What is “banding” ?
There are several causes of banding. It can be due to the program that it is exported from like Indesign or Corel. Also, too many gradient steps in a small area create banding (Ex. transforming from a very light color to a darker color)
CLOSE UP OF BANDING
Banding
check your digital files before sending to avoid banding. While using gradient, carefully look over for smooth transition.