[hot blog anti-counterfeiting ink printing network] although the theory says that black is the light absorbed completely, but still has a glossy black ink.But any one color hue, lightness and saturation is represented by three characteristics, so the color matching process must consider these three factors.Ink pigment (toner) and resin milled a link, the pigment particles wrapped around a layer of transparent resin oil, this layer of resin oil has the refraction and reflection of light, so that we can feel that black ink printing still has some of the luster on substrate.

 

In printing ink color, according to the actual printing process, ink layer thickness, the printing substrate conditions to decide the printing ink.In the choice of ink, to cover the capacity considering the ink itself burnish, hue, color strength.

 

1 gloss can be measured with instrument, also can judge by the human eye, usually in color matching process only with the naked eye observation.Gloss actually refers to the ink printing samples by light after reflected in the same direction light capability of the degree.It directly influences the print appearance, is a very important index.At the same time, in the choice of ink, to distinguish between the ink itself is light, half light or matte ink, avoid mixing errors.

 

2 coloring is a method of representing high and low concentration of ink.Its measurement is a standard white ink to a certain amount of ink add a certain number of dilute mixed, then the method is compared with the standard sample.Differential resistance reflect the degree of influence of mixed color ink, printing ink film thickness.

 

3 color is the basic characteristics of the color, used for a qualitative difference.Color, the first to consider hue is consistent, the test method is usually simulated by scraping scraping color printing paper or, with the eyes of the standard sample and sample was observed and compared.

 

4 the hiding power is the degree of color ink cover.The better the hiding power is more transparency, transparency level affects the efficiency of ink color and printing substrate influence degree.Through the color identification strickle do scraping the color test (Drowdown), the difference can be compared with ink sample standard sample in three aspects, hue gloss, hiding power.Methods: in the upper left corner identification paper discharge standards of printing ink, upper right corner to put color ink, between about a centimeter or so, with the blade in force and strickle almost vertical angle flattening thin apply part and to angle light force rapid spread of thick apply part.

 

Stay ink surface drying, can thin apply part of ink color, hiding power, transparency in the black part identification ink, in thick apply part between the difference of judge gloss and observe the color appearance.Usually black and color ink used white strickle, but white ink used black strickle.