UV Fluorescent powder application (1)
Before using, must thoroughly clean the related parts such as the ink roller, ink fountain, and the board .Avoid mixing with other colors. If the condition support,the printing factory shoould keep the special equipment, replaced with a new ink roller.
UV Fluorescent powder application (2)
Color matching between the colorless ultraviolet fluorescen ink and the ordinary color ink . Print the normal ink with colorless fluorescent ink red , the fluorescent effect is best. If using the colorless fluorescent ink red to printed the ordinary blue ink or using the colorless fluorescent blue to print the ordinary red ink the effect is poor.
UV Fluorescent powder application (3)
When printing the paper, the colorless ultraviolet fluorescen ink is usually final impression .Otherwise will be covered with other ink ,and influenced the fluorescence effect. When printing the transparent plastic , the situation is different. When doing the external printingl,the fluorescent ink will be the final color in printing, and the internal printing will be the first color.
UV Fluorescent powder application(4)
The colorless ultraviolet fluorescen ink is not absolutely the colorless or no traces. On the blank paper, even printed on the completely transparent and colorless light oil, will also because the different refraction and reflection coefficient of the paper and light oil, appear the visual differences. Formation of oily be soiled or light paper surface.
UV Fluorescent powder application (5)
The colorless ultraviolet fluorescen ink can only reduce mark under the specific conditions:
(1) The change the color piece of pattern or test into the line;
(2) It is better to print the fluorescent ink at the parts have the basic color. Is conducive to cover the fluorescence ink marks.
(3) Should choose good absorbent paper.The ink absorption performance is better than the invoice from ,copper plate and paper jam .
(4) As for the printing pruducts which have the special requirements of stealth ,the first step could print the colorless ink
UV Fluorescent powder application (6)
The factors which will influence the fluorescence brightness:
(1) Paper. Should choose the bond paper or paper without fluorescent whitening agent,so that the fluorescent effect will be more ideal. When printing on the paper have the whitening agent ,the fluorescent effect will be significantly reduced. Anyhow,the whitening agent content be more higher, the fluorescence effect will be weaker, opposite will be stronger. So should choose thelow whitening agent of paper as far as possible.
(2) Ink layer thickness. The ink layer of the printing products be thinner, the fluorescence effect will be weaker. The ink layer of the printing products be thicker, the fluorescence effect will be stronger. But at the same time the printing trace will be more obvious. If the users can pay attention to those characteristics when using the uv fluorescent ink, if you , will must achieve good printing and anti-counterfeiting effect.
