The "SEYBOLD BULLETIN" published in June 1999 published an article by the magazine's European journalist KURT.K.WOLF entitled "It's Time to Forget Mesh Shift." The question is raised by digital proofing. At present, practical digital proofing is mostly continuous adjustment, and offset printing is still a screen adjustment point. How should we view the issue of outlets?
The WOLF recalled that since the CEPS (COLOR ELECTRONIC PRERESS SYSTEM) color electronic prepress system was introduced in the 1980s, prepress professional workers have been demanding a digital proofing proof before the separation film is imaged. At the DRUPA'90 printing expo, two companies exhibited such products: Kodak launched APPROVAL; 3M launched DIGITAL MATCHRINT. Although these two types of digital equipment do not accurately represent the same dots as on film, they can meet the requirements of the halftone dots. Since these two devices can only output 2 A2-size proofs per hour, and the device is priced at as much as 250,000 U.S. dollars, users are still hesitant to purchase such devices, and think that DROMALIN proofing has been used in the past. Cheap and practical. Therefore, Cromarin proofing is still the standard that can be accepted by the printing industry, advertisers, prepress companies and printing factories.
Cromarin made a standard by proofing Cromartin proofing. But strictly speaking, it still cannot meet the requirements of traditional proofing or ideal proofing.
Cromarin's proofing was introduced by DuPont in the early 1970s. Initially, it was only used for the third generation of direct-screen electrical extensions that had just been released to check the quality of the scanned color separations. It was difficult for the operator to see the quality of the four-screen color separation sheets on the viewing table. Therefore, the prepress companies usually used all the scanning color separation sheets to make a sample. If the results were not good, then Rescan.
Due to the high requirement of proofing between the prepress companies and the printing factories, Cromartin's proofing film has a high gloss, and the proofs produced on ordinary printing papers are not satisfactory, so they have not been accepted by more customers.
In the 1990s, continuous kiss proofing was cheaper than Kodak's APPROVAL and 3M's DIGITAL MATCHPRINT. The heat transfer systems such as 3M's RAINBOW and DuPont's 4CAST. They can all be tested continuously and at a low price, but the only drawback is that the supplies are expensive.
The biggest winner in digital proofing is undoubtedly the IRIS GRAPHICS of Sai Angel. It uses inkjet technology, can output proofs like photo quality, and supplies are less expensive. IRIS proofing became an industry standard in the 1990s. The IRIS GRAPHICS system has sold 10,000 units, accounting for about 90% of the market share. Although Fujifilm and Polaroid exhibited a digital proofing machine with a dot generator at the DRUPA'95 exhibition, the sales momentum of IRIS has not been undermined. PRESSTEK and CREO have also introduced a new thermal transfer proofing system. It doesn't seem to be known by people yet. Recently, CANON, EPSON, and Hewlett-Packard have introduced color inkjet printers, which not only are inexpensive, but also can deliver professional-level color proofs at the lowest cost, thus becoming a powerful contender for the IRIS proofing system.
Why did we need a mesh point GEROEGE MEISENBACH to invent a rotatable line glass screen in 1881 and use it to decompose images into halftone dots. At the time, converting continuous tone images to halftone dots was the only viable way to print images on printed flowers. In the 1970s, with the introduction of electric extensions, glass screens were replaced by contact screens; in the 1980s, contact screens were replaced by laser beam exposure and direct screening on film.
In retrospect, offset printing evolved from lithographs, while lithographic printing did not use dots. FM (Frequency) screen printing can also print the effect of continuous tuning. At the end of the 1980s, German scientists invented the FM network. A German prepress company adopted the technology and sold the license to Agfa. The name was “CRISTAL-RASTERâ€, which sparked a stir. A worldwide wave. Every manufacturer of POSTscript laser imagesetters had to develop their own products for FM screening, resulting in offset printing. The first user to use FM screening...
Why FM screening is difficult to promote For 15 years, we have been eager to get digital sample proofs on the screen. However, the price of the proofing system has been so high that it cannot be popularized. At present, the promotion and application of FM screening is not smooth. WOLF estimates that today's FM screening method is even more common than FM screening users worldwide. The main reasons are:
1. People cannot visually check the frequency-division and color separation film on the viewing table and cannot estimate its area coverage.
2. No Cromarin proofing system can not proof.
3, when printing, must pay special attention to the environment clean, a little bit of dust, the printing plate will be sun exposure.
Obviously, to ensure the quality of the printing plate, the printing shop must be clean. WOLF pointed out that in Europe and the United States, the division of labor between the prepress output center and the printing factory is clear, and the printing factory is not willing to pay additional fees for the use of FM screening. Although printing houses are interested in the FM network, prepress companies see it as a burden.
Today, when computer-to-plate (CTP) is applied, people are reminded of FM screening. Direct platemaking urgently requires digital proofing, and most digital proofing is continuous. Since the use of direct plate-making can directly expose me on the plate without the need for film, thus avoiding the problem of film-printing.
Direct platemaking creates conditions for the use of FM screening. WOLF believes that when a printing plant has a direct platemaking machine, the unscreened image data is provided directly by the prepress company, and then input into the direct platemaking machine for screening. When we must use the FM screening technology to expose the printing, it is easy to understand what has happened. At least the following reasons can explain why we are going to take this step.
1, the image quality will improve;
2. The moire will disappear;
3, proofing becomes cheaper;
4, the printing quality will be better;
5. The digital file will be reduced;
6, data transmission faster and cheaper.
