How much pigment does contain the inks?

[Ink stained Fingers]

in other words they were *matt-compromise*-inks. Therefore I wanted to make an extra (matt-print) inks which would be better for matt-paper.

What would be the compromise - those inks print matte on matte papers, there is no need for separate light matte inks.
Yes, you can use the newer HDX PK with the 3880, you get a better black level, and you should create new profiles so that the driver/photo printing software knows the correct black level for the black point compensation.

 

[Logo]

I am not sure which inks should I use on Epson 3880......K3 or HDR?
K3 big-format-cartridges are very cheap today (Ebay) . HDR ist not much expensive than K3.

I know HDR-yellow is not good UV-stable. But K3 is also not more UV-stable than the HDR, aren´t it?
It`s said that HDR-inks have better gamut. Why? Becouse the inks are better made? Or because of the additional green and orange?

If UV-stability are the same and if the gamut on the HDR is better only becouse of green and yellow, than, I see no reason HDR is better than K3 (for Epson 3880 printer)

 

[Ink stained Fingers]

that's all questions separate to the B/W issues and rather would be posted better in a separate thread. General answers are just not possible for all different suppliers for these inks.

 

[Yianni]

Dilution is not the way to make the grays. For example the Light Magenta doesn't contain magenta pigment in lower quantity, but it contains a light magenta pigment.
With dilution you depend on the paper absorbent.
Buy them ready for use. Even inks for another Epson model, like the 9800.

 

[nertog]

This is incorrect. Light inks have less pigment loading compared to "normal" inks. Pigment particle concentration differs quite a bit depending on the ink recipe and colour, but in general it lies between 5 and 10%.

You can find a lot of detailed information if you do a patent search

 

[Yianni]

You are right, my mistake.