Book Design

[Printing separately] Digital printing vs offset printing vs spot color printing Printing color differences

Digital Printing vs Offset vs Spot Color Printing – How Should You Choose? What are the different printing effects of the three printing methods commonly used in Hong Kong? An article in 3 minutes will take you to know the difference of printing and become a printing expert! Digital printing (fastest, can be done in small quantities) Digital printing is the digitization of printing technology. It generally refers to part or all of the digitization of the whole process. For example: laser phototypesetting, remote plate transfer, digital proofing, computer-to-plate making, digital workflow, printing factory ERP, etc. all belong to the category of digital printing. Digital printing is a new printing method that directly prints computer files on paper, which is different from the cumbersome process of traditional printing. Its characteristics: one-piece printing, no plate making, immediate waiting, real-time error correction, variable printing, and on-demand printing. Digital printing is a comprehensive technology developed on the basis of printing technology. It uses electronic text as a carrier and transmits it to digital printing equipment through the network to achieve direct printing. The biggest feature of printing production process is that there is no printing plate and information is variable, covering various technical fields such as printing, electronics, computer, network, communication and so on. Digital printing is full digital information transmission, eliminating the need for film and printing plates in the machine version. The information of digital prints is 100% variable. Digital printing is the process of directly converting digital information into printed matter using a digital printing system. The digital manuscript can be a digital file processed by a digital prepress system, or it can be sourced from the Internet or digital media. Digital printing can realize print output anytime, anywhere, remotely, without time and space constraints. The value of digital printing comes from the service provided to the customer, rather than the inherent cost of the manufacturer. According to the imaging mechanism, digital printing is divided into electrostatic imaging, inkjet imaging, electrocoagulation imaging, thermal transfer imaging, magnetic recording imaging and so on. On the market, digital printing machines with electrostatic imaging and inkjet imaging are the mainstream. Because digital printing does not require the complicated process of traditional offset printing, it only needs to send the finished product from the computer to the printing machine. Therefore, traditional printing cannot be achieved in urgent printing, variable printing, and on-demand printing. Therefore, the digital printing industry really caters to the ever-changing demand for rapid printing of commercial prints. Offset printing (cheaper, meets most needs) Offset printing is a type of lithographic printing. Simply speaking, offset printing is a printing method in which the graphics and text on the printing plate are transferred to the substrate with the help of rubber (blanket). It is the existence of the blanket that gives this printing method its name. The blanket plays an irreplaceable role in printing, such as: it can make up for the unevenness of the substrate surface, make the ink transfer fully, and it can reduce the water on the printing plate (see the role of water in printing later). ) to the substrate, etc. The above is just a general concept. The offset printing that we usually say now may have a narrower scope, that is, the lithographic printing method with three cylinders (printing plate, blanket, and embossing). In the south of our country, this printing method is called For offset printing. Offset printing adopts fully automatic assembly line operation, computer automatic control, printing tower drum rolling printing, and conveyor belt automatically transmits discs. In order to avoid mixing different kinds of discs, add BASLER R2 to the input end to automatically detect. Offset