Print color difference problem has been plagued by printers, color difference problem can be effectively controlled, is to reflect product quality, reputation and operator master skill level of a measure rod, therefore, it is each printer to pay attention to the problem, but also on the printing road to a higher level of the step, quality and service is the lifeblood of an enterprise. Shijiazhuang printing factory

Let's pay attention to the color difference of lift-up flaps book. Some prints have the same color of the same batch of products, but there is a color difference with the color of the sample, and there is a color difference in the same batch of colors, some are consistent with the sample, but some are inconsistent with the sample.

1, human factors: not related to the skill level of the captain, but related to the responsibility of the captain, since the color of the same batch can be consistent, indicating that the skill level of the captain is not low, but not the same can be printed down is the responsibility of the captain, and does not exclude the responsibility of the signer.

2, paper color: Different whiteness paper appears to have a different impact on the color of the printed ink layer, because different whiteness is equal to adding different black, red, blue, or yellow to the ink, so although the amount of ink is the same in printing, the hue does not change, but in fact the ink has a certain transparency, then the color will also be presented with the whiteness of the paper. Because the weight, size and specifications are the same, but the production batch and date are different, the whiteness of the paper will be different, so try to choose the paper with the same whiteness as the printing paper of the same product.

3. Gloss and smoothness of paper: The gloss of printed matter depends on the gloss and smoothness of the paper, offset color printing is when the light incident on the surface of the paper, the light is reflected to the retina of the human eye, and the color is seen through the light and action of the color sensing cells, if the gloss and smoothness of the paper is higher, the main color light saturation, if the surface of the paper is rough, the gloss is low, it will produce diffuse reflection. It will reduce the saturation of the main color light, so that our human eyes observe the color of the print feeling lighter, the same amount of ink is measured with a densitometer, the paper with high smoothness, the density value is high, and the other way around is low.

4, paper surface treatment: Printed matter through peritoneum, glazing, calendering, oil, printing and other surface processing, there will be different degrees of hue changes, some of these changes are physical changes, some are chemical changes, physical changes are mainly reflected in the product surface increase specular reflection, which has a certain impact on color density, chemical changes mainly from peritoneum, glazing oil, UV oil and so on. This material contains a variety of solvents, which will cause a chemical reaction in the color of the printing ink layer and cause a change in color. Therefore, when printing the latter process, or consider these chemical and physical reactions into it.

There are many factors that form the lift-up flaps book color difference, and there are more than these control methods, which requires us to constantly explore and accumulate in the printing operation, and it is also conducive to the improvement of our own ability, the higher the customer's requirements for printed matter, for us, it is pressure and power.

lift-up flaps book https://www.thpkgg.com/Lift-up-flaps-book.html