Btw. I'm still discovering some adhesive tape somewhere on this printer


After some testing I've put the printer to its first real print-job on a 300x740mm version of the following image:

Mirror Wood 2 28163 by Thomas, on Flickr
This was one of the reasons I bought this printer: You can easily define your own paper-formats up to 950mm (1) of length. This is ideal for panos!
Cut this format from a 17" roll and feed it as a single paper and it prints beautifully. The only restriction: customized formats cannot print w/o borders. But you're losing only 3mm on each side which is easily covered by any normal frame. So that shouldn't bother you.
The other reason I chose this shot were the pastel colors which are normally much more critical to reproduce than some lollipop-colors. The judgment is still out how good the output is, because I could only view the print under nondescript incandescent light and the colors have to dry some time to settle for their final appearance. So I'll report back when conditions allow. Also with my setting of the Lightroom 3 printer module and the printer-driver to achieve those results...