What do you mean by printing spot colors?

What does spot color printing mean in printing? 5 points

Spot color printing refers to the printing process of copying the original color with inks other than yellow, magenta, cyan and black inks. In packaging printing, spot color printing is often used to print a large area of background color. The cover of packaging products or books and periodicals is often composed of uniform color blocks of different colors or regular gradient blocks and characters. These color blocks and characters can be printed with four primary color inks after color separation, or mixed with spot color inks, and then only one spot color ink is printed on the same color block. In order to improve printing quality and save overprinter time, spot color printing is sometimes used.

The ink prepared by spot color printing is based on the principle of pigment subtractive mixing, with low brightness and high saturation. Spot color blocks with uniform ink color are generally printed on the spot, and the ink amount should be increased appropriately. When the thickness of ink layer in the layout is large, the sensitivity of ink layer thickness change to color change will decrease, so it is easier to obtain uniform and thick printing effect.

What are the meanings of "monochrome printing", "spot color printing" and "monochrome" in the printing industry? Thank you.

I didn't graduate from printing, but I have been engaged in printing for 78 years.

Technical terms don't seem to be easy to understand. Let me tell you something popular.

Monochrome printing generally refers to the printing of one color, that is, no matter what color paper is used for an A4 flyer, all colors are black and all colors are blue when printing, and no other colors are doped. There is no secondary overprint. Even if there is little red dot to be printed on all-black printing, there are two colors. Nor can it be printed in monochrome. Printing with only one color is called monochrome.

Spot color printing generally refers to special inks, such as gold powder ink and silver powder ink. One of the special color matching inks, such as Pan Tong color, can also be called spot color printing. To understand spot color printing, we should start with the color printing that we usually use for the longest time!

Universal color printing (CMYK) is also called four-color printing CMYK-cyan, magenta, yellow and black. In printing, thousands of other colors can usually be reproduced. (Generally, color printing is based on CMYK four colors. Like the color leaflets we usually see, color business cards are based on four colors. )

Spot color-Spot color ink refers to a pre-mixed ink with a specific color (or a special pre-mixed ink), which is used to replace or supplement printing color (CMYK) ink, such as bright orange, green, fluorescent color, metallic gold and silver ink, etc. , can also be bronzed version, concave-convex version, etc. And can also be used as a local glossy plate. It is not a mixture of four colors of CMYK, and you need every spot color when you go to print. [ 1]

Attachment: spot color-refers to printing this color with a specific ink instead of printing CMYK four colors.

I haven't heard much about the word "monochrome", maybe it's because of the dialects in various places. But since you are asking about spot color printing, it is estimated that this also means that "color separation printing" does not include spot color and special printing process.

What does spot color printing mean?

Generally speaking, the color is adjusted to the required formula in advance, and direct printing is spot color. This word is relative to four primary colors printing: red, yellow, blue and black, which express different colors through the change of printing plate dot density.

What do you mean by printing spot colors?

Printing spot color refers to the printing color other than CMYK (cyan, magenta, yellow, black), which is printed with a single color.

How to understand four-color printing and spot-color printing? What is the difference?

In fact, 1 building has explained everything. Basically, that's how four-color and spot-color printing are distinguished. I would like to add that in printing, because of the cost involved, if you can use spot color printing, you can use the prepared spot color ink to print on the computer, which will save a lot of printing costs, plate making costs and film making costs compared with four-color printing. Some printed matter may have a large area or the whole spot color field, so spot color printing will be much better than four-color overprint, so the overall printed color effect will be better than four-color overprint.

What is spot color printing?

Spot color printing

Definition: lyc 1688 forms a special color (which is difficult to achieve in four-color printing) by adjusting the ink ratio.

Features: Spot color printing is saturated in color and has no dot, and its color cannot be achieved by four-color mixing.

Scope of application: a, logo, logo, VI standard color, etc. B, customers specify the required color

Note: Before printing, you need to provide a special ticket for color pursuit, and it is best to provide specific color values.

Folding: Folding a large printed matter to form a beautiful folding, which enhances readability.

