Determination of Color Accuracy in Platemaking

Beautiful and harsh uniform

At present, the proofing system (ie, the digital proofing system) using inkjet printing technology has been used by more and more people to design proofing and prepress proofing. To choose a digital proofing system, in addition to considering color accuracy (color accuracy) and repeatability (stability), factors such as speed and cost should also be considered. And to meet these requirements, with these digital proofing factors, when the number of digital printing products provided by HP, as well as a variety of digital proofing solutions based on this. As the most famous international printer manufacturer in the world today, Hewlett-Packard has been paying attention to and analyzing the requirements of users in the image design and printing field for proofing work. Since 1999, it has launched a series of ink jets for users in the image field. Print equipment, including the HP DesignJet 800 series, the HP DesignJet 1000 series, and the HP DesignJet 5000 series printers, meets users' digital proofing needs with HP's various digital proofing solutions. Hewlett-Packard has thus become a pioneer in guiding the digital proofing industry forward.

On September 17, 2001, China Hewlett-Packard Co., Ltd. will also launch a new series of photo inkjet printers, including the HP DesifnJet 10PS/20PS/50PS models. This is specially designed and produced by Hewlett-Packard Co., Ltd. for pre-press proofing in graphic image areas such as platemaking output centers, advertising design companies, and publications magazines. It can well solve the problem that for a long time around the "color people" can not accurately preview the color accuracy before printing, providing people with a good assistant for color photo.

This brand new pictorial "hand" can be said to be a complete set of color management and output system, rather than a simple inkjet printer, it includes a new closed loop color system, unique HP print head technology, built-in RIP (color Management) software, HP proofing media and inks. It also complies with Apple Color Sync, Macintosh, and Windows ICC industry standard colors to ensure complete program management with full color management and output. Photo “hands” can achieve the color standard defined by the printer under certain conditions through a closed-loop color management system. The minimum droplet size is up to 4 picoliters. The HP color layering technology and the 6-color CMYKcm print head provide a wider range of colors. , Simultaneous reduction of graininess and smooth color transmission, combined with the use of the built-in color management RIP of Heidelberg. Overall, these features ensure a high quality image output of 24001200 dpi and more accurate color proofing. And true. It has the following unique advantages in color performance:

HP inkjet printers can trust color printing. When producing ink for HP Designjet printers, HP pharmacists use new methods to ensure ink consistency over a long period of time. HP proofing media are also produced under strict quality control measurement conditions, which ensures the consistency of these media for platemaking. Quality control during production along with the self-calibration process ensures that the colors printed by the Designjet printer are consistent and trustworthy. The newest HP "Framing Hand" series of graphic printers uses six basic colorants, and their consistency and quality can be maintained longer.

The color accuracy of the "Photos" series of graphic printers is the most perfect. The new "Photo Manual" series of graphic printers is designed for use as a printing press sample printer. Every effort was made to supply ink and replace the proofs. When these printers put into the demanding plate printing market, no changes were made to any part. It uses six color inks to ensure that there are enough color gamuts to reproduce the image. HP mass-produces its own inks. These inks have very strict color characteristics and can maintain color consistency over a long period of time; HP proofing media also maintains excellent display, which contributes to the device's color accuracy.

HP printers are designed around color consistency. The color meter is included in HP's print head, which can monitor small pieces of color film in the self-check system. Self-calibration ensures that the printer maintains its factory settings, even though in most quality-conscious operations, the printer still has the ability to print as a pre-press sample. The printer's color consistency feature ensures that the same printed colors are brought together between the printer and the printer. This enables HP's "Photo Manual" series of printers to perform remote proofing. Two different users can share their work remotely by sending electronic files, saving time and money. At the same time, its self-calibration feature ensures that the locally printed sample has the same color quality as the sample printed at the source, and when using the same print media, it delivers a test pattern that is within 3 Delta-E on average. This for the prepress process, this accuracy ensures that the print sample does not introduce unnecessary variability.

The accuracy of inkjet colorants relative to the color of the printed ink. The color gamut of the Hewlett-Packard's "Hands-on-Hand" series of graphic printers includes the colors used by presses worldwide. By using the software that drives the printer to control the internal color management controls, it is possible to use the color system used anywhere in the world. When inkjet proofing is performed using the ICC color profile, the sample print is easy to provide color and appearance, and the press operator can perform the matching effortlessly.

From the outstanding expression in the field of color in the “PhotoManiper” series printers, we can see that the “Photography Hand” printer is a real realization of the beautiful and harsh integrity of “color” in digital proofing. This unification makes it not only suitable for digital "contract" proofing, but also can reasonably replace the traditional photographic proofing that prepress and printing companies are responsible for. Currently, Hewlett-Packard has designed various digital proofing solutions for the “Focus” series printers, such as design proofing solutions for individual designers, design proofing solutions for design work groups, color proofing solutions, color layout proofing solutions, and Other proofing application solutions. HP hopes that through these digital proofing programs, this most innovative color inkjet printer will fly into millions of homes, allowing users to print a more beautiful world and make the world more colorful.