Digital proofing in the CTP wave

CTP (Computer-to-plate) technology appeared in the 1980s. This period is the initial stage of direct plate-making technology research. So during this period, neither the technical aspects nor the quality of the platemaking are very mature. In the 1990s, equipment manufacturers and printers cooperated closely, accelerating the pace of research and development of this technology, and during this period reached the level of maturity and industrial application. Therefore, at the Drupa Printing Exhibition in 1995, 42 CTP systems were exhibited.

This move immediately aroused the printing industry's strong attention to this technology. Between 1995 and 1997, many large printing companies adopted the CTP system to realize the direct plate-making process. However, because the direct plate-making machine was still very expensive during this period, the use of this technology in various small and medium-sized enterprises was limited. Promotion. From 1997 to 1998, the price of direct plate-making machines dropped significantly, and direct plate-making plate materials began to mature and develop, so a large number of small and medium-sized printing plants began to accept and use CTP technology.

Direct plate-making system is a comprehensive multi-disciplinary technology industry, which includes precision machinery and optical technology, electronic technology, color digital image technology, computer and software technology, new printing plate and material technology, automation technology and network technology in one The automatic production system is another major technological revolution in the contemporary printing industry.

Digital proofing-CTP's left arm and right arm

Digital proofing is the key technology to support the overall digital workflow of CTP workflow printing. It not only involves customers, but also affects the printing shop. Digital proofing technology is one of the popular technologies in the prepress field in recent years. The so-called digital proofing is to output the data of the page (or printed sheet) produced by the color desktop system without any form of simulation means, directly through the color printer (inkjet, laser or other methods) to check the image page of the pre-press process Quality, provide reference samples for the printing process, and provide users with a basis for confirming the signature and printing. This digital proofing technology does not simply print out color proofs, but uses complex color management software to enable the output proofs to reproduce the matching print proofs, including paper, ink, and printability. similar.

The progress of the times stems from the needs of users

The starting point of digital proofing is after the establishment of the International ICC Protocol Conference in 1993, and the actual time in China is around 1995. At that time, China did not have a long time to use color desktop systems, the digitalization of the printing industry was not high, and the function of ICC color management software was weak, so digital proofing did not receive much attention in the early stage of its promotion in China. But in just six years, the application of digital proofing in China has made great progress. From the beginning to ask for directions, to the mid-term promotion staggering, and now it is widely accepted, no matter who will be surprised at the speed of its development in the Chinese market. Looking back on this journey, we can draw the conclusion that digital proofing not only brings clear effects, fast speed, and true colors to China, but more importantly, it brings a kind of advanced technology to drive the market. Possibility of meeting customer needs.

As the world's leading global provider of computing, imaging and service solutions, Hewlett-Packard has unique advantages in the field of printing. In response to the continuous improvement of the market segmentation, according to the different needs of the printing and publishing markets, HP DesignJet is launched. 5000, HP "Photohand" HP DesignJet 10ps / 20ps series, HP DesignJet 1000 and many other digital proofing products have broken through the limitations of hardware technology that plagued manufacturers for many years, paving the way for the development of digital proofing in China. It is with the help of hardware manufacturers represented by Hewlett-Packard that digital proofing can make tremendous progress in six years.

In addition, because the largest share of the printing market in China is offset printing, digital proofing technology first breaks through from offset printing. There are already pre-press companies mainly based on digital proofing in Beijing, and the business volume is still growing, such as Shangpin and Shenghong Company, indicating that digital proofing technology has been accepted by the printing industry. Taking St. Rainbow as an example, it became one of the first applications of digital proofing technology, and purchased the HP Designjet5000 full-open digital proofing machine, completely changing the current working state. The digital proofing machine can not only be used as a tool to replace the traditional proofing, but it can also be widely used in every process of our production to help the company carry out internal quality management. Now, dozens of direct plate-making systems have been introduced in China, and digital proofing equipment is an essential part of the digital proofing system. It is expected that with the popularization of direct plate-making technology, digital proofing technology will be developed quickly in the field of offset printing.

However, the digital proofing technology is not only suitable for offset printing, but also suitable for printing methods such as gravure and flexo printing, and it should be said that gravure and flexo proofing is more difficult, the cost of plate making is higher, and it is more likely to cause rework and rework. The losses caused are also greater, so there is an urgent need to solve the problem of digital proofing. It's just that gravure and flexo printing are mainly used for packaging printing. The color reproduction rule is different from that of offset printing. It has some special characteristics. Spot colors are often used. The color of digital proofing is more demanding and more difficult. It may be very difficult to completely simulate the proofing effects of gravure and flexo printing, and there are still some technical problems that need to be solved at present, but if in practice can simulate 80% of the proofing workload, reduce one or two scraps, digital proofing You can get very good economic benefits.

The application of digital proofing stems from the continuous updating of products

For our output center and printing factory, proofing is an indispensable important link. In the face of the current market competition and the increase of investment risks, we are more required to pay attention to various aspects such as investment returns and risks. There are too many proofing products on the market, and each manufacturer has its own branded products. However, as the world's leading global supplier of computing, imaging and service solutions, Hewlett-Packard has a unique advantage in the field of printing. Taking the production-grade product HP "Speed? Q" all-round champion HP DesignJet 5000 as an example, we can Know why HP can make waves in this area.

Unmatched speed

Time is life, and this is an eternal law. With the rapid development of the color printing industry, the increase in orders, the reduction in the number of prints per order, the shortening of the printing time, and the ability to increase the speed of proofing and production have become the "commanding heights" for printing companies to compete for market control. HP DesignJet 5000 appeared in front of us in time. Professional traditional proofing takes at least a day and a half, while 5000 digital proofing takes only half an hour to get a folio digital sample. HP DesignJet 5000 can output 7 square meters per hour at the highest quality. If the format can be achieved 50 square meters. Relying on HP's advanced JetExPress technology, let us enjoy the feeling of flying.

