[alt-photo] Re: Sky banding - 3800 Printer

[ender100]

It won't show in a regular inkjet print when printing on the positives because it is so subtle and in the deep shadows.  I have only rarely seen a reference to this when printing "regular prints" on the Epson List and I believe it was only apparent until the prints had cured.  Why it can come and go with one printer or another and never affect other printers I do not know.  The Epson 3800 is the least prone to this of any printer I have seen, except for the R1800.  I guess it has something to do with uneven paper feed of the OHP.  It can occur with any ink combination you try and any driver setting you try.
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Best Wishes,

Mark Nelson
Precision Digital Negatives
PDNPrint Forum @ Yahoo Groups

Mark Nelson Photography


On Feb 21, 2010, at 12:15:15 PM, "Marek Matusz" <marekmatusz at hotmail.com> wrote:


Amy

This is a tough problem and I agree with others that these are not mechanical roller marks. A couple suggestions here. You should be able to print a test print on a photo glossy paper and see the banding. Regular paper is not as good as it doeas not show smooth transitions well. That would help with troubleshooting. Are you sure that one or more nozzles are not firing? It almost seems that this happens as the head moves in one direction, but not in the other. Are you using bi-directional printing?
Epson 3800 has enough density to print one or two inks. Can you try another ink combination? Just yellow and black has plenty of density.

Finally to eliminate bad substrate print the picture with paper in the other direction.

SOrry, nothing easy here.