What looks like "frequency" banding


#1

I am getting what looks like a soft “frequency” related banding on DN using QTR.
PiezographyDN Pro K5, 9900 printer, 2880 uni, all nozzles firing. Tried all platen options plus re-alignment. It occurs when using the Pro Master curve, or my linearized curve.
Only thing I can think of adjusting is the stepping motor feed, but not sure how when using QTR…?
Ruler is metric…


#2

I’ve seen this before, and it turned out to be the paper. Have you tried different paper?


#3

I’m using Pictorico to make negs…


#4

There is one other option I have not tried, the hybrid dither… will test and reply.


#5

I suggest applying for this: Piezography Driver - Piezography

best,
Walker


#6

Piezography Driver set up as specified by Walker has solved the “frequency” banding, smooth even gradations so far!! Definitely superior dithering… much obliged, thank you