The printing plate imaging time of this type of printing press is about 4 minutes, which is twice as fast as the previous model. In the PRINT exhibition held in 1997, Karat (a joint venture between Saturn and KBA) first exhibited a 74 Karat printer equipped with an automatic keyless ink supply. It is said that this type of ink supply device utilizes an anilox roller to adjust the ink supply, so that unskilled operators can be employed. The 74 Karat presses are also equipped with color management devices that allow the press to match many ICC color files. Japan's Screen's recently produced TruePress 4-color press can directly image Mitsubishi-made polyester plates on board. The plate's useful life is estimated at 25,000 sheets and can use traditional lithographic inks.
Color Management and Lithographic Offset Presses with direct imaging capabilities are best suited for the ICC standards and color management workflows in the printing industry. For example, a 74 Karat printer can print the same number of printed sheets of the ICC file standard after entering the appropriate program. For another example, the proofs printed with SWOP inks can be used for print production after color matching processing: offset printing documents based on Euro can be used for the next printing production after color matching. In addition, 74 Karat printers can be used with many proofing devices using appropriate ICC files. As color management technology is further utilized in traditional offset printing production, new control devices such as the CPC 24 developed by Heidelberg will play a significant role in the dynamic management of printing presses. CPC 24 relies on a sheet-fed scanner/colorimeter to analyze the entire print sheet without the use of various color patches. In this way, the CIE L*a*b* values ​​measured from the printed image part can be compared with the required CIE L*a*b* values.
Then the corresponding adjustments are made so that the CMYK value matches the required CIE L*a*b* value. With the use of colorimeters and ICC files (rather than densitometers) in digital prepress processing, traditional color-code control methods are likely to be eliminated. The use of color management techniques in the operation of sheetfed presses will have a profound effect on flat sheet production. In the traditional work plan for proofing by comparing proofs, the proofs are regarded as standards, and a highly skilled press operator adjusts the thickness of the ink layer on the printing press to obtain the same print quality. With the ColorSync color management workflow, the lithographic press automatically adjusts and calibrates the relevant data based on pre-defined color profiles. Fewer and fewer users use the proofs-based workflow, which will ultimately result in the elimination of analog proofing solutions. Digital proofing, due to the use of calibrated precision presses, enables stable quality proofing within a moderate tolerance range, thus paving the way for the promotion and application of computer-to-plate technology.
The Potential Role of CIP3 Technology
The CIP3 technology (integration of prepress, printing and postpress operations) will sooner or later have an impact on the sheetfed printing market. The CIP3 technology is characterized by the input of the job parameters into the digital prepress file through the CIP3 print production format (PPF), which integrates prepress, print and postpress operations. For example, the prepress processing job preparation document will contain data on the size of the sheet, the ink supply, the folding imposition, and the finishing process. As the job is passed in the CIP3 workflow, the machine device compatible with the PPF job format will be automatically adjusted according to the data stored in the PPF job file. Many manufacturers of prepress processing equipment, printing equipment and postpress equipment have agreed to adopt the PPF standard. However, a recent survey published by the Association of Printing and Publishing Technology Providers in the United States showed that customers who purchased new printing presses rarely considered whether the printing press had CIP3 technology capabilities. Most customers plan to completely replace all production equipment. Therefore, it will take some time for the CIP3 technology equipment to have an impact. However, in the next 10 years, the automatic printing process using the CIP3 standard will surely be popularized and applied.
Looking to the future From the current trends, sheet-fed offset printing technology is moving in different directions, targeting printers with different production scales and product markets. One of the main development directions is to increase the degree of automation and shorten the preparation time for the tuning. Automatic printers are easy to operate and require low operational skills. In fact, the latest offset presses with direct imaging capabilities have minimized training requirements for press operation. As employers continue to face the problem of shortage of skilled workers, the printing machine has a promising future from a human resources perspective. More and more color management technologies will be used in digital prepress operations. We will also see more and more printing companies make proofs based on the characteristics of the press, rather than rigidly trying to let the press meet the technical specifications of the proofs. There is no doubt that in the next five years, lithographic printing presses will not compete with digital presses in the short-run color printing market (especially for variable printing). However, in the use of various substrates, coating materials, and spot colors in the field, lithographic presses have greater flexibility than digital presses.
