What should I do if the ink does not come out when I use a UV printer?
One,uv printer does not produce ink solution
1.When the ink curing and drying are not enough for UV printing,sometimes in order to increase the color saturation of the UV printed matter,the printing pressure is large,the ink layer is thick,and the dots increase seriously,which will aggravate the difficulty of ink curing.In order to ensure the color reproduction,it can only be maintained.Larger printing pressure.At this time,it is still necessary to moderately reduce the printing speed of the UV printer,and match the printing speed with the curing and drying of the UV printer ink;the speed is slow,and the UV light irradiation time is relatively long.Adjust the distance between the UV lamp tube of the UV printer and the substrate.Large UV light intensity can also speed up the curing of the ink.
2.Insufficient ink adhesion.Because the permeability of films,metals,plastics and other substrates is very poor,the ink adsorption is weak,even after UV curing,the ink adhesion of uv printers is also very poor,and the printing quality is not high.In order to improve the ink adhesion,usually through the surface treatment of the material.Generally,UV offset printing ink can be better attached to these substrates.The surface energy of the substrate must be checked before printing.When corona is used,it is necessary to understand the timeliness of the corona treatment.The corona treatment will be automatic after one week.Deterioration,if it needs to be reused,it must be corona treated again,otherwise it will affect the curing and drying and the adhesion fastness of the ink layer.
3.Ink emulsification is serious.Compared with the oily ink and the UV ink,the supply of UV offset ink from the ink fountain is slow,and the printing ink layer is thinner,which causes serious emulsification of the ink.Government policies and supervision.The emulsified ink will accumulate on the inking roller and Remains on the layout and blanket,causing unclear graphics and text.The concentration of the fountain solution and the ambient temperature will also have a greater impact on the emulsification of the ink.Reduce the printing speed of the uv printer,control the printing speed at 5000-8000 prints/hour,and reconfigure the fountain solution for fault analysis and troubleshooting,control the isopropanol concentration at 11-13%,and the conductivity at 1800-1900uS/cm,The pH value is 5.6-6,and the temperature is 5-10°C,which can better control the emulsification of UV offset printing inks.
Two.UV printer manufacturer Dacen summary
If the uv printer does not emit ink,don’t worry,first solve it through the above methods.If it still doesn’t work,you can directly contact Dacen after-sales service department,they will solve it for you.This article is about the content of"uv printer does not emit ink",hope Help you.
