There is a way to avoid pizza wheel marks on PK papers entirely. The idea is to use the Front Feed, which bypasses the pizza wheel ejection mechanism entirely. However, simply using the Front Feed doesn't work perfectly, because the Front Feed is designed to be used with very thick papers (1 mm to 1.5 mm). If you use the Front Feed with regular papers, the print head winds up too far away from the paper surface, leading to dot misregistration and ghosting (i.e., a fuzzy print). The trick to getting around this problem is to use a thick backing sheet that is the same size as the sheet of paper (2-ply mat board works perfectly). For example, when printing on 11" x 17" paper, place the sheet on a 2-ply mat board that is cut to exactly 11" x 17". It is not necessary to tape the sheet to the board. Align the two carefully, insert the combination into the Front Feed, and print normally. Voila -- perfect prints, no marks.
Given the description I'd guess the manual-feed quality issue is due to taping thepaper to backing. Maybe there's slipping between the sheet and backing duringthe printing which would get things out of alignment.I use my 3800 with Harman Gloss in the sheet feeder, OEM inks all the time andhave never been trouble with pizza wheel marks. But who knows the individual printer.If you really need to use front feed I'd pre-flatten (anti-curl) the paper beforeloading it. I'd think you can get it not to jam.RoyOn Tue, Jun 2, 2015 at 11:41 PM, Michael Birkmose michael.birkmose@... [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:
Had the same problem before the conversion though with OEM inks. Seems that something different happens physically innterms of printing with front feed.
On Wednesday, June 3, 2015, jeff.grant@pobox.com [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:You should probably ask the question at IJM. It's their product that is the problem. It would be nice to know how they avoid the problem.
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