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Printer Benchmark David Hunter, ChromaChecker Corporation


We have been involved in multiple situations in which individuals lost their jobs, or a lot of credibility, because they bought color output devices that did not perform to the expectations of customers or management. We have developed a straightforward way to benchmark any output device and understand what its normal variation and normal accuracy is in order to implement necessary processes to bring the device to desired expectation of color reproduction.


The Magazine 16


SUMMER 2017


ChromaChecker is the first Color Conformance Platform which can quantify owner and customer expectations and assess if output device can meet their expectations. It also assesses the precision and accuracy of any output device and fixes the accuracy by iterating new G7 tone curves to bring a device back into compliance with the desired target.


Unlike any other system on the market today, ChromaChecker provides a manufacturing framework which can assess a device’s performance per sheet, per job, and over time. ChromaChecker can quantify which device/ track is the closest to the desired reference condition by establishing a targeted E-Factor. E-Factor is based on CRF at the 95th percentile delta E (00). It provides an excellent indication of how close the colors on the pages match to the reference, and constantly monitors devices, ensuring stability months after the last test.


Digital Press and Large/Grand Format Devices and Proofers


ChromaChecker has developed four PDF files that are designed to benchmark proofers, digital presses, and large format devices and provide measurement data that, when uploaded to ChromaChecker Cloud, will provide eight different benchmarks for an output device (To


obtain the test, email david@chromachecker.com). The eight benchmarks cover:


1. Within-page uniformity (PDF1/Precision)


2. Primary (CMYK) colors matching reference printing condition numbers (PDF1/Precision)


3. Repeatability through any length print run, including page uniformity within print run (PDF2/Precision)


4. Reproducibility between multiple days (PDF1/ Precision)


5. Shared visual appearance between multiple devices (PDF3/Accuracy)


6. Gamut volume numeric metric along with percentage of PMS colors within the gamut (PDF3/Accuracy)


7. Accuracy of the devices ability to match GRACoL (PDF3/Accuracy)


8. Addressability, determining the marking engine’s resolution and contract capabilities (PDF1/Precision)


Conventional Press with Export Capable Automated Measurement Devices (Intellitrax/SpectroDrive/Heidelberg Image Control)


Unlike other color software, ChromaChecker is compatible with virtually any software a company is already using to measure color (as long as it can export data). Chroma- Checker is eliminating the need for conducting dedicated press runs to iterate G7 conformance. ChromaChecker has engineered G7 Calibrated Control Bars, which have solids in every ink zone, along with tints and G7 gray finder patches spread throughout the remaining patches. These finder patches allow ChromaChecker to assess G7 conformance within-page uniformity, ensure solids are


What Criteria to Use to Purchase New Devices or Monitor Current Devices?


SOLUTIONS


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