We believe that with the promotion and application of direct platemaking technology, more people will adopt FM screening technology.
The WOLF recalled that since the CEPS (COLOR ELECTRONIC PRERESS SYSTEM) color electronic prepress system was introduced in the 1980s, prepress professional workers have been demanding a digital proofing proof before the separation film is imaged. At the DRUPA'90 printing expo, two companies exhibited such products: Kodak launched APPROVAL; 3M launched DIGITAL MATCHRINT. Although these two types of digital equipment do not accurately represent the same dots as on film, they can meet the requirements of the halftone dots. Since these two devices can only output 2 A2-size proofs per hour, and the device is priced at as much as 250,000 U.S. dollars, users are still hesitant to purchase such devices, and think that DROMALIN proofing has been used in the past. Cheap and practical. Therefore, Cromarin proofing is still the standard that can be accepted by the printing industry, advertisers, prepress companies and printing factories.
Cromarin made a standard by proofing Cromartin proofing. But strictly speaking, it still cannot meet the requirements of traditional proofing or ideal proofing.
Cromarin's proofing was introduced by DuPont in the early 1970s. Initially, it was only used for the third generation of direct-screen electrical extensions that had just been released to check the quality of the scanned color separations. It was difficult for the operator to see the quality of the four-screen color separation sheets on the viewing table. Therefore, the prepress companies usually used all the scanning color separation sheets to make a sample. If the results were not good, then Rescan.
Due to the high requirement of proofing between the prepress companies and the printing factories, Cromartin's proofing film has a high gloss, and the proofs produced on ordinary printing papers are not satisfactory, so they have not been accepted by more customers.
In the 1990s, continuous kiss proofing was cheaper than Kodak's APPROVAL and 3M's DIGITAL MATCHPRINT. The heat transfer systems such as 3M's RAINBOW and DuPont's 4CAST. They can all be tested continuously and at a low price, but the only drawback is that the supplies are expensive.
The biggest winner in digital proofing is undoubtedly the IRIS GRAPHICS of Sai Angel. It uses inkjet technology, can output proofs like photo quality, and supplies are less expensive. IRIS proofing became an industry standard in the 1990s. The IRIS GRAPHICS system has sold 10,000 units, accounting for about 90% of the market share. Although Fujifilm and Polaroid exhibited a digital proofing machine with a dot generator at the DRUPA'95 exhibition, the sales momentum of IRIS has not been undermined. PRESSTEK and CREO have also introduced a new thermal transfer proofing system. It doesn't seem to be known by people yet. Recently, CANON, EPSON, and Hewlett-Packard have introduced color inkjet printers, which not only are inexpensive, but also can deliver professional-level color proofs at the lowest cost, thus becoming a powerful contender for the IRIS proofing system.
Why did we need a mesh point GEROEGE MEISENBACH to invent a rotatable line glass screen in 1881 and use it to decompose images into halftone dots. At the time, converting continuous tone images to halftone dots was the only viable way to print images on printed flowers. In the 1970s, with the introduction of electric extensions, glass screens were replaced by contact screens; in the 1980s, contact screens were replaced by laser beam exposure and direct screening on film.
In retrospect, offset printing evolved from lithographs, while lithographic printing did not use dots. FM (Frequency) screen printing can also print the effect of continuous tuning. At the end of the 1980s, German scientists invented the FM network. A German prepress company adopted the technology and sold the license to Agfa. The name was “CRISTAL-RASTERâ€, which sparked a stir. A worldwide wave. Every manufacturer of POSTscript laser imagesetters had to develop their own products for FM screening, resulting in offset printing. The first user to use FM screening...
Why FM screening is difficult to promote For 15 years, we have been eager to get digital sample proofs on the screen. However, the price of the proofing system has been so high that it cannot be popularized. At present, the promotion and application of FM screening is not smooth. WOLF estimates that today's FM screening method is even more common than FM screening users worldwide. The main reasons are:
1. People cannot visually check the frequency-division and color separation film on the viewing table and cannot estimate its area coverage.
2. No Cromarin proofing system can not proof.
3, when printing, must pay special attention to the environment clean, a little bit of dust, the printing plate will be sun exposure.
Obviously, to ensure the quality of the printing plate, the printing shop must be clean. WOLF pointed out that in Europe and the United States, the division of labor between the prepress output center and the printing factory is clear, and the printing factory is not willing to pay additional fees for the use of FM screening. Although printing houses are interested in the FM network, prepress companies see it as a burden.
Today, when computer-to-plate (CTP) is applied, people are reminded of FM screening. Direct platemaking urgently requires digital proofing, and most digital proofing is continuous. Since the use of direct plate-making can directly expose me on the plate without the need for film, thus avoiding the problem of film-printing.
Direct platemaking creates conditions for the use of FM screening. WOLF believes that when a printing plant has a direct platemaking machine, the unscreened image data is provided directly by the prepress company, and then input into the direct platemaking machine for screening. When we must use the FM screening technology to expose the printing, it is easy to understand what has happened. At least the following reasons can explain why we are going to take this step.
1, the image quality will improve;
2. The moire will disappear;
3, proofing becomes cheaper;
4, the printing quality will be better;
5. The digital file will be reduced;
6, data transmission faster and cheaper.
We believe that with the promotion and application of direct platemaking technology, more people will adopt FM screening technology.
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