According to principles of printing, there are malfunctions often appears to printer nozzle of small & large print. This may result from crystal devices or electric deflection device.

The filter and the negative pump of recovery tank filter must be frequently changed.

 Most customers prefer to use international ink jet printer, because of their good quality and after-sale service, in fact, its price is several times higher than the China-Made one.
 
New types of inkjet printer with piezoelectric ceramic technology usually use the printing method of natural flow to the nozzle, without pumps, filters, crystal and other components.

This is the reason frequency of problems much less. These printers do not distinguish the size of fonts, which are suitable for both small and large character printing. However, due to its low injection pressure, the printing distance is closer than normal. In principle,the closer of jet printing, the better printing effect. Therefore, the inkjet printer with piezoelectric ceramic technology cause a bad printing effect for special shapes objects,such as, plastic packaging tape and uneven surface of the material. However, for the smooth surface of objects, such as cartons, boxes, caps and other surfaces, its printing effect is
much better than the large/ small printer.