Severe metamerism using QTR for brown tone B&W
2015-04-10 by david@...
I make B&W with a heavy brown tone. Far too heavy for ABW to handle. When using Epson's inks (I also have a multiple carbon ink 3800 set up) I have always had a top fill layer set to the brown tone I want. This has worked fairly well until recently, causing me to try QTR with Epson's OEM inks. I selected a warm profile from those prepackaged with QTR and added toners; M, LM and Y.
The result is substantial metamerism. Far more than the little bit I get using the Epson driver with my top fill layer.
Does any of this sound familiar to anyone?
Any ideas/suggestions?
BTW, the reason I decided to try QTR with toners was that in making a print for a collector, I suddenly had very inconsistent color problems. Instead of a uniform brown using the aforementioned top fill layer, some areas of the image were going decidedly green. I ran a nozzle check, cleaned, aligned, everything. The green remained. Oddly, I got one good test print when I first started trying to print the image. All others from that point had green in them. Tried printing other images... no green!
Thought perhaps a corrupted file, but couldn't find anything to support that idea. Has anyone ever seen this? It used to happen with an HP printer too.