As we all know, proofing is an important basis for analog printing, checking plate tonality and color tone can be a good synthesis of reproduction, editing proofreading information, not only to provide correction and reprint version of the error and data standards, but also print ink, ink layer density and dot gain and other data The official printing reference is an important standard that guarantees that printing will be standardized and standardized. Therefore, proofing is an important process for connecting prepress and printing. The quality of the proofing process directly affects the quality of the plate and the printed matter.
With the continuous development of digital technology, companies have continuously launched print production solutions based on computer and network technologies. The traditional publishing and printing industry has begun to enter the era of digital production, and digital proofing technology has gradually entered the pre-press proofing field. Digital proofing is the key process in the digitalization of the publishing and printing process, which directly restricts the quality of the production processes and products of publishing and printing. Digital proofing technology requires strict requirements for paper, ink, hardware equipment and software. At present, there is no uniform standard for high-precision equipment, and there is no proofing software that matches the hardware equipment and controls the operation process and color parameters as a whole. The enterprise and its management personnel are all respectful of it and still adopt the original inefficient proofing method.
Although many people still doubt whether the pre-press field can actually use digital proofing instead of traditional proofing, these cannot stop the development of digital proofing technology. The 2002 alert seminar organized by the Printing Technology Foundation used digital proofing technology as a research topic and opened a new chapter in digital proofing technology.
In February of this year, the Printing Technology Foundation GATF held the 2002 Tech alert Conference in Pittsburgh, Pa., Heidelberg's proofing solutions and ICC color management tools in the folio (8 pages) digital color proofing study comparison (digital color proofs Compared with the printed draft, it topped the list. At the meeting, GATF evaluated the proofing quality of Heidelberg, Agfa, Kodak, Fujitsu, DuPont, CGS, and Creo seven companies, and measured the IT 8.7 color proofs provided by various companies with reference to the GATF prints. /3 Test Chart: First use the spectrophotometer to measure the test chart, and then calculate the color difference between the proof and the print. The color difference is described by the ΔE value, and the closer the color is, the smaller the ΔE value is. Heidelberg's proofing solution uses the company's color matching software and the HP Designjet 5000 printer. The measurement results show the closest color matching to the supplied draft, not only minimizing the average ΔE value (1.97) of 928 color patches, but also The largest ΔE value in the color patch is also only half the ΔE value of the closest sample to other companies. The above data are measured by a scientific method using a spectrophotometric apparatus, which eliminates human eye deviations and defects. These proofs from the company have been able to accurately simulate the draft and have achieved true high-precision digital proofing.
Heidelberg is very confident with its own software, because the company's software has been converting color between RGB and CMYK for two to three years, but all of its competitors are constantly strengthening this work. Heidelberg's ColorOpen software system - ViewOpenICC, ScanOpen ICC and PrintOpen ICC color management software - controls the color from a variety of starting points: ViewOpen chooses a Heidelberg colorimeter, which can be used to correct screen colors and generate screen ICC profiles ScanOpen is based on the device characteristics of scanners and digital cameras. It can create ICC profiles for scanners and digital cameras. Finally, PrintOpen can create ICC profiles for output devices (eg, printers, proofers, printers, etc.). The newer version of the software uses a new user interface, improves UCR and GCR functions, and adds features such as graphical color space comparison, ΔE calculation, and color calculation in different media. Among them, Printopen can realize the transformation from CMYK to CMYK characteristic file, edit and produce the characteristic file of high quality; The processing of Scanopen shadow detail is improved, support G4 apple computer. The company's latest Color Management version 6.0 further promotes the visualization of color management, allowing the ICC characteristic curve to be directly embedded in the image, and soft proofing in CMYK and RGB modes will be completed on the display. The built-in color assistant automatically makes necessary adjustments (including highlights and shadows) to the scanner, determines the exact contrast curve, and even removes color casts. The three softwares work together to form a complete and complete digital printing color management process.
