Screen printing prepress processing system screen printing pre-processing system With the rapid development of high technology, screen printing and Other printing methods, the introduction of computer technology in the field of prepress plate making technology, so that graphics and text combinations, color separation, direct output Platemaking is completed at one time. In recent years, prepress processing for screen printing has enabled desktop systems, as well as rapid and non-polluting printing and post-press processing, just like offset printing. This has made it possible to manufacture processed screen printing products only in factories of considerable size in the past. It can now be completed in street shops. For example, a digital camera can be used to print color images with a photocopier, or use a desktop computer image combination processing system to combine the natural landscape with any photo into a new image. After being printed by a laser printer, the T-shirt can be transferred. On other vessels, the entire printing process takes less than ten minutes. Through these computerized, fast, and miniaturized equipment, the entire product production process, through a transparent window, is presented to consumers in order to attract more customers. This processing method is just like the rapid printing that has risen in large and medium-sized cities in the country, forming a new hot industry.
In terms of screen printing and prepress processing, the Chinese mainland has developed a so-called “color screen printing and creative color separation systemâ€. It is a set of computer-centric, integrated text-to-plate, graphics and image input, image color separation screening, layout design, deformation processing creative design, text and image full-page imposition in one, can be directly output screen made of screen printing plate Printing and pre-processing system. The plate making system is mainly composed of the following four parts:
1, text image input, editing processor.
2, image color separation, color correction, screening system.
3, the combination of text and image imposition system, which can be imposed on the entire page according to layout requirements, for further editing, complete the layout, and determine the output layout of the output layout according to the printing situation.
4, layout output system, the system has a variety of output methods: can be set by the laser imagesetter, or electrical extension; can also use a laser printer output, can be a color or monochrome printer output; can also pass through the plotter or color inkjet printer To output. According to the above functions, the screen printing pre-press processing system can be configured into the following three types of different prices (which can also be configured according to the user's specific situation), that is, simple type (popular type), mid-range type, and high-end type.
Screen Printing Computer Direct Plate CTP
In the late 1990s, with the continuous maturation of computerized digital processing technology, a major technological revolution was taking place in the field of screen printing plate making technology. This is the reason why computer-to-plate (CTP) computer-to-plate technology is also known as digital. Direct plate method. The CTP process has been applied in offset printing years earlier than screen printing. The application of the screen printing industry is the display of this technology and equipment at the International Network Printing Exhibition in the United States and Europe in the past two years. It is the migration of inkjet Inkjet Process technology to screen printing CTP plates.
CTP screen printing has the following features:
(1) Reduce the plate making process and achieve the goal of rapid plate making.
(2) Save film, because no film is needed, so as to prevent the quality problems caused by film wear and network level loss.
(3) Screen positioning can be performed automatically for multicolor screen printing.
(4) The inkjet coating does not require a special photosensitive adhesive, and the commonly used photosensitive adhesive is suitable.
(5) The screen version of various meshes can be done.
(6) All kinds of frame, aluminum alloy frame and wooden frame can be used.
(7) Plate making up to 66x96.5 cm.
Screen printing CTP direct plate making principle is the use of computer digital processing technology to design the required screen printing image, after modification, finalized and stored in the computer. At the time of plate making, a laser ink jet printer was used to print the image on a screen previously coated with a photosensitive resin. This screen is called a pre-printed version (screen printing PS version). The ink-receiving image on the screen acts as a film or a cover film, and then the entire screen is exposed with ultraviolet light (stencil printing). The ink is partially exposed to ultraviolet light, and no chemical reaction occurs, resulting in a difference in solubility. After the same as the traditional photoengraving principle, exposure, development and imaging imaging plate. Please refer to screen printing CTP plate making process diagram.
Screen printing CTP plate, screen printing presensitized photosensitive emulsion used in the photosensitive layer, the general traditional all kinds of screen printing with photosensitive adhesive can be used. The requirements for laser ink jet ink are many, but the main two points are:
(1) The ink density and ink ejection amount are based on the final image optical density of 3.0 or more.
(2) The connecting resin for ink is preferably water-soluble so that water can be removed during development. However, if the photoresist is positive, the ink-based resin should be oil-soluble. Now Polaroid and Gerber Technologies of the United States have all developed such CTP platesetters.
