DeviceLink Open Profiles bundled with ZePrA
ColorLogic offers interested system integrators and suppliers of workflow, RIP and color management solutions the possibility of licensing and integrating pre-calculated, manually optimized DeviceLink profiles for international printing standards. Users can purchase these profile sets, known as “DeviceLink Sets” (DLS). There is also the option of encrypting profiles in order to use them as demo profiles or to ensure that they only work correctly in a specific environment.
Applications for DeviceLink profiles
The principal application of DeviceLink profiles is the transformation of “separated” CMYK data to a different CMYK. In this case, either the original separation can be deliberately preserved, or the data can be specifically “reseparated”. Practical examples calling for separation-preserving profiles would be adaptation to different papers and printing processes, or limitation of the total amount of color. The aim of reseparation can be to harmonize different separations or to use more black in order to stabilize the printing process and/or save ink.
However, the use of DeviceLink profiles is not limited to CMYK. They also have benefits when converting from CMYK to Grayscale owing to the preservation of 100% black, which would not be possible with normal ICC profiles. DeviceLink technology also offers attractive, new approaches to quality optimization, especially for RGB-to-RGB or RGB-to-CMYK and CMYK-to-MultiColor conversion. The impressive result: pure, highly saturated colors and the same color appearance as for example the original RGB data – in diverse printing processes and using papers with a wide variety of paper shades.
Standard DeviceLink profiles are available for the following applications:
Limiting the total amount of color (TAC) for various printing standards,
e.g. ISO, Fogra, ECI, Ifra, Gravure (PSR), GRACoL, SWOP, SNAP.
Optimized color conversion between different printing standards
These color conversions preserve separations, limit the TAC in accordance with the selected printing standard, and preserve the purity of primary and secondary colors. They ensure smooth transitions in vignettes and permit correct transformation of PDF files. Preserving the separations during conversion guarantees that pure gray tones are not subsequently composed of four colors, and that duplex colors (black + primary color) and triplex colors (black + secondary color) remain pure, their colors nevertheless being optimally transformed in colorimetric terms. In addition, the color appearance of the source color space is optimally preserved in the target color space, because both the paper color and the dot gain are taken into account.
Ink reduction (SaveInk)
The ColorLogic DeviceLink profiles for ink reduction preserve the separation characteristics while at the same time replacing CMY with black. This leads to far better transformation than classical ICC-based conversion with strong GCR. There are SaveInk profiles for three different intensity levels. The first level optimizes the data for a long, narrow black and is designed to stabilize the printing process and harmonize the separations. The second level targets good ink saving and the best possible printing characteristics. The third level focuses on maximum ink reduction, but presupposes that the press is perfectly set for the respective printing standard, and that the densities are not varied during printing.
CMYK-to-Grayscale conversion profiles
When converting CMYK data to Grayscale using ICC printer profiles, a tone composed of pure, 100% black – such as black text – cannot remain 100% black owing to the architecture of the profiles. Instead, it is converted to 95%, for example, depending on the printing process involved. On the press, this leads to rasterizing and thus to unsharp printing results. The CMYK-to-Grayscale DeviceLink Sets retain 100% black.
RGB-to-CMYK separation profiles
Depending on the quality of the printer profile used, conversion from AdobeRGB, sRGB or eciRGB_V2 to the various printing standards can give rise to annoying artifacts in some areas. For instance, smooth RGB vignettes often have a much less smooth structure after conversion to CMYK, highly saturated RGB colors lose their saturation, and losses of definition may also occur, depending on the rendering intent used. Even if top-quality printer profiles are used, vignettes in RGB primary and secondary colors cannot be transformed into pure CMYK primary and secondary colors after conversion.
The ColorLogic separation DeviceLink profiles are optimized for conversion of AdobeRGB, sRGB and eciRGB_V2, meaning that the above problems are avoided. In addition, the special ColorLogic rendering intents optimally preserve the color appearance of the original RGB data in the target color space by taking both the paper color and the dot gain into account.
ZePrA 4.5 provides the most requested features and improvements, such as:
Tight Integration with CoPrA
SmartLink now integrates CoPrA SP with ZePrA. Use CoPrA DeviceLinks in ZePrA, create SmartLinks from CoPrA DVL presets on-the-fly, create SaveInk DeviceLinks for your printing process on-the-fly with SmartLink and use Reprofiler optimized profiles to adjust for print deviations within ZePrA.
callas integrated PDF flattening technology allows you to flatten or rasterize PDF files on-the-fly within ZePrA using Callas technology based on the Adobe PDF engine, eliminating the need for third party tools.
Spot Color Opacity
Now there’s even better simulation of overprinting spot colors. Define the opacity of spot colors, Measure colors on white (e.g. substrate) and black (e.g. process black), define print order of spot color and there’s a new automatic user defined warning for out-of-gamut spot colors.
