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#16 | |
Addict
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Join Date: Mar 2013
Location: Spain
Device: Kindle, Kobo, PocketBook, Tolino, Bookeen, Onyx Boox, Boyue.
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#17 | |
the rook, bossing Never.
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Join Date: Jun 2017
Location: Ireland
Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper11
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I don't think there is a real ereader market for any current colour digital paper system. The E ink company is aiming at retail, advertising and similar. You'd need as fast as mono (for page turns), 300 dpi and nearly as bright without lighting as regular eink. I think the 32,000 colours would be OK, or 4,000 at 600 dpi (then you could dither). The C Y M K layer system is the best bet, but even colour slide reversal film isn't clear enough for passive reflective display, so basic physics seems against it. There was more chance of Mirasol doing it, but it was poor and bought by Qualcomm. It was over 10 years ago that there was a product. Invention over 15 years ago and the R&D stopped by 2015. Enough built in lighting kills the power saving of a bistable "paper like" display that needs no refresh, so either quantum film* LCD or true LED (rather than OLED/AMLED which are really electroluminescent dots with phosphor and filters) are the future for colour tablets and readers. The colour panels by E Ink company that are not simply filtered regular eink are competing with Monitor panels in Retail, they are not viable as ereaders. (Quantum Fiim on LCD is marketed as QLED by Samsung. It uses efficient pure blue real LEDs as a backlight for a mono LCD. The green and red stripes are quantum films that shift the blue light down to red and green instead of having the R G & B stripes. Thus they can use maybe 1/4 power or be visible in sunlight. Life is longer than OLED and "white" LED backlights because they are blue-violet LEDs with a yellow phosphor. Some LCD panels use longer life R G & B LEDs, but that's expensive.) |
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#18 | |
Grand Sorcerer
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Join Date: Apr 2011
Device: pb360
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amazon waited until they could deliver a writing friendly screen without blurring text beyond readability before releasing the Scribe. Given Quoth's comments on color and speed, I don't think we will be seeing this from amazon any time soon. |
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#19 |
Junior Member
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Join Date: Aug 2021
Device: Likebook Mimas, Kindle Paperwhite 3, Onyx M92
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would a traditional tablet better suit my needs? (ipad/android tablet).
I have an older android tablet and a work issued ipad but i didnt want to use them due to glare eye/strain issues I was predominately looking at e-ink due to potential eye-strain issues (id be looking at the device for potentially 4-6 hours per day). Not every day but possibly 2-3 days in a week. should I wait for pocketbook viva? or for other ones to come up next year? thanks |
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#20 |
Junior Member
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Join Date: Aug 2021
Device: Likebook Mimas, Kindle Paperwhite 3, Onyx M92
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i was primarily interested in color e-ink due to glare/eye strain issues as id be potentially looking at a screen for 4-6 hours a day, 2-3 days a week.
i have an older android and also a work issued ipad. should i wait for the viva, and also any other ones that might come up next year? from what it sounds there isnt anything in the market atm that is suitable Thanks |
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#21 | |
Bibliophagist
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Join Date: Jul 2010
Location: Vancouver
Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos
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I seem to remember one article that mentioned that with Gallery 3, 50,000 colours were possible though the only mention I remember from Eink's site was that E Ink Gallery Plus could have up to 60.000 colours. |
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#22 |
the rook, bossing Never.
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Even if in one capsule, the only way to use CYM + black/white is in layers.
But inherently the true primary colours and tertiary colours will be darker than Cyan, Yellow or Magenta. And Cyan, Yellow or Magenta if perfect are each 2/3rds as bright as white. It's basic physics. Obviously coloured pigments are not as bright as perfect unless they have fluorescent compounds. It's significant, IMO, that the E Ink company only mentions Retail, Signage etc, and not coloured ereaders. It's very slow and poor brightness without a front light. Indoor Retail display can use mains. Outdoor facing windows will have daylight brighter than most indoor reading ambient light. Gallery 3 appears to be speeding up Gallery Plus (still very slow) and slightly improving brightness/contrast. It's not going to have more colours. |
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#23 | ||
Bibliophagist
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As for your comment about Eink not mentioning ereaders, to quote from an Eink press release (i'm going to assume the direct quote in the second paragraph might be construed as mentioning ereaders: Quote:
E Ink ACeP capsule animated GIF link Last edited by DNSB; 12-14-2022 at 09:34 PM. Reason: Edit: changed image link to clickable |
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#24 | |
the rook, bossing Never.
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Cyan is transparent to blue + green light, blocks red Yellow is transparent to red + green light, blocks blue Magenta transparent to red + blue light, blocks green Thus red is yellow and magenta layered. green is cyan and yellow layered. blue is cyan and magenta layered. The Cyan, yellow and magenta will be brightest. Red, green and blue will be dimmer. The main advantage over the mono with stripes is higher resolution. It will still be poor compared to a mono only display for brightness/contrast with no front light on. Obviously it has 50,000 approx colours rather than 4000 approx on regular filtered eink, because it's not the same cell technology, it must have more than 14 shades of grey, white and black, but this makes it dramatically slow. While they aim to do a decent screen for a colour ereader this is not it yet. |
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#25 | |
Bibliophagist
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Location: Vancouver
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![]() As near as I can tell from some of the image supplied, the magenta and yellow pigments would be floated to the top of the cup/capsule to produce red with white being mixed in to produce lighter shades of red. Black was achieved by floating the cyan, magenta and yellow to the top though this is more likely to achieve a muddy brown than a true black (hence the reason that in printing, they use CMYK to allow for a true black). It may not be the greatest system but I'm going to wait to see how it does at reproducing the limited colour gamut of a comic for example before writing it off. It may not be perfect but there is a chance that it will be good enough. I've attached one image, several others are available for a few minutes searching. |
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#26 |
eReader Wrangler
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I'm not in the market for a color E-Ink eReader but, apparently, PocketBook has seen enough interest in their two current color eReaders to commit to another one. It's undoubtedly a niche market, but so are eReaders in general.
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#27 |
eReader Wrangler
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If I (personally) was in the market for a color eReader I would have no problem with PocketBook Viva. I like my PocketBook readers. I'm pretty sure the screen response and resolution will be pretty much the same no matter what company you pick.
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#28 |
the rook, bossing Never.
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#29 |
eReader Wrangler
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#30 |
the rook, bossing Never.
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Rakuten/Kobo did have a tablet for colour and Amazon still does the Fire, sometimes only $50. Any coloured digital paper thing is much more costly to make and would have to sell at $500 or more. Unless new technologies appear. The E Ink corp dominates the digital paper panel market.
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