The United States Gerber technology company developed the computer digital without film CTP platemaking machine. The plate-making machine can be connected with a personal computer. The necessary plate-making graphics and characters are input to the disk, and the disk is placed on the plate-making machine. After the plate-making machine is started, the computer-controlled ink-jet device mounted on the machine will follow the input. The image text is automatically sprayed on the screen that has been coated with photoresist. Injected by the ink jet device, of course, is not ink, but a special coating material, which can play exactly the same role as the traditional film printing.
In addition to the Gerber company in the United States, Denmark has also successfully developed a digital computer-less film CTP platemaking machine, the development of the machine is the Danish Mografa (MOGRAFA) company. It is different from the United States Gerber plate making machine in that the output graphic uses a laser-generated spot exposure method, and the computer-generated graphic information is directly hit on a screen plate that has been coated with a good photoresist to expose the printing plate, and then rinsed. Developed screen printing plate. This kind of direct plate making method can also save the costs of film, medicine, and amplification, and avoid the undesirable phenomena such as dust pollution and blowholes generated in the conventional plate making process.
The screen printing plate adopts FM screening technology, because FM screening will not produce moiré. Compared with traditional AM screening, the printed color prints are more detailed and will obviously be better than AM in the same printing conditions. Web technology products. Therefore, the emergence of FM screening technology is known as a revolution in screening technology.
The difference between FM screening technology and AM screening technology lies in that FM screening uses fixed-size ink dots to represent the depth of color in the dots of the ink-dotted dots, dark ink dots and dark ink dots. In this method, due to the cancellation of the small squares, there is no frequency interference, so it is no longer haunted by the moire. Because this method has no change in the size of ink dots, the only change is the frequency of dots, so it is called FM screening method.
FM screening advantages:
(1) Does not produce moire. According to the theory of plate making process, FM screening will not produce moire that is easy to appear in color overlay. Because there is no screen angle problem for FM network points, it is randomly distributed and there is no regular pattern, and multiple colors do not overlap.
(2) High definition. Sharpness is an important indicator of product quality. The use of FM outlets is more effective than traditional outlets, allowing the replica to further improve quality. After many tests, the smaller the screen, the cleaner and more delicate the screen.
(3) The copying effect is good. FM screening and copying is the best reflection of the intermediate tone level, and there is no problem of density jump caused by the convergence of the dots at the midtones. The tone is too natural and harmonious. This is particularly important for the reproduction of characters and still life.
(4) is not limited by the screen angle. The FM screening process does not have a screen angle restriction, which creates conditions for the special reproduction of multicolor screen printing. For example: metal color, jewel color, Chinese painting, etc., and can be printed through four or more colors, expand the range of color reproduction of printed materials, and perform high-fidelity copy printing.
In terms of screen printing and prepress processing, the Chinese mainland has developed a so-called “color screen printing and creative color separation systemâ€. It is a set of computer-centric, integrated text-to-plate, graphics and image input, image color separation screening, layout design, deformation processing creative design, text and image full-page imposition in one, can be directly output screen made of screen printing plate Printing and pre-processing system. The plate making system is mainly composed of the following four parts:
1, text image input, editing processor.
2, image color separation, color correction, screening system.
3, the combination of text and image imposition system, which can be imposed on the entire page according to layout requirements, for further editing, complete the layout, and determine the output layout of the output layout according to the printing situation.
4, layout output system, the system has a variety of output methods: can be set by the laser imagesetter, or electrical extension; can also use a laser printer output, can be a color or monochrome printer output; can also pass through the plotter or color inkjet printer To output. According to the above functions, the screen printing pre-press processing system can be configured into the following three types of different prices (which can also be configured according to the user's specific situation), that is, simple type (popular type), mid-range type, and high-end type.
Screen Printing Computer Direct Plate CTP
In the late 1990s, with the continuous maturation of computerized digital processing technology, a major technological revolution was taking place in the field of screen printing plate making technology. This is the reason why computer-to-plate (CTP) computer-to-plate technology is also known as digital. Direct plate method. The CTP process has been applied in offset printing years earlier than screen printing. The application of the screen printing industry is the display of this technology and equipment at the International Network Printing Exhibition in the United States and Europe in the past two years. It is the migration of inkjet Inkjet Process technology to screen printing CTP plates.
CTP screen printing has the following features:
(1) Reduce the plate making process and achieve the goal of rapid plate making.