Color matching has always been recognized as a subjective process, and even masters with many years of technical experience cannot guarantee full realization. However, based on the results of the alert seminar, Heidelberg has confirmed the company's superior color matching technology. It also confirmed that the HP Designjet 5000 printer and appropriate ink, paper, and color management technologies can be used to obtain prints. Match the best proofs. Hewlett-Packard, with its vast experience and technology in the printing industry, provides the printing industry with the complete HP Designjet 5000 large-format printer, taking full account of the needs of today's digital proofing in terms of quality and speed:
1. In terms of speed, using HP's advanced intelligent JetExPress technology, there are up to 512 nozzles on each 25mm wide printhead, and the ink droplets are ejected at a frequency of up to 15,000 times per second, allowing the printer to run, The ink coverage for each pass is as large as 20 mm. With the support of new technologies, 5000ps has built-in Adobe Postscript3 RIP, and is equipped with an hp jetdirect network print server that is 4 times faster than before. It can complete data transmission faster and the processing speed has been greatly improved. The maximum speed of the 152cm model (coated paper) can reach 52.86 square meters per hour, the best quality model can reach 7.06 square meters per hour, the maximum speed of the 107 cm model (coated paper) also has 46.36 square meters per hour, and the best quality mode It is 6.32 square meters/hour;
2. In terms of quality, it has a six-color ink system (that is, light green and light magenta colors are added in addition to CMYK). The drop size is only 12 pl. Each color is printed out by adopting HP color layered smart color technology. 17 different levels of color intensity, resolution up to 1200dpi, and each ink dot can achieve more than 200 different colors, improve the fineness and layering of the print image, so that it has a larger color space, More colorful, more clear levels;
3. Image quality stability: Using HP's unique closed-loop color calibration system to ensure that as long as the proofing and coloring file (ICC file) is determined, using any printer, multiple output the same proof quality unchanged, can be guaranteed in the repeat printing process The stability of the image quality also lays the foundation for remote proofing. HP DesignJet 5000PS large format printer itself is also equipped with temperature and humidity sensors, when the temperature, humidity has changed, it can automatically adjust to ensure a stable digital proofing quality.
4. Complete and convenient connection output solution: equipped with standard parallel port and the latest hp jetdirect network print server, also developed a variety of drivers for various operating systems and HP's specially developed AutoCAD driver, to meet the needs of operators in various fields special requirements.
Heidelberg's solution for digital color proofing is not only the closest color matching, but also the cheapest and most productive solution. Heidelberg's proofing solutions and ICC color management tools perfectly coordinate prepress operations and proofing output devices, which not only further improve color management and guarantee high fidelity color, but also simplify the operation process, save customer time, and reduce unnecessary Paper and ink are wasted, which ultimately allows customers to achieve efficient job production. The HP Designjet 5000 large-format printers reflect these advantages in terms of cost, consumables, technology, and high speed.
The HP Designjet 5000 large-format printer saves costs for customers in terms of both technology and consumables: the droplet size is only 12 pl, plus the unique halftone dithering algorithm of intelligent color technology, which can control the ink of each image very accurately. In order to minimize the amount per unit area and save the ink cost, the modular ink system, that is, the entire system consists of ink cartridges, print heads, and cleaning tools. Each print head is equipped with a cleaning device to effectively prevent nozzle clogging. Extend the printhead life and ensure continuity of printing, which also extends the life of the printer; ink cartridges or printheads can be replaced individually according to usage, and each color ink cartridge or printhead is also independent, and can be replaced individually according to the application. The use of 680CC large-capacity ink cartridges reduces the cost of ink per unit of capacity; print heads equipped with smart chips can print 1360CC to 2000CC inks under normal circumstances, and also have unique ink and print media usage monitoring capabilities, and scientifically arrange print operations. Use media to reduce the cost of use. Calculated from the consumables side, the production cost of the Designjet 5000 print per square meter is less than RMB 30 (including ink loss, ink price, ink output, and paper price), which is extremely competitive in the market.
In addition, HP has introduced a new digital process proofing combination of “two proofers + one color management systemâ€. It will use the Designjet 5000 large-format printers of the printing factory together with the customer's 10PS, and use closed-loop technology to ensure the stability of proofing quality. It can greatly increase work efficiency, reduce the inconvenience caused by process links, and save various waste caused by sample changes.
With its rich experience and technology, HP has developed a large-format printer such as the Designjet 5000, which guarantees high quality and efficiency in hardware equipment and technology; Heidelberg's research and development and continuous improvement of proofing solutions and ICC color The management tool creates characteristic files for each output device in the printing operation process, ensures the color unity of the hardware devices, and fully meets the software requirements for digital proofing; the two constitute digital proofing solutions that work together to complement each other and fully meet the high quality of customers. The need for digital proofing is a perfect digital proofing solution.
