In the early 2000s Digital Dots conducted tests of various devices and published the results in the Pixel Perfect reports.
In 2010 we published a Special Report on UV-Curable Large Format Printers, and in 2013 a guide to Standardised Print Production (SPP), implementing the ISO 12647-2 standard and other supporting ISO-standards in the printing process.
All of the above are available here to view and download, except for the first Pixel Perfect scanner test which unfortunately are not available digitally.
Pixel Perfect (Test Projects 2002-2003)