I have a Z3100 24" and have been printing mostly with matte papers. I had some photos to print on glossy and satin papers and noticed that some prints showed what apperared to be a darker stripe or less glossy section in them. THis would show up on several prints and would run the whole length of the paper. This certainly looks like the gloss enhancer did not lay down on a segment of the print as it has a noticable spray pattern in the duller area. I have used both the HP premium satin and the HP instant dry glossy and both papers have exhibited this with no repeatable pattern. Sme times I get a full print without the problem and others have one or two 'stripes' of missing gloss enhancer on a 16" long print.
Anyone else seen this?