Framed? Paste: Spot color printing is saturated in color and has no dot, and its color cannot be achieved by four-color mixing.

Scope of application: Some parts of the product are bonded to form the required shapes, such as envelopes, document bags, packaging boxes, envelopes, handbags and so on.

Flocking: the process of fixing fine wool on printed matter by local gluing, with special effect and outstanding hand feeling.

Scrapping: After adhesive die-cutting, the redundant part of the product will be removed, leaving the genuine product for easy access.

Punching dragon: After being cut by dragon sword, rows of tiny holes are left on the surface of printed matter for easy tearing, such as the seams of stamps, coupons and coupons.

Polishing: coating printed matter with special polishing glue. Poor wear resistance, short light retention time, generally used for printed text.

Gold roll: the process of ironing the incision of books, books and cards with gold materials and special tools, so that the incision of books or books presents a golden color.

Process description: 200 grams of wrinkled special paper is printed in four colors on one side, using flocking (part of paint brush roller)? Combined with UV glazing (wall painting) technology, it has outstanding texture and vivid touch;

Process description: 157g high gloss adhesive, after four-color printing, cut with a fillet cutting plate, and then discharged (the unnecessary part is torn off from the substrate, leaving only the label), which is very convenient and labor-saving;

Technical introduction: 300 grams of hardcover state banquet menu is mounted, and the three-sided incision gold rolling process is adopted to make the whole book magnificent and luxurious. ?

Matters needing attention: the technology of rolling gold mouth is difficult and costly, so it can't be processed in large quantities, and it is only suitable for books with preservation value; In addition, all bronzing colors can be applied to rolling? Gold is the most commonly used technique in mouth-opening.

Difference of spot color printing

Spot color printing: The cover of packaged products or books and periodicals is often composed of uniform color blocks or regular gradient color blocks with different colors and characters. These color blocks and characters can be printed with four primary color inks after color separation, or mixed with spot color inks, and then only one spot color ink is printed on the same color block. In order to improve printing quality and save overprinter time, spot color printing is sometimes used. Four-color printing: For technical requirements or economic benefits, the photos taken by color photography that reflect the colorful color changes in nature, artists' colored works of art or other pictures with many different colors must be scanned and separated by electronic color separator or color desktop system, and then copied by four-color printing technology. From the point of view of product quality, when printing a large area of light-colored uniform color blocks, the spot color ink is usually prepared by adding medium diluent to the original ink, and then printed on the spot, so that the ink layer is thicker and it is easier to get uniform and heavy color effects. If the four-color printing process is adopted, a low percentage of flat dots must be used. However, when printing, the low percentage of flat screen dot is easily caused by fine sand or slightly poor air absorption, which leads to uneven ink color: when printing, it is easy to supply too much water for the layout. The paper powder accumulates on the printing plate and blanket, and the paper smoothness is low, which causes the poor transfer of small dot ink. Therefore, the color of the ink becomes lighter and the color of the ink is uneven. From the perspective of economic benefits, it mainly depends on whether the process of spot color printing can save the number of overprinting. Because reducing the number of overprinting can not only save the printing cost, but also save the cost of prepress production.

The difference between four-color printing and spot-color printing

Four-color printing: printing with three primary colors (yellow, magenta and cyan) and black by subtractive method.

If the original color is reproduced with ink other than yellow, magenta, cyan and black ink, it should be called spot color printing or spot color printing, not four-color printing. Spot color printing refers to the printing process of copying the original color with inks other than yellow, magenta, cyan and black inks.

How to distinguish four-color printing from spot-color printing

Use a magnifying glass of 10 times or more to see where there are colors. If it is 4 colors, you can see 3 colors of dots. If there is only one color, it is spot color.

What's the difference between four-color printing and spot color printing?

Four-color printing is to use CMYK (cyan, magenta, yellow and black) to overprint the color you need, that is, to use the different superposition of these four colors to get the color you need. As long as the color changes gradually, it is all four-color overprint, and four-color printing is dot superposition. You can see hollow points of different colors with a magnifying glass.

Spot color printing is monochrome, without gradient, the pattern is real, and you can't see the dots with a magnifying glass.