The contrast improvement is welcome for sure, but it remains to be seen what difference 15% white reflectivity makes.
Previous Kaleido products are fundamentally flawed. I'd hoped they would bin it for something better rather than make incremental improvements. Think it's also debatable what value colour brings unless you are regularly reading full colour magazines, PDFs etc.
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real_faxenoff
I've always wanted a color E-Ink tablet, but I could never figure out exactly why.
Doctor, what's wrong with me?
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MattTheRealOne
Hopefully this means a new Kobo Libra before too long.
OptCohTomo
https://opg.optica.org/oe/fulltext.cfm?uri=oe-33-3-6017
See section 5 on Kindle display measurements by optical coherence tomography. The Kaleido display is similar but with a matrix color filter layer. Those images weren't published.
user3939382
This is a genuine question not snark — are these the people with the patents holding up the entire industry?
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xd1936
I wish there was a DIY company targeting hobbiests that sold large poster-size eInk panels with tinkering in mind, like TRMNL or InkPlate.
show comments
Simboo
Oh gawd yeah. Please, all I desire, all of my wishes, schematic and PCB layout on E-Paper. Please
IncRnd
I was unable to load the page or cache. I have the Boox Tab X C. Does anyone know how the device being discussed compares?
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packetlost
Too bad this didn't make it into the new Kindle Colorsoft. Oh well
prometheus1992
for anyone who already has a colored reader - is it better than ipad? i enjoy reading on my ipad and i can read for 2-3 hours on it daily without feeling any strain on my eyes.
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BoingBoomTschak
Still nothing for people who don't care about the color gimmick? I mean my Aura One is still going strong, but I fear it'll never be replaced by something better (or even as good).
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IshKebab
This is their colour filtered black and white product. Quite muted colours in the past and it only really works well with a front light, which kind of ruins the point IMO.
I'm much more interested in their Spectra and Gallery displays which use color pigments. You can even buy e-ink gallery style displays for a totally unreasonable price!
Actually to be fair that is not a totally crazy price.
show comments
abletonlive
Amazon just refreshed their colorsoft kindles with Kaleido 3 so this is an interesting development. I wonder if Amazon had a heads up, I would have buyer's remorse right now if I bought a new colorsoft kindle recently knowing that there's a better version of the screen just around the corner.
show comments
cubefox
The problem with this technology is that it uses conventional colored subpixels to create arbitrary colors via additive RGB mixing. This results in a rather dark image, because the screen swallows two thirds of the incoming light.
For example, if you want to show a red surface, you have to make the green and blue subpixels black, resulting in an overall dark red. This problem does not exist for colored paper, monochromatic E Ink screens. Nor does is exist for active LCD or OLED screens, which also use subpixel color mixing, but do not have to rely on ambient light.
The electrophoresis-based screens from E Ink actually support more than two colors (e.g. black/white/red or black/white/yellow for signage) without using subpixels, but that's not enough to create thousands of colors for arbitrary content.
I think electrophoretic e-paper screens are just not suited for subpixel-free colors, but other promising e-paper screen technologies have been abandoned a while ago.
Mirror (eink.com isn't working for me): https://web.archive.org/web/20261015180401/https://www.eink....
The contrast improvement is welcome for sure, but it remains to be seen what difference 15% white reflectivity makes.
Previous Kaleido products are fundamentally flawed. I'd hoped they would bin it for something better rather than make incremental improvements. Think it's also debatable what value colour brings unless you are regularly reading full colour magazines, PDFs etc.
I've always wanted a color E-Ink tablet, but I could never figure out exactly why. Doctor, what's wrong with me?
Hopefully this means a new Kobo Libra before too long.
https://opg.optica.org/oe/fulltext.cfm?uri=oe-33-3-6017 See section 5 on Kindle display measurements by optical coherence tomography. The Kaleido display is similar but with a matrix color filter layer. Those images weren't published.
This is a genuine question not snark — are these the people with the patents holding up the entire industry?
I wish there was a DIY company targeting hobbiests that sold large poster-size eInk panels with tinkering in mind, like TRMNL or InkPlate.
Oh gawd yeah. Please, all I desire, all of my wishes, schematic and PCB layout on E-Paper. Please
I was unable to load the page or cache. I have the Boox Tab X C. Does anyone know how the device being discussed compares?
Too bad this didn't make it into the new Kindle Colorsoft. Oh well
for anyone who already has a colored reader - is it better than ipad? i enjoy reading on my ipad and i can read for 2-3 hours on it daily without feeling any strain on my eyes.
Still nothing for people who don't care about the color gimmick? I mean my Aura One is still going strong, but I fear it'll never be replaced by something better (or even as good).
This is their colour filtered black and white product. Quite muted colours in the past and it only really works well with a front light, which kind of ruins the point IMO.
I'm much more interested in their Spectra and Gallery displays which use color pigments. You can even buy e-ink gallery style displays for a totally unreasonable price!
https://inkposter.com/products/inkposter-tela-28-5?variant=4...
Actually to be fair that is not a totally crazy price.
Amazon just refreshed their colorsoft kindles with Kaleido 3 so this is an interesting development. I wonder if Amazon had a heads up, I would have buyer's remorse right now if I bought a new colorsoft kindle recently knowing that there's a better version of the screen just around the corner.
The problem with this technology is that it uses conventional colored subpixels to create arbitrary colors via additive RGB mixing. This results in a rather dark image, because the screen swallows two thirds of the incoming light.
For example, if you want to show a red surface, you have to make the green and blue subpixels black, resulting in an overall dark red. This problem does not exist for colored paper, monochromatic E Ink screens. Nor does is exist for active LCD or OLED screens, which also use subpixel color mixing, but do not have to rely on ambient light.
The electrophoresis-based screens from E Ink actually support more than two colors (e.g. black/white/red or black/white/yellow for signage) without using subpixels, but that's not enough to create thousands of colors for arbitrary content.
I think electrophoretic e-paper screens are just not suited for subpixel-free colors, but other promising e-paper screen technologies have been abandoned a while ago.