During the print，the prosperities of UV ink and substrates can be affected by the variation of workshop temperature.when the circumstance’s temperature is low and the humidity is high.the adhesion force between uv ink and substrates reduces as the UV ink reaction or curing become slow,therefore,we had better adjust the plant’s temperature to proper range when using the ink.In general, the workshop temperature should be 20-25℃,and the relative humidity is 50%-65%.