The distance from design to printing and packaging products is probably the distance of the following basic knowledge. Today, Jinan printing will share with you some basic knowledge about printing and packaging to help you smoothly realize the seamless connection between production and design.
The purpose of bleeding is to ensure the accuracy of die cutting. Ordinary paper is generally 3mm and corrugated is generally 5-7mm. Due to the mistakes of design and composition, the bleeding can be reduced, but it must be more than 1.5mm.
2. Small size of gold and silver stamping
It is generally guaranteed to be 0.3mm, and it can be between 0.1-0.2 if the technology is good.
3 large size paper, positive size paper and special size paper
Large paper refers to the paper with the size of 1194 * 889 and the positive degree of 1092 * 787. Special paper refers to the paper with special specifications. Generally, paper mills cut the paper into large positive degrees, or cut the paper with special specifications according to the needs of customers.
In addition, the magnanimity after the smooth edge of the printing factory is generally 1190 * 880 and the positive degree is 1090 * 780. If the design is wrong or the layout is required to be special, you must say hello to the factory in advance, otherwise it will be opened according to the said size.
4 how many lines are used for offset printing:
Generally 175 lines. There are also as low as 150 lines or as high as 250 lines.
5 spot color and four colors:
Spot color refers to a specific color. During printing, spot color is not the color synthesized by printing C, m, y and K, but the color printed with a specific ink. Spot color inks are premixed by a printing factory or produced by an ink factory. For each spot color of printed matter, there is a special color plate corresponding to it during printing. Use spot color to make the color more accurate. Such as: special gold, special silver, etc.
Four colors refer to the printing color of CMYK mode.
6 resolution for printing:
Generally 300dpi. Of course, the higher, the clearer.
7 flexo printing:
At present, China's flexographic products are at a very low level. The quality of printed products is mainly low, coarse and simple, and the fine multi-color overprint is not very good; At the same time, the scope of application is small, mainly printing text lines and field, and the dot live printing is not very much.
That is to do overprint and edge repair. Offset printing is generally between 0.04-0.07mm. According to the flexo printing machine, it is generally large.
9 are all black stamped with other colors
Not necessarily. Depending on the area of black, generally the text is directly overprinted. In case of a large area, it is the same as trapping.
10 what to do when you encounter a large area of black
A large area of black is padded with a color between 30-40 blue, or a similar dark color of 30-40, because in theory, black is equal to black.
The purpose is to prevent insufficient black printing and small white spots.
What is film?
Take black-and-white film as an example. The English name of film is film, which means film or film. It's similar to the film used for photography. It is used as an important medium for recording images. The color separation of pictures and texts is made, and then the output machine transmits your divided colors to films one by one. The color on each film is single. For example, if there are three colors of CMY, three monochrome films need to be produced.
12 bar code
There are ean (13 bits, one bit is automatically generated) and UPC (12 bits).
There is a special bar code tapping software. The bar code magnification factor is between 80% - 200%. The blank area on the left and right of the barcode is 3.63mm on the left and 2.31mm on the right. The blank area can only be large but not small. It is the same as that on the left and right of UPC, which is greater than 2.97mm.
There should be a large contrast in color matching. Try to use black bars on a white background, and a white pad should be placed under the gold and silver cardboard. If you want to shorten the bar code, keep at least two-thirds of the original proportion. The font is not mandatory and is recommended. The placement position depends on the situation, and the placement area shall not be less than 8mm from the indentation line.
13 printing effect and subsequent processing effect
Here are some common effects:
A. Frosting: it is treated into an uneven feeling of sandstone particles.
B. Ironing: there are many ironing things that are easy to see, such as bronzing, silver ironing, laser ironing and so on.
C. Glazing: it is a kind of post-processing to prevent the abrasion of pictures and texts and make the products more beautiful and have a certain waterproof function. There are ordinary varnish, UV varnish makes the products have a fresh and young effect, and UV dumb oil makes the products elegant. UV can cooperate with film covering to achieve extraordinary results.
D. Concavo convex: it gives a three-dimensional effect to simple graphics and texts. There is a distinction between ordinary and three-dimensional, and the three-dimensional effect is more beautiful.
E: Film covering: the product surface is covered with a thin film to achieve the effect of protecting graphics and texts from water and beauty. There are light film and dumb film.
When designing, we should not only consider bleeding, but also consider the longitudinal bite of the machine, and pay attention to the grain of paper when placing an order. When a color is almost full, please fill the die-cut part with this color as far as possible to prevent ghosts. If the paper allows, please make a color band of not less than 4mm for each color. Add a color code to each color, and the close-up is a spot color, so that others can see it clearly.
In addition, it should be noted that although it is relatively simple, it is very important, and people often make such mistakes: do not overprint white pictures and texts, and remember to turn the curve.
The basic knowledge of printing and packaging and printing precautions are shared here today. I hope it can be helpful to our daily work. If you encounter any problems in daily production, you are also welcome to click http://www.703248.com Tell us, let's talk together.濟南印刷廠講解的內容 更多的內容 請咨詢公司官網http://www.703248.com/