I've done some further testing, this time on Innova Semi-matte. Dmax using the Fine Art Pearl (more ink) media type was 2.14. On my Epson 4000 with Studio Print I got 2.5. To see if another media type would yield different results I tried the HP
Premium ID Satin media type with the same results. So it seems that for both these papers either the media types need to be modified or maybe the HP ink just isn't capable of producing as great a Dmax as the Epson ink. However, in spite of the lower Dmax, both these papers still look good, it just would be better if they could attain the extra .30. BTW, the Dmax on HP Premium ID Satin paper is around 2.36.
Neither the Hahnemuehle Photo Rag Pearl nor the Innova Semi-matte exhibited any pizza wheel marks or any kind of buckling. However I did notice some mottling on the Innova in 3/4 tone gray areas when I used the HP Premium ID Satin media type. When I used the Fine Art Pearl (more ink) media type, the problem disappeared.
According to the HP PDF for third party paper use there's little difference in ink limit comparing the two satin media settings versus the two Fine Art Pearl settings. The head height differs, could be that drying time differs but both use 16 passes bidirectional weaving.
Given a higher ink limit and enough drying time (unidirectional for example) you may get a higher Dmax with a RIP but it will be difficult to get that with the fixed media settings of the driver.
The ink limit numbers as printed in that PDF do not specify the limits, could be overall, average or max. At least for matt Hahnemühle papers the color gamut was better so far for me with Matt Litho-Realistic (42 ink limit) than with Fine Art Paper (60 ink limit) but the last has better Dmax, the last uses the Quad set so the extra 18 units in the limit could be the PK.
With the firmware/driver changes it will be difficult to keep track of the best media settings in time.
try: [a href=\"http://groups.yahoo.com/group/Wide_Inkjet_Printers/]http://groups.yahoo.com/group/Wide_Inkjet_Printers/[/url]