Large Pixel Based Files
Files larger than 2 gigabytes now fully supported
Revamped Navigation Panel
New single navigation panel allows for easy access all the functions to set-up and control ZePrA
New Productivity Features
Work more efficiently than ever before with Transparency Flattening, Administrative Control, Convert Selected Pages of a Multipage PDF, Apply correction DeviceLink profiles, Job Priority and Large Pixel File Support (above 2GB).
ZePrAs Auto Setup Wizard
The easiest way to automate color conversion work is to use a combination of ZePrA and the Standard DeviceLink Profile Sets. This combination allows conversion of data to standard printing conditions without being a color management expert. A few clicks is all it takes, and ZePrA then automatically configures all the necessary hot folders and is instantly ready to process PDF, TIFF and JPEG data for the CMYK, RGB and Grayscale color spaces and spot colors. ZePrA can be configured differently to address the various targets of possible color conversions. Therefore, four different ways to define your queues are available:
- Normalize to document color space or output intent
- Normalize and convert colors to new output condition
- SaveInk or optimize total area coverage
- Direct color conversion to new output condition
Special features of ZePrA
The combination of ZePrA and ColorLogic DeviceLink profiles is currently the world’s simplest and fastest PDF color server when it comes to individual configuration. ZePrA is the first solution to provide full support of the standard tags in ICC DeviceLink profiles and use them to define a workflow. In addition, it is extremely fast.
But ZePrA is not only fast, it also delivers top quality by converting all PDF/X standards (from X-1a to the latest X-4 and X-5n standards). Jobs can easily be monitored in the clearly structured Overview window, which is divided into jobs in progress, pending jobs, and processed jobs. The color quality of the converted file can be verified with the help of an integrated soft proof without requiring any additional third-party tool. ZePrA is, of course, not limited to using the standard profiles. This is just one possible way of creating a workflow.
With the help of the Configurations window, users can manually define any combination of color conversions they need to automate. Individual configurations can be saved and applied to any hot folder, or duplicated and modified for other conversions. There are separate areas for selecting the desired color conversion for every supported color space. In addition, options are available for the targeted handling of spot colors, the definition of PDF-specific settings and, from Version 2.0 on, the new capability to apply correction curves to process and spot color channels with the help of the brand-new Gradations module.
Advantages of SmartLink technology
An additional highlight of ZePrA is the SmartLink module, whose intelligent mechanisms permit reliable color conversion of all data. Instead of “normal” ICC color conversion with device-dependent profiles, SmartLink generates a DeviceLink profile “on-the-fly”, based on the output profiles involved and the rendering intent. ZePrA uses SmartLink not only for RGB-to-CMYK, but also for CMYK-to-CMYK, Gray-to-Gray, Gray-to-CMYK, and CMYK-to-Gray conversion.
Three different methods are available for configuring SmartLink:
In fully automatic mode, SmartLink is activated in ZePrA, and all required conversions are calculated in the background in the form of DeviceLink profiles based on the source and target color spaces for RGB, CMYK and Gray
It is also possible to use specific DeviceLink profile for certain conversions. Whenever these combinations of source and target profiles and rendering intents are detected, SmartLink will use the DeviceLink profiles that you have saved in a specific list. This option is especially interesting for all those customers who want to use their individual, perhaps edited DeviceLink profiles, such as the high-quality ColorLogic DeviceLink Sets.
The third mode combines both options. First, ZePrA searches for appropriate DeviceLink profiles in your list. If no profiles are found, the required DeviceLinks are generated in the background.
Integration with Enfocus Switch
Due to the fact that many users are interested in automating relatively complex workflows, only part of which is covered by color conversion, ZePrA works with the Enfocus Switch automation solution (more information on this integration can be found at www.crossroads-world.com). The ZePrA Basic package is required for Switch integration as it includes CLI capabilities. Other workflow solutions can also access the outstanding color management quality of ZePrA Basic through the included CLI in that package.
ZePrA efficiently closes the gap between manual color conversion of PDF and pixel files and use of a complex and expensive workflow tool. Moreover, it is a perfect supplement to the other products from ColorLogic.
Advantages of ZePrA at a glance:
- Simple, clearly structured user prompting and setup
- Extraordinarily high speed processing of files
- Outstanding quality of PDF processing
- Supports all common PDF/X standards
- Modular solution which allows to start small and add more modules later
- Outstanding quality of color conversion
- Supports color management for all color spaces including Multicolor
- Missing DeviceLink profiles can be build on-the-fly with SmartLink and the integrated CoPrA
- Adjust printer color deviations with the integrated Reprofiler
- Sophisticated spot color handling
- Easy to integrate into Enfocus Switch