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Hi ISF, Wouldn't it be a better check to print some known LAB values (so basically a profile sheet) with absolute colorimetric rendering, measure the patches and compare them to the input values? Repeat for each of your 3 samples and you've got a clear answer of which one is most accurate...

Nice work, both of you! It would be *very* interesting to print some patches and measure the absolute color accuracy of both profiles.

Hi everyone. Short update: I am still following this thread, but at the moment it seems that there are too many scattered "maybes" to make this do-able for me. Let's see how things develop...

BYK-348

Yes, mainly for pigment inks. I found Paul Roark's ink base an excellent starting point (https://www.paulroark.com/BW-Info/Ink-Mixing.pdf), although I found using less glycerin and more PEG 600 to deliver better droplets, especially in more fussy printers. I used a silicone-based surfactant...

The actual ink bubble is not heated to any significant degree...and only a very small portion is flashed to vapor. Yellowing is not an issue. In any case, my personal experience is that without pyrrolidone as a co-solvent, printhead lifetime is very short, even with dye-based inks (and the...

While this might work in the short term, you really need an anti-kogation additive to prevent solid deposits on the heaters inside the nozzles. As a pharmacist you should have access to N-Methyl-2-pyrrolidone :)

It could very well be that the OEM red ink is just a mix of their magenta and yellow inks. Maybe Epson's goal here is not to extend the color gamut, but to provide "smoother" prints (less dot visibility) in orange and red tonal areas.

Hongsam does offer Canon compatible Evernew dye inks. Their pigment inks are decent as well and have gloss characteristics similar to Epson OEM inks. The only clear exception is photo black, which has a rather high L value of 8 to 10 on RC papers. I have not tried their matte black. That would...

Hi everyone, Extensive fading tests done by @Ink stained Fingers have shown that Hongsam Evernew dyes are a worthy competitor to Epson Claria inks and perform significantly better than most 3rd party alternatives. As there was some interest by others in acquiring those inks and availability...

Hi Clarence, I was wondering how you extracted the above data from the Epson drivers? Is your Python script available for download? I would be interested in checking my R3000 as well :)

Back in 2017 I ordered the Evernew HLF dyes for 12 USD/l and their K3 pigment inks for 25 USD/l. Shipping and taxes not included, of course. They seem to be ok with relatively small orders (0.5l/color).

2 reasons why not: Canon has a quite visible print raster (or high dot-visibility) with their pigment printers and I dislike thermal printheads in general. Nearly every time I see prints from an HP or Canon printer I can see unevenness in dot ejection, which leads to a similar issue as what I...

Yeah, the ink tanks are clean. The R3000 uses a stationary cartridge system with ink supply lines and dampers, so the actual ink tanks do not influence ink flow that much. The dampers are also clean, btw. In the end, I sold the printer for parts. On my last R3000 now...time to look for a good...

You're not going to find colorant details in the MSDS. If you do want to know what is actually used, I recommend doing a simple search in the EPO or USPTO patent archives. There are tons of patents that detail specific ink and colorant formulations. The common CMYK dyes are well known and...

Thanks for the suggestions. @ The Hat: the printers are squeeky clean, and the purge station and wiper blade work as intended. @ ISF: this was my thought as well, but I had a closer while printing and you can actually see the thin white lines in one single pass of the printhead, so it is...

The printhead traveled from top to bottom on this particular scan. Both the Epson driver and QTR (in calibration mode) show the same artifacts. In fact, in noticed it first in prints done with the Epson driver. The coding strip is clean, paper, feed encoder as well. It really seems as if...

Hi experts, I recently refurbished 3 old Epson R3000 printers. No problems in getting complete nozzle checks, but that clearly didn't mean artefact-free printing. Does anyone know what is causing the very uneven printing seen on the picture below? The print itself is a 1440x1440dpi...

Thanks! I had a look at the different profiles and compared them to mine. The Cenado gamut is similar in size and volume to what I get on my testbed, but the Hongsam inks you tested show a much higher saturation in the magenta range. I would say these are not the same inks as the Hongsam...

Thanks again for the interesting info! The Hongsam inks I use show that relatively stable black ink behavior as well...and the other colors seemed subjectively quite good. Your test show that this is not completely true :) Do you have gamut plots available for the inks you've tested here? I...