In general, lithographic offset printing machines will continue to be the most economical graphic transfer equipment for the printing industry after we enter the 21st century.
Color Management and Lithographic Offset Presses with direct imaging capabilities are best suited for the ICC standards and color management workflows in the printing industry. For example, a 74 Karat printer can print the same number of printed sheets of the ICC file standard after entering the appropriate program. For another example, the proofs printed with SWOP inks can be used for print production after color matching processing: offset printing documents based on Euro can be used for the next printing production after color matching. In addition, 74 Karat printers can be used with many proofing devices using appropriate ICC files. As color management technology is further utilized in traditional offset printing production, new control devices such as the CPC 24 developed by Heidelberg will play a significant role in the dynamic management of printing presses. CPC 24 relies on a sheet-fed scanner/colorimeter to analyze the entire print sheet without the use of various color patches. In this way, the CIE L*a*b* values ​​measured from the printed image part can be compared with the required CIE L*a*b* values.
Then the corresponding adjustments are made so that the CMYK value matches the required CIE L*a*b* value. With the use of colorimeters and ICC files (rather than densitometers) in digital prepress processing, traditional color-code control methods are likely to be eliminated. The use of color management techniques in the operation of sheetfed presses will have a profound effect on flat sheet production. In the traditional work plan for proofing by comparing proofs, the proofs are regarded as standards, and a highly skilled press operator adjusts the thickness of the ink layer on the printing press to obtain the same print quality. With the ColorSync color management workflow, the lithographic press automatically adjusts and calibrates the relevant data based on pre-defined color profiles. Fewer and fewer users use the proofs-based workflow, which will ultimately result in the elimination of analog proofing solutions. Digital proofing, due to the use of calibrated precision presses, enables stable quality proofing within a moderate tolerance range, thus paving the way for the promotion and application of computer-to-plate technology.
The Potential Role of CIP3 Technology
The CIP3 technology (integration of prepress, printing and postpress operations) will sooner or later have an impact on the sheetfed printing market. The CIP3 technology is characterized by the input of the job parameters into the digital prepress file through the CIP3 print production format (PPF), which integrates prepress, print and postpress operations. For example, the prepress processing job preparation document will contain data on the size of the sheet, the ink supply, the folding imposition, and the finishing process. As the job is passed in the CIP3 workflow, the machine device compatible with the PPF job format will be automatically adjusted according to the data stored in the PPF job file. Many manufacturers of prepress processing equipment, printing equipment and postpress equipment have agreed to adopt the PPF standard. However, a recent survey published by the Association of Printing and Publishing Technology Providers in the United States showed that customers who purchased new printing presses rarely considered whether the printing press had CIP3 technology capabilities. Most customers plan to completely replace all production equipment. Therefore, it will take some time for the CIP3 technology equipment to have an impact. However, in the next 10 years, the automatic printing process using the CIP3 standard will surely be popularized and applied.
Looking to the future From the current trends, sheet-fed offset printing technology is moving in different directions, targeting printers with different production scales and product markets. One of the main development directions is to increase the degree of automation and shorten the preparation time for the tuning. Automatic printers are easy to operate and require low operational skills. In fact, the latest offset presses with direct imaging capabilities have minimized training requirements for press operation. As employers continue to face the problem of shortage of skilled workers, the printing machine has a promising future from a human resources perspective. More and more color management technologies will be used in digital prepress operations. We will also see more and more printing companies make proofs based on the characteristics of the press, rather than rigidly trying to let the press meet the technical specifications of the proofs. There is no doubt that in the next five years, lithographic printing presses will not compete with digital presses in the short-run color printing market (especially for variable printing). However, in the use of various substrates, coating materials, and spot colors in the field, lithographic presses have greater flexibility than digital presses.
In general, lithographic offset printing machines will continue to be the most economical graphic transfer equipment for the printing industry after we enter the 21st century.
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