Homer,
Are you going to use QTR or the Epson driver?
One of the issues that needs real world testing is the method of achieving a very high dmax. The 100% PK hits its dmax too soon and at too low a level. We've noticed for a long time that LK inks can often hit a higher dmax than the PKs. The problem is that holding down the dry time to avoid pizza wheels argues in favor of the PK. In my 1430 glossy beta --
I use a 50% PK ink in the C position. On at least some papers, having this ink carry half of the load at the 100% black point increases the dmax significantly -- from L=8.3 for a "standard" profile to L=4.7 when the black end point is 50% C and 50% PK. This probably only works with QTR.
So, what we are doing here is taking control of the particle load that generates the dmax. It's a balance of dry time v. dmax. With the printer at its highest quality setting, the paper may well have plenty of dry time before hitting the exit rollers. I have not seen pizza wheels yet from this approach, but more experience and different papers may produce different results.
Paul
On Wed, Jun 1, 2016 at 4:52 AM, homershannon@... [DigitalBlackandWhiteThePrint] <DigitalBlackandWhiteThePrint@yahoogroups.com> wrote:
I picked up all the necessary materials to mix up a batch of your new "universal" ink set. I'm referring to it as PR-U (Paul Roark Universal).
I got the amber base from MIS and received the shipment quickly and with out any problems. Contrary to what is seen on this forum, MIS still can ship an order completely and on time. I purchased a 4 oz bottle of WJ1122 from Printer Filling Station - buying 16 oz from MIS seemed like overkill. Four ounces of the black ink is enough to make 120ml of each tone and that's enough for twelve fills in the 1400/1430. I got the Canon toner inks from inkjetcarts.us. The total cost for all of the materials (and I still have gobs of toner) was $100 even, including shipping and a couple of spare bottles from MIS.I haven't had time to do any serious printing with this ink set yet. After mixing up the batch I ran into the usual fresh-cart issues, including a cart that apparently is actually bad. After sorting all that out and getting a good nozzle check, I did print a test sheet using G2.2 settings. This print is overly dark and too warm for my tastes, but I can see from this test print that this ink has very deep blacks and real potential.In fairness though, I'm just at the starting gate. I'll need to use QTR to make a custom profile for my favorite black and white paper, RR UltraPro Satin, which will take more time than I have immediately available. Surely there will be a rainy weekend sometime this month! I'll sort it out then.Homer Shannon