Excellent image quality

Quality issues are often talked about, but they are still the most concerned by users. The proofing speed of the output center is fast, can it not keep up with the quality? This is also a question considered by output centers and printing houses. In order for manufacturers to have both fish and bear's paws, HP DesignJet 5000 is equipped with temperature and humidity sensors, which can be automatically adjusted when the temperature and humidity change. In addition, the human factor has always been an unsolvable problem. As the saying goes, soldiers will come to block water. HP DesignJet 5000 uses digital technology. Once the proofing color file (ICC file) is determined, the proof color of each picture That is, it has nothing to do with the level of the operator, so that this problem can be solved. In addition, the HP Designjet 5000 itself uses a closed-loop color calibration system to ensure that the same proof is output multiple times without changing the quality of the proof.

Low cost

Speed ​​and quality are resolved, and cost issues are on the agenda. Cost This is a very real problem, and also the focus of customers and manufacturers. They all hope that the cost is as low as possible. What does HP DesignJet 5000 do for us? The initial investment cost of the HP DesignJet 5000 is only a few hundred thousand yuan (computers, large-format printers and related software); in terms of space, 5000 can work in a general office environment, thereby avoiding a large investment in the plant; because the digital proofing is Now the proofing is done, and the film is released later, so once the proofing effect does not meet the customer's requirements, you only need to proof again, instead of repeating the film repeatedly, avoiding unnecessary waste and reducing costs. Even more exciting for users is that HP DesignJet 5000 provides a fully interchangeable ink system, which allows a printer to support both indoor and outdoor inks at the same time. This is not possible with any brand of large format inkjet printers.

In addition, the hp designjet 5000 series has a production-grade printing speed of 52.86 square meters per hour, an ultra-large width of 152 cm, and photo-like fine print quality. In addition, it is equipped with an hp jetdirect network print server that is 4 times faster than before Completing the data transmission at a faster speed, these superior performances have long been talked about by industry insiders, and its humanization and intelligence bring unexpected returns, which have greatly benefited us.

hp designjet 5000 can print on a variety of media, such as coated paper, glossy paper, backlit paper, opaque paper, vinyl paper, canvas, poster printing paper, etc. Common media, in addition, HP's media complementation program has created more for us The freedom to use materials such as silk, cotton and metal films flexibly allows us to create original and imaginative designs in order to win more business opportunities.

Not only that, it can also be compatible with other brands of media. For any media that has passed HP print quality certification, HP will place the print color profile of this print media on the URL (DESIGN / JET online) open to HP large format printer users. , We can download the print color profile of this medium to the HP large format printer to get the best output, so that we have more choices, according to the capital, cost and required quality of each business To choose print media of different brands, instead of using Epson printers before, due to equipment incompatibility, it is necessary to use Epson's standard print media, which will cause unnecessary cost waste when doing low-margin business.

HP DesignJet 5000 digital proofing products have broken through the bottleneck in the practical application of digital proofing in print quality and speed. HP's HP DesignJet 5000 large format printer series has become the most typical application in the current large format printer market, achieving speed Organic unity with quality. It can be said that the introduction of HP DesignJet 5000 has brought a sharp weapon to the future proofing work of output centers or printing houses.

By understanding the HP DesignJet 5000 product, we can understand why our country's digital proofing has made great progress in 6 years.
A better tomorrow stems from progressive digital proofing

At present, "HP Digital Proofing System" has been practically applied in production. The promotion and practice of digital technology in various domestic industries will inevitably lead to a huge change that cannot be avoided. This change provides a new way of thinking for promoting business efficiency, improving product technology content, reducing enterprise production costs, and achieving intensive profit growth for enterprises. It has become a new growth point of the national economy and is also essential for people's lifestyles. Will have a profound and positive impact.

In foreign countries, digital proofing has become very popular. The majority of proofs in developed countries such as the United States and Japan are completed by digital proofing, and only a few of them use traditional proofing when playing spot colors. Domestic attention to digital proofing is also increasing. Beijing is planning to establish a professional after-sales service company for digital proofing equipment. Such companies will develop corresponding solutions for different users of digital proofing, different proofing equipment, raw materials and printing equipment of users. Pre-job training. Through a series of services, the pre-press and post-press are more closely connected, helping enterprises to output high-quality products and win more customers.

Restore CTP from digital proofing

From the development of digital proofing in China, we can see the development prospects of CTP in China. The CTP wave is turbulent, and since the end of 1990-1996, there have been more than 300 published patent articles. In 1996, 55.3% of the 100 largest printing companies in the United States used the CTP system, and 28.8% used the color short-form digital printing system.

Since 1985 until now, most of the newspapers and printing plants in various provinces and cities in mainland China have used laser phototypesetting and offset printing. The next step of the technological transformation of these financially powerful newspapers and printing houses is to directly make plates, produce color newspapers and high-end color printing and packaging printing. The scanning format is required to be enlarged to the opposite (740 * 510), and the printing durability of the plate material reaches 300,000 to 500,000 prints. For printing, CTP saves manpower, improves quality, and reduces environmental pollution. And streamlined and optimized process flow makes it easy to set up a continuous production line with a high degree of automation. CTP system and technology have been regarded as a development direction of China's printing industry, and have been included in the national "Ninth Five-Year Plan" key scientific and technological projects, is a typical high-tech, high-growth, high-return technology-intensive industry. We have reason to believe that in the not-too-distant future, CTP technology will spread all over our country, and contribute to the rapid development of our country's economy.

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