With the continuous development of digital technology, companies have continuously launched print production solutions based on computer and network technologies. The traditional publishing and printing industry has begun to enter the era of digital production, and digital proofing technology has gradually entered the pre-press proofing field. Digital proofing is the key process in the digitalization of the publishing and printing process, which directly restricts the quality of the production processes and products of publishing and printing. Digital proofing technology requires strict requirements for paper, ink, hardware equipment and software. At present, there is no uniform standard for high-precision equipment, and there is no proofing software that matches the hardware equipment and controls the operation process and color parameters as a whole. The enterprise and its management personnel are all respectful of it and still adopt the original inefficient proofing method.
Although many people still doubt whether the pre-press field can actually use digital proofing instead of traditional proofing, these cannot stop the development of digital proofing technology. The 2002 alert seminar organized by the Printing Technology Foundation used digital proofing technology as a research topic and opened a new chapter in digital proofing technology.
In February of this year, the Printing Technology Foundation GATF held the 2002 Tech alert Conference in Pittsburgh, Pa., Heidelberg's proofing solutions and ICC color management tools in the folio (8 pages) digital color proofing study comparison (digital color proofs Compared with the printed draft, it topped the list. At the meeting, GATF evaluated the proofing quality of Heidelberg, Agfa, Kodak, Fujitsu, DuPont, CGS, and Creo seven companies, and measured the IT 8.7 color proofs provided by various companies with reference to the GATF prints. /3 Test Chart: First use the spectrophotometer to measure the test chart, and then calculate the color difference between the proof and the print. The color difference is described by the ΔE value, and the closer the color is, the smaller the ΔE value is. Heidelberg's proofing solution uses the company's color matching software and the HP Designjet 5000 printer. The measurement results show the closest color matching to the supplied draft, not only minimizing the average ΔE value (1.97) of 928 color patches, but also The largest ΔE value in the color patch is also only half the ΔE value of the closest sample to other companies. The above data are measured by a scientific method using a spectrophotometric apparatus, which eliminates human eye deviations and defects. These proofs from the company have been able to accurately simulate the draft and have achieved true high-precision digital proofing.
Heidelberg is very confident with its own software, because the company's software has been converting color between RGB and CMYK for two to three years, but all of its competitors are constantly strengthening this work. Heidelberg's ColorOpen software system - ViewOpenICC, ScanOpen ICC and PrintOpen ICC color management software - controls the color from a variety of starting points: ViewOpen chooses a Heidelberg colorimeter, which can be used to correct screen colors and generate screen ICC profiles ScanOpen is based on the device characteristics of scanners and digital cameras. It can create ICC profiles for scanners and digital cameras. Finally, PrintOpen can create ICC profiles for output devices (eg, printers, proofers, printers, etc.). The newer version of the software uses a new user interface, improves UCR and GCR functions, and adds features such as graphical color space comparison, ΔE calculation, and color calculation in different media. Among them, Printopen can realize the transformation from CMYK to CMYK characteristic file, edit and produce the characteristic file of high quality; The processing of Scanopen shadow detail is improved, support G4 apple computer. The company's latest Color Management version 6.0 further promotes the visualization of color management, allowing the ICC characteristic curve to be directly embedded in the image, and soft proofing in CMYK and RGB modes will be completed on the display. The built-in color assistant automatically makes necessary adjustments (including highlights and shadows) to the scanner, determines the exact contrast curve, and even removes color casts. The three softwares work together to form a complete and complete digital printing color management process.
