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I don't know how dilution rates affect the printed density, However, I can tell you that for the 3880 the printed densities for the LK and LLK are 52% and 15% respectively of the density of the PK. In other words, 100% LK gives the same density as 52% PK and 100% LLK gives the same as 15% PK...

The point I was trying to make is that the green colour that you show is not consistent with what I, and others, find with the printed colour using the Epson K3 blacks. It is universally accepted in the QTR circles that the K3 blacks are very warm, so much so that for warm-toned B&W the blacks...

Have I misunderstood your post 64 where you refer to UCK3? I take this to mean that the greenish tint is from OEM PK pigment. Is this not the case?

I'm not convinced that the colour you see in the highly diluted pigment ink is representative of how the ink looks in normal concentration on paper. Your glass of diluted ink is a suspension of sub-micron pigment particles (<200nm) which will scatter the light in a complex way. The green tint...

Didn't Ansel Adams say that the negative was the (musical) score and the print was the performance? I'm with him on that. Now, I'm not claiming that I'm in the same league as Ansel A, but in the digital realm I treat the RAW file as the score and the edited image as the performance. The print...

If you're looking at a new scanner like the V850 then you're talking about doubling the investment you've already made in the printer. Ouch! For many years I used a Canoscan FS4000 to scan B&W negatives for myself and for others - did a very good job with a resolution of 4000ppi. Eventually I...

I use a few papers, some OBA-free and others with varying amounts of OBA. Like you, I have an i1Pro without the UV-cut filter. I have to admit that I never try to compensate for OBAs when I make a profile with Argyll and I have never had any real problems. I recently profiled four RC papers...

Sorry - when one is familar with an application it is easy to forget that others may not be! The large pane in the display represents the image that has been read in to analyse the profile performance. This image is also shown in the small pane at the top right. The large pane can display many...

Sorry if it is confusing. This is my explanation of what is happening;- We load the Grainger rainbow image into Gamutvision using the Read Image for analysys and set the input profile (1) to sRGB. This limits the actual colours to something closer to the printer gamut. You can of course use...

If want nice bright colours and you're not too worried about print life then Cone's InkThrift sounds like it was made for you. No personal experience, but Cone speaks highly of it for short-life work, and I would rather trust him than most other vendors.

It seems that almost everyone believes that dye inks give a wider coour gamut than pigment. Without wishing to start a gamut war, I believe this is a bit of an urban myth. Of course a lot depends on the paper, and the baryta used by @nrdlnd is ideally suited to pigment ink. Dye inks do not...

What I was suggesting was a method to compare the rendering of two profiles directly, not using soft-proofing to simulate the printed output. The comparison does not rely on the accuracy of the monitor or any other parameter. It's a way to compare two profiles without using a program like...

Yes, they are very similar. I cannot see any significant difference in Gamutvision. I have tried to compare them using the soft-proof facility in PS, but there is a bit of a problem in that both profiles seem to have the same (internal) description tag. Photoshop uses this tag rather than the...

What exactly do you mean by "some banding"? If you have any banding then there is something seriously wrong somewhere. If the banding is in smooth colour gradients or density gradients then the profile is usually to blame. Poor accuracy in the measurement of the charts is likely to give a...

In your position I would think very hard before investing in any machinery for this job. Pad printing is a well-established process, but like any other process there is a finite learning curve, and the processs needs careful control. The machine that you linked to, although very basic, may well...

Not so different. Very small increase in colour gamut, but otherwise very similar. I think it would be very difficult to see any difference between the three profiles, but you have to decide that from some real images.

I suspect we are splitting hairs now! The 1152-patch profile is similar to the other, but not identical. The colour gamut is a tiny bit bigger, but the accuracy (CC24) is much the same - still essentially perfect to the eye. The B&W response is a bit different, but still shows a gradual fall-off...

What test prints have you have you used? If they are your own images, especially if they are portraits, they may not show up the differences. The analysis is interesting, but with no real surprises. The colour gamut on the baryta paper is very wide, typical of a baryta with pigment ink. Colour...

If you had lots of reading errors, repeating the readings "until they were OK" did not improve the accuracy of your data. I can't say why you had lots of errors but it just indicates that the charts were not optimised for the measuring instrument. As for the reported errors in Argyll, you have...

I think there is a danger in chasing the maximum number of patches on a sheet. You say that you can read a particular patch density "without too many misreads". If I have to re-scan a strip and the re-scan is accepted it suggests to me that the random errors are too large - that is, I am working...