Ink transfer and color adjustment techniques

[China Packaging Network News] There are many skills to learn when ink is used for ink transfer and color adjustment, such as using close colors, using similar chemical performance color materials, and adding a little diluting agent.

The first point: use near color.

With a near-color, the deployment of color is easy to succeed, and the effect is better. For example: red + gold red = red; green + red = brown; original red + blue lotus = black (brown) color.

The second point: the use of similar chemical performance pigments.

The ink with the same chemical performance pigment is used for even coloring. Do not use color inks that are incompatible or difficult to blend. Titanium cyan blue ink using inorganic pigments, and benzine yellow ink mixed with organic pigments with green inks, is equivalent to color, it is difficult to mix them evenly. If the green ink of titanium cyan pigment is selected as the base color, and a little yellow or blue ink is used to modulate the green ink with a yellowish or blueish color, it is much easier. The color matching is accurate.

The third point: add a little dilute agent to improve the luster of the ink film.

Add a little dilute agent in the ink, instead of adding ink, can not add gold oil, can improve the luster of the printing ink film. If gold is added, the content of resin in the ink will increase and the viscosity will increase, which will unfavorably increase the printing speed, and may cause the ink on the printed matter to return to stickiness.

The fourth point: Use diluting agent to lighten the ink color.

In order to lighten the ink color, white ink is usually added to the color ink, but this is wrong. Adding white ink to the color ink not only changes the hue of the ink, but also reduces the color and vividness of the original color ink. The correct method is to use diluting agents to lighten the color.

Fifth point: Correct use of gravure printing of two gold inks.

There are two kinds of gravure printing inks: one is the silver paste + the connecting resin solution + transparent yellow dye is made by high-speed stirring, the other is the user's on-the-spot modulation with copper gold powder + gold transfer oil. The former golden ink is evenly printed after the latter, but lacks the brightness and gloss of the metal, so it is called false gold. Although the later golden ink has poor uniformity, it can have metallic luster and brightness, and has a strong three-dimensional effect. In short, these two kinds of gold ink can not be ground, the former kind of gold ink is not resistant to granules, easy to decolorize and leak silver after a long time. After the kind of gold ink solvent should not be added, adding more solvent will accelerate the precipitation of copper powder. The former kind of gold ink thinner should be added with 30%-50% diluting agent, or can be added with clear yellow ink or better transparency ink to adjust. The latter kind of copper powder due to heavier should not add more solvent in the gold transfer oil, if necessary, can be used dilute agent to adjust, you can also use two kinds of gold ink mixed on site. However, according to the required amount of modulation, it is not appropriate to store for a long time. You can use uniform ink roller and agitator when printing.

Sixth Point: Matters needing attention when using transparent ink.

Transparent inks are required for printed aluminum foils, aluminum foils, and pearlescent films. The clear ink is made of dye. It looks very thin, but its actual viscosity is high. In the use of transparent ink, such as adding too little diluent, not only will increase the printing cost, but also does not help improve the printing speed; transparent ink solvent resistance is very large, but with the increase in the amount of solvent, the color difference is also very large Hue can add a small amount of ordinary color ink to adjust.

Seventh Point: Matters needing attention when using pearl ink.

Pearlescent ink pigments are made from natural mica stone. The production of printing inks should not be grinded. The addition of pearlescent inks can present pearlescent colors. If you use an interference series of pearlescent pigments, the print will have a discoloration effect from different angles. Because the pearlescent pigment is scale-like, the pearlescent effect of the pearlescent pigment is related to the fineness of the pigment, the fine coarse pearlescent effect is good, and the uniformity of fineness coloration is good. However, the base color ink used to adjust the pearlescent ink is better in transparency, and if it is strong, it will weaken the pearlescent effect.

Eighth point: The magical use of fluorescent security ink.

Fluorescent anti-counterfeiting inks do not need to be grinded, as long as the selected fluorescent pigments and lightening agents are evenly mixed to print, and it is not suitable to use gold modulation oil because the content of gold oleoresin is too high and the adaptability of the scraper is poor, which is not only unfavorable for high speed. For printing, prints are also easy to stick back.