quality. If the paste is not real may occur double shadow, blurred and other problems.
3. Influence of development on color box printing quality
Excessive developer concentration. Developing too fast. Easy to cause excessive plate development. The text lines become thinner. Small dot missing or thin text unclear. Affect the quality of color box printing; The developer concentration is too low. See light decomposition of the drug film surface is not easy to clean. Easy to dirty version when printing on the machine. Developing time is too long. Plate text and text will be thinner, thinner. Cause false impressions when printing. Is not clear; Developing time is too short. Easy to stain during printing.
4. Influence of ink transfer on color box printing quality
The printing process is the process of ink transfer. Offset printing ink transfer rate is low. It’s about 38 percent. Control of ink transfer rate is the key. Low viscosity, fluidity of ink easy to transfer high viscosity, low fluidity of ink transfer rate is low. The performance of ink varies with the environment. The viscosity is low at high temperature. High viscosity at low temperature. Select the type and type according to the actual situation. Add the right amount of ink in ink oil. To improve the ink transfer rate.
5. The suitability of paper
Paper suitability is reflected in smoothness, whiteness and so on. Smoothness of the paper required a relatively small amount of ink. In the printing process. In the same variety, the same quantity, the same price conditions. Smoothness, whiteness higher paper printing quality is good.
6. Ink balance
Ink balance is a kind of relative balance. During the high speed operation of the equipment. The printing plate is inked and watered. Mutual infiltration. As a result, ink emulsification occurs on the printing plate. If the amount of water and ink is not controlled well. There will be paste and dirty printing. Printing is usually done by reducing the amount of water and increasing the amount of ink.
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