Points to note for spot color printing inks

With the development of society, people's aesthetic power is growing, color printing products customers demand more and more of reproduction. In order to improve the quality of printed products, printing companies usually need to use spot color inks when printing packaging products and commercial printing products, in order to ensure that the color of printed matter can be faithfully reproduced perfectly, and accurately and skillfully adjust the required spot color. Ink, printing operators should be proficient in the methods, procedures, and precautions for dispensing spot colors.

Spot color ink preparation considerations

1. Requirements for ambient light source

When blending ink, the color temperature of the ambient light source should be 6500K, and the color rendering index Ra should be greater than 80, that is, the light source specified by international standards should be used as much as possible. Otherwise, color cast will occur when observing the ink sample, which will be misleading and affect the color matching effect.

2. The principle of selection of ink

According to the principle of subtractive color method, the minimum amount of ink should be used to adjust the required spot color ink, that is, the spot color that can be adjusted by two kinds of inks, preferably without using three kinds of inks, to avoid the type of ink used. More, reduce the brightness of the spot color ink, and ultimately affect the gloss and vividness of the printed matter. In addition, when formulating a certain color ink, due to the difference in the properties of the inks produced by different ink manufacturers, the primary inks produced by the same ink manufacturer should be selected as much as possible to avoid the difficulty of tracking the quality of the printed products and improper mixing of the inks. The economic loss caused.

3. Common sample method

There are two commonly used methods of sample matching, namely the finger extension ink sample method and the scraping sample method. The finger-expanding ink sample method is to apply a small bean-like ink on the paper, and use the finger to extend the ink into a layer of ink which is substantially close to the printing, and then judge the ink-adjusting effect by comparing with the standard color. It should be noted that the color of the sample will be more beautiful than the color of the printed sample. This is because the sample has no printing pressure and its ink layer is thick and thick.

The scraping method refers to uniformly applying the spot color ink to a rectangular paper with a small ink knife, and then scraping the ink into a thin layer with a doctor blade, and then judging the difference between the adjusted ink color and the standard ink color by the naked eye. Observe the reflected color of the thin layer of ink, check the color of the ink; observe the color of the thicker part of the ink layer in the scraping sample, check the ink color of the ink; and scratch the color of the ink to observe the color of the ink layer. The background color of the ink. Among them, it is easy to find the difference in ink color by checking the ink background color, which is very effective for judging the blending effect of the dark ink.

4. Record to be detailed

Do a small amount of matching color ink blending ratio, ink model, ink production batch number, ink manufacturer, additive dosage and which batch of printing products used for the batch color printing, can be officially mass-produced spot color ink To track the quality of the ink and provide a reference for the next repeated printing of the product.

5. The amount of spot color ink to be adjusted should be appropriate

The amount of spot color ink to be adjusted should meet the needs of the current batch of products and have a slight surplus, so as to avoid the lack of ink quantity and then make up the distribution, which causes the hue of the same batch of products to be different, affecting the printing quality and causing waste of ink.

Concealer

Concealer that is too light or too dense will make your makeup look unnatural. Therefore, you should choose different concealer according to your skin type to make your skin appear healthy. Paste and strip concealer have better covering effect, but the operation is more difficult; The concealer with low concealing ability can make the makeup natural because of its fresh texture. Generally, concealer is solid, but its viscosity is different. According to your own needs, you can choose to use large areas or local products.

Concealer,Private Label Concealer,Concealer Shade Finder,High Quality Concealer

Suzhou Yimeijia368 Biological Technology Co.,Ltd. , https://www.szymjbeauty.com