http://www.cyberhalides.com/piezography-printing/microbanding-and-gloss-printing-issues-with-qtr/
---In QuadtoneRIP@yahoogroups.com, <hflockwood@...> wrote :
What you are describing is most likely microbanding. It is a QTR artifact. To avoid, you must have about 1 in. on each end of your print that is blank.
HFL