DETECTION AND EVALUATION OF PRINT QUALITY ATTRIBUTES

The method described in this document arose from a need to identify, monitor and resolve different contributors to print quality (PQ) defects for small‐format dye sub photo printers as well as other types of printers, depending on the implementation. A variety of targets were tested to flag and measure the extent of issues like linefeed error and skew, both of which are typical of inkjet printing. Measuring those targets typically require high resolution scanners with custom software to plot linefeed and different types of visible skew. However, other issues aren’ as easily detected, much less measured; these include misregistration, banding, and roller marks. In order to make the solution more effective for troubleshooting, added weight was given to streamlining the process to provide immediate feedback to engineers and operators