What kind of small print machine is better? Usually there are so many places worth noting.
First of all, it is necessary to look at whether the small plate-making machine integrates the functions of exposure, drying and post-exposure. If so, then the small plate-making machine passed the first level.
Secondly, the operation of the small plate-making machine must be simple and convenient. If it can reach the level of the imported plate-making machine, it is best.
The third is to look at the service life of the small-sized printing machine. How can we see if the service life of the small-sized printing machine is very long? It depends mainly on two points. First, it depends on whether it is imported U-shaped. The intensity of the UV lamp, followed by the length of its exposure time.
Fourth, the small printing machine makes the dot reduction high, the dots are clear and full, and the small characters, lines and independent points are not lost, and the 175 line version can be made. Finally, it would be best if you could use unique techniques and special processes.
How to choose the right printing machine? Mainly look at the lighting effect.
1 General printer manufacturers use 355~420nm photosensitive materials, which requires the spectral peak of the light source system to remain within this range, while the other bands have the smallest light energy. In this way, it is guaranteed that the printing time is short and the dot reduction effect is good.
2 The uniformity of the light source of the printing machine is required to be above 86% (using precision measuring instruments). Use a 30% dot film film to print a PS plate. After development, measure with a densitometer. The error between the middle and the four peripheral angles is generally less than 2%, so that it will not appear when printing large-area color blocks. Color difference.
3 The stability of the light source refers to the self-adjusting ability of the plate-printing machine when the lamp heat and cold, voltage fluctuation and other factors change, especially the quick-start light source.
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