printing is mainly based on a white background and different ratios of the four main basic colors (black, blue, red, yellow) to deploy a variety of printing colors. The shades of various colors are determined by the length of the printing time, the printing pressure, and the printing temperature. The longer the printing time, the darker the color; the greater the printing pressure, the darker the color; and the higher the printing temperature, the darker the color. Compared with screen printing, offset printing has the characteristics of high efficiency, high quality and low cost. efficient. Offset printing adopts automatic flow operation, automatic color matching by machine, automatic computer monitoring, high speed, and can print 15,000 pieces per hour. High quality. Computer fine-tuning, accurate color matching, high position accuracy. Color effect is good. Printing varnish, glossy color, smooth surface, clear printing effect, not easy to fade. low cost. Offset printing adopts roller printing, the printing layer is thin, and the oil is used less. Spot color printing (the most expensive, the strictest color) 1. Meaning Four-color printing generally refers to the printing process that uses yellow, magenta, cyan three primary color inks and black ink to reproduce various colors of color originals; while spot color printing refers to Yellow, magenta, and cyan are used. A printing process in which other color inks other than black ink and four-color ink are used to reproduce the original color. In packaging printing, spot color printing is often used to print large-area background colors. 2. Scope of process application Spot color printing: The covers of packaging products or books are often composed of uniform color blocks of different colors or regular gradient color blocks and text. These color blocks and text can be divided into colors and then overprinted with four primary color inks It is also possible to mix spot color inks, and then print only a certain spot color ink at the same color block. In the case of comprehensively considering improving the printing quality and saving the number of overprints, sometimes it is necessary to use spot color printing. Four-color printing: photos taken by color photography that reflect the colorful changes in nature, color art works of painters or other pictures containing many different colors, for technical requirements or economic benefits Considering that the color separation must be scanned by an electronic color separation machine or a color desktop system, and then copied by a four-color printing process. 3. The ink prepared by visual effect spot color printing is obtained according to the principle of subtractive color mixing of color materials. Large ink volume, when the thickness of the ink layer on the layout is large, the change of the thickness of the ink layer will be less sensitive to color changes, so it is easier to obtain a uniform and thick printing effect. 4. Application angle Product quality angle: When printing a large area of light-colored uniform color blocks, it is usually used to add a medium light agent to the original ink to prepare the spot color ink, and then perform solid printing, so that the ink layer is thicker and easier to obtain. Even color, thick effect. If you use a four-color printing process, you must use low-count flat screen dots. However, the flat screen dots with low percentages are easily caused by tiny sand grains or slightly poor air extraction during printing, resulting in smaller dots in individual parts, resulting in uneven ink color: it is easy to water too much for the layout during printing. The accumulation of paper powder on the printing plate and the blanket, and the low smoothness of the paper cause the poor ink transfer of the small dots. This results in lightening of the ink color and uneven ink color. 5. From the point of view of economic benefits, it mainly depends on whether the process of using spot color printing can save the number of overprints. Because reducing the number of overprints can save both printing costs and pre-press production costs. Inquire about printing services now