(2) Save film, because no film is needed, so as to prevent the quality problems caused by film wear and network level loss.
(3) Screen positioning can be performed automatically for multicolor screen printing.
(4) The inkjet coating does not require a special photosensitive adhesive, and the commonly used photosensitive adhesive is suitable.
(5) The screen version of various meshes can be done.
(6) All kinds of frame, aluminum alloy frame and wooden frame can be used.
(7) Plate making up to 66x96.5 cm.
Screen printing CTP direct plate making principle is the use of computer digital processing technology to design the required screen printing image, after modification, finalized and stored in the computer. At the time of plate making, a laser ink jet printer was used to print the image on a screen previously coated with a photosensitive resin. This screen is called a pre-printed version (screen printing PS version). The ink-receiving image on the screen acts as a film or a cover film, and then the entire screen is exposed with ultraviolet light (stencil printing). The ink is partially exposed to ultraviolet light, and no chemical reaction occurs, resulting in a difference in solubility. After the same as the traditional photoengraving principle, exposure, development and imaging imaging plate. Please refer to screen printing CTP plate making process diagram.
Screen printing CTP plate, screen printing presensitized photosensitive emulsion used in the photosensitive layer, the general traditional all kinds of screen printing with photosensitive adhesive can be used. The requirements for laser ink jet ink are many, but the main two points are:
(1) The ink density and ink ejection amount are based on the final image optical density of 3.0 or more.
(2) The connecting resin for ink is preferably water-soluble so that water can be removed during development. However, if the photoresist is positive, the ink-based resin should be oil-soluble. Now Polaroid and Gerber Technologies of the United States have all developed such CTP platesetters.
The United States Gerber technology company developed the computer digital without film CTP platemaking machine. The plate-making machine can be connected with a personal computer. The necessary plate-making graphics and characters are input to the disk, and the disk is placed on the plate-making machine. After the plate-making machine is started, the computer-controlled ink-jet device mounted on the machine will follow the input. The image text is automatically sprayed on the screen that has been coated with photoresist. Injected by the ink jet device, of course, is not ink, but a special coating material, which can play exactly the same role as the traditional film printing.
In addition to the Gerber company in the United States, Denmark has also successfully developed a digital computer-less film CTP platemaking machine, the development of the machine is the Danish Mografa (MOGRAFA) company. It is different from the United States Gerber plate making machine in that the output graphic uses a laser-generated spot exposure method, and the computer-generated graphic information is directly hit on a screen plate that has been coated with a good photoresist to expose the printing plate, and then rinsed. Developed screen printing plate. This kind of direct plate making method can also save the costs of film, medicine, and amplification, and avoid the undesirable phenomena such as dust pollution and blowholes generated in the conventional plate making process.
The screen printing plate adopts FM screening technology, because FM screening will not produce moiré. Compared with traditional AM screening, the printed color prints are more detailed and will obviously be better than AM in the same printing conditions. Web technology products. Therefore, the emergence of FM screening technology is known as a revolution in screening technology.
The difference between FM screening technology and AM screening technology lies in that FM screening uses fixed-size ink dots to represent the depth of color in the dots of the ink-dotted dots, dark ink dots and dark ink dots. In this method, due to the cancellation of the small squares, there is no frequency interference, so it is no longer haunted by the moire. Because this method has no change in the size of ink dots, the only change is the frequency of dots, so it is called FM screening method.
FM screening advantages:
(1) Does not produce moire. According to the theory of plate making process, FM screening will not produce moire that is easy to appear in color overlay. Because there is no screen angle problem for FM network points, it is randomly distributed and there is no regular pattern, and multiple colors do not overlap.
(2) High definition. Sharpness is an important indicator of product quality. The use of FM outlets is more effective than traditional outlets, allowing the replica to further improve quality. After many tests, the smaller the screen, the cleaner and more delicate the screen.
(3) The copying effect is good. FM screening and copying is the best reflection of the intermediate tone level, and there is no problem of density jump caused by the convergence of the dots at the midtones. The tone is too natural and harmonious. This is particularly important for the reproduction of characters and still life.
(4) is not limited by the screen angle. The FM screening process does not have a screen angle restriction, which creates conditions for the special reproduction of multicolor screen printing. For example: metal color, jewel color, Chinese painting, etc., and can be printed through four or more colors, expand the range of color reproduction of printed materials, and perform high-fidelity copy printing.
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