High resolution and high-quality piezo electric printhead can achieve excellent production performance and vivid bright colors. Excluding the use of VOC (Volatile Organic Compounds) in the UV curable ink. The ink is enviromental friendly and no smell. With advanced automatic height detector which can detect the material thickness and find a good height position for the best quality printing. Drawer-type LED UV lamp cassette makes it easy to replace the UV lamp. Equipped with double japanese THK mute guide rail. Carriage is with a crash sensor with high sensitivity to ensure that the printhead will not be accidentally damaged. The white ink catridge is with the automatic stiring and circulation system, wich avoids the clog of the white printhead.