書刊設計教學

Brochure/Book Design Teaching – Important Elements

Picture albums generally use paper materials as the carrier, with culture and products as the dissemination content, which is a direct and effective form of publicity. So how to design a beautiful and practical book? Let's talk about fonts, typography, color matching, white space, background color, and the combination of text and images. 1. Book Design Teaching – Several fonts that can stand up to scrutiny are: 1. Song style (Biao Song, Shu Song, Da Song, Zhong Song, Imitation Song, Fine Imitation Song) The development of Song style has gone through several dynasties, and Song style has no Picky, dignified and beautiful, elegant temperament, combination of rigidity and softness, delicate and delicate, beautiful and beautiful. Black body is a modern font, which is firm and stable, has a sense of strength, and is eye-catching and beautiful. The isometric body is exquisite and attractive, and it feels petty, low-key and not vulgar, and it is a fact of its own. 2. Hei body (medium black, flat black, fine black, big black) 3. Kai type (Zhong Kai, big black, special Kai) Kai type is an extremely classic font, after more than a thousand years of baptism of Chinese civilization and countless calligraphy masters. Tempered, italics have become very mature, every word can stand up to scrutiny, and the cultural temperament is very strong, which can be used in picture albums full of cultural sense and traditional flavor. 4. Isoline (medium line, thin line) 5. Round black body (medium circle, thin circle, extra circle) 6. Of course, there are also some good fonts that are not included, such as Fangzheng Fanxiu style and Handing’s traditional style blackened. In addition, we should avoid using some fonts, such as the strange fonts in Wending's new font file, which are vulgar and low-level; finally we should avoid computer fonts such as Variety Style, Zhonghangshu, Lishu, etc., which are rough and ugly, and have a temperament. very poor. 2. Typesetting In the album design, the layout design is very important. Only with excellent typesetting can a high-quality album be printed. However, the difficulty in the layout of the album is that we do not fill the content (set of templates) according to the already designed layout, but lay out the layout according to the specific content. When the number of pictures in the layout is different, the composition of the layout will be Different. Generally speaking, the basic types of album layouts are: grid type, full layout type, free type, upper and lower division type, left and right division type, central axis type, inclined type, triangle type, curve type, etc. Each type has its own advantages and characteristics: 3. The application principle of color matching is: "overall coordination, partial contrast". That is: the overall color effect should be harmonious, only some small areas can have some strong color contrast. In the use of color, different main colors can be used according to the needs of the content, such as warm colors, that is, the combination of red, orange, yellow, ochre and other colors. The use of this tone can make the picture present a warm, warm and warm atmosphere. Cool colors, that is, the combination of cyan, green, blue and other colors. The use of this color tone presents a calm, cool and elegant atmosphere. Contrasting tones, that is, matching colors with completely opposite chromaticity in the same space. For example: red and green, yellow and purple, orange and blue, etc. The combination of this color can produce a strong visual effect, giving people a bright, bright and festive feeling. Of course, contrasting shades, if used poorly, can backfire and have a cheesy, garish effect. This is to grasp the important principle of "major harmony, small contrast", that is, the overall tone should be a unified and harmonious part where there can be some small strong contrasts. (adobe color wheel) Finally, the background color (background color) of the album should be considered dark and light. Here we borrow a term from photography, that is, "high-key" and "low-key". The light background is called high-key; the dark background is called Low-key. If the background color is dark, the color of the text should be light, and the light-colored content (text or pictures) should be contrasted with a dark background. On the contrary, the color of the text with a light background should be darker, and the dark background should be contrasted with a light-colored background. The content (text or pictures) of this kind of change in depth is called "brightness change" in color science. On some homepages, the background color is black, but the text also uses a darker color, the brightness of the color is relatively close, and the reader is reading The eyes will feel very hard when it is on, which will affect the reading effect. Of course, the brightness of the colors should not change too much, otherwise the brightness contrast on the screen will be too strong, which will also make the readers' eyes unbearable. Fourth, leave blank in the picture book The same is true for dealing with pictures in design. Appropriately leaving blank space is actually injecting vitality into the album. Boldly leaving large areas and blanks, because appropriate and reasonable blanks can convey the designer’s elegant aesthetic taste and break the rigidity The dull routine makes the picture book transparent, cheerful, jumping, and fresh, creating a brisk and pleasant stimulation for the reader visually, and the eyesight is relaxed and rested. Of course, large blanks should not be used indiscriminately. , there are transitions, so as not to form for the sake of form, resulting in a blank page. Blank can not simply be understood as blank, blank does not mean nothing, just blank, but with less content or a single Color to set off the main part of the photo. In addition, the style required to create a set of pictures is generally realized in the blank area, so some other necessary elements, such as text, should be added to this blank area. The list layout is suitable for information sorting and summarization, product introduction, and more text. If there are many pictures, you can use 4-corner arrangement, 3-corner arrangement, and side-by-side arrangement. If you want to display the picture in a larger size, you can Use unilateral arrangement. The text is generally arranged beside and below the picture, and the height or width of the picture is the same. The picture with text nearby is smaller, and the picture without text nearby is larger. And the picture with less text Larger, pictures with more text are smaller. Picture and text list: This method is used when there is a lot of picture information. There are no pictures with a large area in the layout, and the pictures are small. Each picture is matched with a text paragraph aligned with it, etc. Width or equal height arrangement. In the graphic list form, the text information is arranged below the picture or left and right. The text is of equal width when it is below, and the same height when it is on the left and right.

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