geo@... wrote:
... about filling the cartridges, any hint where I could find information on specific procedures?
I put my folder of materials I found on dealing with the backflow valves, with some help from Ernst, at http://www.paulroark.com/BW-Info/Refilling7800carts.zip .
...
QTR has the 10000 listed, ...
Good. QTR is easy once you learn it. There are materials that can lead you through the process easily when you're interested.
Paul, do you find the idea of exchanging eboni C and LC for similar dilutions of Vivera black makes sense? I kind of interpolated that idea from some of your suggestions for glossy/matte flexibility. The 10k only having six slots, and solely looking at matte prints, I thought this might be an option for tonal control.
Using HP grays or PK dilutions works well to make a print more neutral. I do that with my 7800, using Eb6 in most channels, but having 2 HP channels. With QTR you can profile the system as 2 separate monotone profiles and then use sliders to decide what percentages of each you want in the print. Later you can combine these easily into a single profile for easier re-linearization.
The question is really what print tone you want. I'm coming from a "western landscape" cool tone silver print background and tend to like my B&W's to look rather neutral. All carbon is warm, but Eb6 on select papers has a low paper base to maximum Lab B change that allows it to look neutral on the wall with appropriate mat board. (Try Alpharag Artcare Pearl White 8 ply -- roughly matches the tone of the highlights on the papers I like, stopping them from looking yellow.)
Nevertheless, I do find that the inclusion of some (30%) HP makes my clouds, snow and the like look a bit cooler. Whether it's worth the subtle difference to mess with the HP inks and lose the ability to market as "100% carbon pigment" (FWIW) is questionable, but I do appreciate the flexibility to do more neutral.
Note that if you want warmer than Eboni, you can use MIS 100% carbon LK and LLK as warm toners.
Paul