I hesitate to post what’s on my mind, I want to be clear I’m not one to start an argument!
In that spirit, I have to say I’ve been using an inkset developed by Paul Roark on my Epson 1400. I also have a 1430 that I’ve put in storage loaded by Piezoflush thanks to some coaching here at IJM. I have what I like to call a hybrid approach. Paul has very generous with his skills and has been helpful to many of us. I confess to some loyalty issues here!
His 6 position inkset originally consisted of one cart filled with 100% Eboni and five carts of varying dilutions. Eboni has a new formulation now, slightly warmer. So the current inkset eliminates the yellow position dilution which contained about 2% Eboni, and instead uses a cyan/blue ink which cools the effect of the warmer Eboni. With QTR it’s possible to vary the warmth/neutrality of the final print - I was pleased to see your 5K allows some tonal variation also.
Perhaps you know all this, sorry to be redundant! But a drawback is that traffic in the Yahoo groups has diminished to a rather disturbing low. I believe this is due in large part to the shortcomings of the Yahoo group structure. I’m somewhat envious of the lively activity here on IJM. Here, I’ve learned a lot from say the videos posted by Dana, for example. I’m about to place an order for the new carts IJM has developed for the 14xx. Like I say, a hybrid approach. Running low on Piezoflush too.
Why am I posting this? I’ll be watching your R&D on the K5 inkset with great interest. I doubt I’d be using the 6th position for GO - I’ve come to appreciate mat paper - strange, in the darkroom I preferred Ilford’s gloss paper air-dried to a lovely semi-gloss. Or Agfa sometimes for a warmer look. In the digital world I’m using Premier Art FineArt in the 205 gm/sqm weight, also known by its Epson packaging as archival Scrapbook paper. Lately I’ve been using Red River Aurora Art Natural.with promising success.
I hope you’ve taken my comments in a supportive way. I have great respect for the thoroughness and quest for improvement shown here, under Jon’s leadership and a dedicated staff. Let’s hope all our approaches advance the art of b/w digital printing to everyone’s benefit.