why DX5 head can't printing color?

When DX5 head eco solvent printer printing no ink nozzles , resulting in the lack of a color screen content , often referred to as " nozzle clogging ," especially for Scitex machine class picture quality is a major factor and yield impact. Discuss the reasons for nozzle clogging machinery and contribute to a better understanding to improve picture quality.

Principle DX5 head is quite something like a bicycle pump is often used in our daily , one last look hardcore sports pump nozzle is our soul parts --- piezoelectric crystals , when you find pump outlet when not to fight , not outside almost two reasons: road barrier or gas pump iron does not work.

DX5 head of course, much more complex than the pump , so " jam" is also a variety of reasons , generally have the following situations:
An ink accumulated in the DX5 head out to a certain extent clogging of the spray : blockage is the most common way, as the ink solvent evaporation into the air to be so that the screen becomes dry, so the ink is a volatile liquid , in the air and clarity of volatile solids . When the spray orifice of the cloth inkjet always around the ink residual part , this part of the ink after drying in the air injection holes will gradually become smaller or clogging of the nozzle holes , but because it is outside the nozzle hole , it is easy clean , and this is the reason why we often cleaning nozzle .

2, the piezoelectric crystal damage : certainly not the ink jet nozzle , the general Piezo print head can be about a year, a lot of work in the printing plant may also use less than a year is normal .

3, the piezoelectric crystal fatigue damage : the phenomenon is sometimes DX5 head inkjet , sometimes not spray ink , especially when large -jet ( ie spray dark screen ) " jam" phenomenon is obvious , then the best way is replace with a new nozzle.

4 , filter clogging in the nozzle causes the ink nozzle not : Use a longer nozzle , particularly in the evening printing task is not always full factory downtime , ink does not flow in the nozzle in a longer time , is easily absorbed in the interior of the filter net or the wall of the ink channel , the ink flows smaller cross-sectional area of the nozzle will cause no ink phenomenon , now special equipment can help you solve this problem nozzle .

5 , the ink viscosity is too high or too low : The viscosity of the ink is so high that poor flowability of the ink , the ink ejection amount per unit time is insufficient head ; viscosity of the ink is too low , that is too thin, the pressure in the nozzle orifice is easy Withdrawing transistors inhaled air can not absorb ink , which is emitted by air ; both will cause no ink nozzle phenomenon . This often requires the customer environment is very important to store the ink , the ink should be placed before the next use of the use environment of the ink more than 24 hours as well as the viscosity of the ink will be placed at a high temperature, and high temperature viscosity will becomes low , a large difference in viscosity , when the viscosity difference between the larger mixed ink is used, it will cause the ink -ejection phenomenon

6, the drive circuit fault : the drive circuit electronic devices aging and dirt accumulated too dry ink , the nozzle may affect driving voltage , resulting in an unstable nozzle ink or not ink.

7 , the type of ink : Some manufacturers of ink due to improper control of the amount of desiccant drying too fast, easy to cause the ink to plug in an external , although can be cleaned , but more frequent cleaning intervals , once a long time without the use of sprinklers and no timely when protection nozzle, spray painting again at the next nozzle may cause permanent damage .

8 , frequent replacement ink : When replacing the ink may in many cases failed to protect the nozzle, the state will also affect the inkjet nozzle .

9, the machine uses the ambient temperature and humidity : generally recommended temperature is 22 to 25 degrees, humidity 40 to 70% , high and low temperature on the viscosity of the ink, the ink will produce the phenomenon of missing nozzles , often mistaken for " nozzle clogging . "

10 , head drive voltage: suitable nozzle inkjet nozzle voltage causes more fluid .

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