I’ve sent you and Wells an email about the ink swap needed to move forward on this. Hopefully we can work something out. I’ll post separately about the switch to P2.
[QUOTE=jon;8733]the R1900 takes about 30 seconds to pull out the mk cart and insert the pk cart. this is how Piezography users have been printing with the R1800, R1900, R2400 and R2880 since many many years ago. why reinvent the wheel?
just pull out the MK to print glossy and put in the PK - GO should be in the LLK position already. then put the MK back in when you want to print matte. No head cleaning other than inserting the cart is required. that’s how it is designed to be used and how it has been used for many many years. i’m not certain why you are trying to use it in the way that you are.[/QUOTE]
I’ve been reflecting on these comments. There’s a deep irony here. It’s not clear whether you were allowing for this, but there is a mandatory head cleaning required by the printer when you switch carts on these cart-on-head printers, unlike the printers with ink lines and dampers. And this is the source of the irony. Let me explain.
Once upon a time I was printing with a 2100 (K2), printing colour on gloss and B&W on matte using QTR. However if you swap often enough then you quickly get sick of the mandatory head-clean as part of the MK/PK swap, esp at OEM small cart prices.
So I thought that having a dedicated B&W matte printer was the way to go. I researched B&W inksets and opted for piezo over the much cheaper Roark inksets because of the reputation of the latter for clogging.
This was at about the time that the 1400/1410 came out and you were talking up its 1.5pl drop size. It was an inexpensive introduction, so I had the 2100 for colour gloss and 1410 for B&W matte.
In a moment of rashness, a few years later I upgraded to the R1900, partly to get K7 rather than K6 (more on this below), but as I recall it was still all-matte for piezo at that point.
Fast forward a couple more years and you could do gloss piezo, but you have to swap MK & PK. Fortunately by the time I got around to doing this, it was known that WN1 didn’t lose any dmax on matte, and so I was in the happy position of being able to have both a colour and B&W printer and still not have to do the dreaded MK/PK swap.
But those happy times are over. Or are they?
The irony in all this is that I took up piezo precisely in order to avoid what what you are encouraging me to do. If I was prepared to “use the system as it was intended”, i.e. flush ink down the waste tube at every ink change, then I probably wouldn’t be here in the first place. That’s the irony.
As Jeff said in another thread, we’re just as concerned as anyone here about print quality. That’s why we’re here now. But speaking for myself, I have an aversion to unnecessary waste. I really don’t like flushing ink down the tubes. Yes, if we’re going to print then we’re going to have to consume ink and paper and carts - you can’t make the proverbial omelette without breaking the proverbial eggs. And not all of it is going to be productive - there are drafts, proofs, linearisation plots, unavoidable head cleans, etc. But I really object to the MP/PK swap waste.
And the 3880 is worse. If you need to do the swap every two weeks to keep the ink flowing then that’s 6ml for the round-trip each time, and over 12 weeks that’s 36 ml of ink and in six months you’d have flushed an entire cart’s worth of ink down the tubes. Seriously?
Discovering that I can get P2 to work on the R1900 was a great relief. I think it makes even more sense on the 3880. I have never seen a benefit from switching from K6 to K7 and to be honest I felt initially like I wasted my money when I upgraded to the R1900. I don’t really feel that way now, as there is a much better build and the option for gloss, but I have always regarded shade 7 as an unnecessary extravagance. Perhaps those printing a lot of high-key images in large sizes might benefit, but who else?
Why am I engaging in this rant? Because I think you have the solution already available. I think P2 is the answer. In my view, in the absence of a universal black, P2 is a less wasteful form of piezo. My suggestion is that you promote P2 to a greater extent, even in printers where you feel that it is not needed, and complete the set of P2 curves for common papers.