Measuring Digital Print Quality
It's been documented that digital color and direct image technology provide faster turnarounds, more efficient short pressruns, and lower costs.
Now a recently published study by the Graphic Arts Technical Foundation (GATF) determines how the print quality of digital imaging compares with offset. GATF performed the tests using three different substrates. The results? The study found some digital jobs fared better in rub resistance tests than some offset jobs.
The report, Digital Color Printing and Direct Imaging Benchmarking Study, looks at current applications and target markets for digital color printing. GATF used two direct-imaging presses and seven digital color presses to conduct the research. The foundation provided participants with an EPS file to print on 1,000 sheets of three substrates. GATF randomly chose 20 sheets and measured Status T density, density range, density standard deviation, and tone value. More testing included abrasion resistance, fade testing, folding, and comparison to offset color standards.
According to the report, digital color press technology provided greater overprint trapping and achieved a larger color gamut. The report is available through the GATF.