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Jul 1, 2009 12:00 AM
Ryerson University's Dr. Abhay Sharma coordinated the 2009 IPA Digital Print Forum. Digital press output — all on the same stock — was produced on representative devices from Canon, HP, Kodak, Océ, Screen, Toshiba, Xeikon and Xerox, with the results analyzed for color reproduction fidelity, print properties and other variables. Unlike last year, there was no control output on a traditional offset press. The overall conclusion was that digital presses are maturing and capable of challenging traditional offset in most areas. The report also asserts the need for standards as a prerequisite to the continued growth of digital print.
Color fidelity of digital press output was based in part on the devices' ability to match GRACoL, SWOP 3 and/or SWOP 5. Four of the 10 devices met the ISO 12647-7 standard for GRACoL, while five succeeded with SWOP. Matching selected Pantone Goe colors was successful, with all but one device achieving a Delta-E variance of four or less. Tests for tint uniformity, resolution, light fastness and other factors produced a comparable result distribution. No device scored highest across the board, but the study provided a useful window into the strengths and weaknesses of this emerging technology. Next year, the study will encompass the newer inkjet presses.
FOGRA (Munich); Ryerson University (Toronto); RIT (Rochester, NY); and Q-Lab Corp. (Cleveland) conducted the tests. The IPA Digital Print Forum includes a wide testing criterion of repeatability, color integrity and sheet recyclability. Print samples and test pages are included with IPA's Digital Print Forum Results Report. See www.ipa.org.
See John Parsons' IPA Round Ups report on pg. 34.