The most popular boutique Book prepress printing b

2022-07-29
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Pre press, printing and post press views of fine books

what is a fine book? My understanding is that excellent books should be practical, collectable and able to attract readers; In terms of design, unique style, practical and beautiful; Printed, capable of mass production; In terms of quality, it should withstand the review of printing competitions at home and abroad. The realization of high-quality printing requires close cooperation between the overall design, original quality, equipment accuracy, process technology and other aspects

prepress/printing

◆ principle: select appropriate printing methods according to different product contents and uses

1. FM printing

features: the image level is expressed by point density without adding; Avoid the collision caused by adding (i.e. the so-called moire or rose pattern); It can open the layer of the dark color part of the image

disadvantages: the reducibility of flat place is not as good as that of amplitude modulation, so it is not suitable for light tone and smooth pictures, such as morning fog, white or light skin or non textured pictures

applicability: it is suitable for products with many edges and high sharpness, such as oil paintings with images of steel, metal and rock and landscape figures with strong colors; It is suitable for products with more image lines, such as clothes, curtains and fabrics; Suitable for simulated printing products, such as ancient paintings and calligraphy

2. High line printing

features: the printing image is delicate and soft, which can fully express the image and meticulous place of the image

disadvantages: when high-speed printing is adopted, it is easy to form a paste plate when the midpoint of the printing process is seriously enlarged, and the high light and dark tone are easy to cause the loss of image levels

applicability: it is necessary to determine whether high-speed printing is required according to the content and purpose of the product; It is suitable for high-end products with fine performance and close view, such as picture books, advertisements, trademarks, etc

3. High fidelity printing

features: compared with ordinary four colors, it has a wider range of color gamut reproduction and can more realistically reflect natural colors

disadvantages: high requirements for equipment, requiring six or more color printing machines and high printing accuracy; The printing cost is high, such as the increase of printing plate, ink cost and color separation software

applicability: it is applicable to high simulation products, such as calligraphy and painting replication, copy of isolated copy, etc; It is suitable for commercial printing of advertising, such as wall calendar, commodity packaging and other products

binding/post press

◆ principle: achieve the coordination of materials and processes, and use various binding and post press processes to achieve the desired results

1. Cooperation between process and materials

cooperation between hot stamping process and shell surface materials: good hot stamping effect can be obtained on leather materials, leather filling materials, paper and rubber coated surfaces. If the surface is rough, the hot stamping is easy to fall off. If the hot stamping font is too small, it is easy to paste the words. Therefore, during hot stamping, attention should be paid to the selection of shell materials and the size of hot stamping font

combination of over gluing process and ink: over gluing on the surface of metal ink, due to the characteristics of metal ink itself, it is easy to separate the film after over gluing. Therefore, attention should be paid to avoid this problem when over gluing on a large area of metal ink surface

automatic production of equipment and coordination of materials: in the production of hardcover books, if leather is used as shell fabric, the machine production speed is fast, the setting time is short, and the setting effect is not ideal. It is recommended to manually put on the shell or use other fabrics

2. Application of PUR binding technology

features: strong adhesion and long storage time; Strong adaptability, can be used in high or low temperature environment; Good flexibility, easy to spread out and read; Protect the environment, no VOC (volatile organic matter) is produced, and no environmental pollution is caused. As shown in the following figure on the left, the books produced with pur adhesive are easy to read

applicability: it is widely used. It has good adhesion to the printing pieces after UV, varnish, film coating and other surface treatments

3. Application of flocking technology

features: vivid, strong three-dimensional sense, hand feeling to record historical logs; It is soft with bright colors and patterns, and flocking is not easy to fall off

precautions under general conditions: paper surface, glue passing surface, leather filling material and leather material are suitable for flocking; Fabrics with too deep grain are not suitable for flocking due to their poor adhesion; UV surface is not suitable for flocking and will not stick firmly

4. Application of other process technologies

other applications of post press process technologies such as embossing, local UV, glitter powder, glass beads, luminous ink, fragrance ink, wrinkle oil, sanding effect, etc. will not be introduced one by one

material use

◆ principle: it needs to be used selectively according to material characteristics and product design

1. Selection of text paper

for products with high printing quality requirements such as picture books, the number of new projects has increased from 44 to 64. Generally, matte coated paper is selected (so that it will not be very dazzling when reading); For ordinary reading materials with more text such as textbooks, book paper (offset paper) is generally used; For classical books and other written books, beige paper is generally used, which is of high grade; Rice paper printing can be used for products with high simulation requirements, such as isolated copies and copies of famous paintings

2. Selection of cover paper

for high-end hardcover products, some leather materials can be used as the shell surface (but the specific fabric should be determined according to the product content and design style). For mid-range hardcover products, you can use leather or cloth as shell surface. For ordinary hardcover products, coated paper can be used

3. The practicality of the product should be considered in the use of materials.

for different products, special materials should be selected according to their functions

4. The use of materials should take into account environmental protection

with people's attention to environmental protection, environmental protection printing will become the development direction of printing in the future, such as the use of FSC certified paper, soybean environmental protection ink, alcohol-free fountain solution, water-based varnish and the introduction of water-based film covering technology

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