Color matching has always been recognized as a subjective process, and even masters with many years of technical experience cannot guarantee full realization. However, based on the results of the alert seminar, Heidelberg has confirmed the company's superior color matching technology. It also confirmed that the HP Designjet 5000 printer and appropriate ink, paper, and color management technologies can be used to obtain prints. Match the best proofs. Hewlett-Packard, with its vast experience and technology in the printing industry, provides the printing industry with the complete HP Designjet 5000 large-format printer, taking full account of the needs of today's digital proofing in terms of quality and speed:
1. In terms of speed, using HP's advanced intelligent JetExPress technology, there are up to 512 nozzles on each 25mm wide printhead, and the ink droplets are ejected at a frequency of up to 15,000 times per second, allowing the printer to run, The ink coverage for each pass is as large as 20 mm. With the support of new technologies, 5000ps has built-in Adobe Postscript3 RIP, and is equipped with an hp jetdirect network print server that is 4 times faster than before. It can complete data transmission faster and the processing speed has been greatly improved. The maximum speed of the 152cm model (coated paper) can reach 52.86 square meters per hour, the best quality model can reach 7.06 square meters per hour, the maximum speed of the 107 cm model (coated paper) also has 46.36 square meters per hour, and the best quality mode It is 6.32 square meters/hour;
2. In terms of quality, it has a six-color ink system (that is, light green and light magenta colors are added in addition to CMYK). The drop size is only 12 pl. Each color is printed out by adopting HP color layered smart color technology. 17 different levels of color intensity, resolution up to 1200dpi, and each ink dot can achieve more than 200 different colors, improve the fineness and layering of the print image, so that it has a larger color space, More colorful, more clear levels;
3. Image quality stability: Using HP's unique closed-loop color calibration system to ensure that as long as the proofing and coloring file (ICC file) is determined, using any printer, multiple output the same proof quality unchanged, can be guaranteed in the repeat printing process The stability of the image quality also lays the foundation for remote proofing. HP DesignJet 5000PS large format printer itself is also equipped with temperature and humidity sensors, when the temperature, humidity has changed, it can automatically adjust to ensure a stable digital proofing quality.
4. Complete and convenient connection output solution: equipped with standard parallel port and the latest hp jetdirect network print server, also developed a variety of drivers for various operating systems and HP's specially developed AutoCAD driver, to meet the needs of operators in various fields special requirements.
Heidelberg's solution for digital color proofing is not only the closest color matching, but also the cheapest and most productive solution. Heidelberg's proofing solutions and ICC color management tools perfectly coordinate prepress operations and proofing output devices, which not only further improve color management and guarantee high fidelity color, but also simplify the operation process, save customer time, and reduce unnecessary Paper and ink are wasted, which ultimately allows customers to achieve efficient job production. The HP Designjet 5000 large-format printers reflect these advantages in terms of cost, consumables, technology, and high speed.
The HP Designjet 5000 large-format printer saves costs for customers in terms of both technology and consumables: the droplet size is only 12 pl, plus the unique halftone dithering algorithm of intelligent color technology, which can control the ink of each image very accurately. In order to minimize the amount per unit area and save the ink cost, the modular ink system, that is, the entire system consists of ink cartridges, print heads, and cleaning tools. Each print head is equipped with a cleaning device to effectively prevent nozzle clogging. Extend the printhead life and ensure continuity of printing, which also extends the life of the printer; ink cartridges or printheads can be replaced individually according to usage, and each color ink cartridge or printhead is also independent, and can be replaced individually according to the application. The use of 680CC large-capacity ink cartridges reduces the cost of ink per unit of capacity; print heads equipped with smart chips can print 1360CC to 2000CC inks under normal circumstances, and also have unique ink and print media usage monitoring capabilities, and scientifically arrange print operations. Use media to reduce the cost of use. Calculated from the consumables side, the production cost of the Designjet 5000 print per square meter is less than RMB 30 (including ink loss, ink price, ink output, and paper price), which is extremely competitive in the market.
In addition, HP has introduced a new digital process proofing combination of “two proofers + one color management systemâ€. It will use the Designjet 5000 large-format printers of the printing factory together with the customer's 10PS, and use closed-loop technology to ensure the stability of proofing quality. It can greatly increase work efficiency, reduce the inconvenience caused by process links, and save various waste caused by sample changes.
With its rich experience and technology, HP has developed a large-format printer such as the Designjet 5000, which guarantees high quality and efficiency in hardware equipment and technology; Heidelberg's research and development and continuous improvement of proofing solutions and ICC color The management tool creates characteristic files for each output device in the printing operation process, ensures the color unity of the hardware devices, and fully meets the software requirements for digital proofing; the two constitute digital proofing solutions that work together to complement each other and fully meet the high quality of customers. The need for digital proofing is a perfect digital proofing solution.
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