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Old 09-04-2013, 10:26 AM   #1
Alexander Turcic
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The secret behind the new Paperwhite: E Ink Carta

Some of us have already wondered what "Carta e-paper technology" is all about when Amazon unveiled the Paperwhite V2 yesterday. Well, here we have the answer, folks! Carta is the latest imaging film employed by E Ink for their e-paper screens. According to their website, Carta offers enhanced readability ("a dramatic 50% increase in contrast over earlier generations") and smoother page turns (supporting "the new Regal technology").

E Ink Carta specifications in detail:
  • Imaging Component: E Ink Carta ePaper Display Film
  • Contrast Ratio: 15:1 (min)
  • White State: 74 (min)
  • Dark State: 19 (max)
  • Color Resolution (# Bits): 1-Bit (B&W);4-Bit (16 Gray Levels)
  • % Reflectance: 44%
  • Viewing Angle: Near 180°
  • Image Update Time: 120 msec (1-Bit)
  • Update Modes: Full & Partial Page Update, Pipelined
  • Available Display Sizes: 1.44 to 13.3 in
  • Display Modules: E Ink Mobius Flexible Display, as well as Glass TFT

Source: spec sheet (PDF)

Related: All-New Kindle Paperwhite V2 (accidentally) unveiled. So what's all new?
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Old 09-04-2013, 10:28 AM   #2
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I want I want I want I want I want I want I want!!!

(That's the bad part of living in Brazil... At least there is the Carnival.)
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Old 09-04-2013, 10:29 AM   #3
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wipes a tear from her eye

I will own one. I love my K3 but I like reading without the light on and will cave and buy a PW.
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Old 09-04-2013, 10:33 AM   #4
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Device with an E Ink Carta screen.
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Old 09-04-2013, 10:33 AM   #5
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wipes a tear from her eye

her eye?...
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Old 09-04-2013, 10:35 AM   #6
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"Regal technology":

Quote:
The new display has been specifically tuned for reading applications, fully supporting E Ink Regal™ waveform technology. Regal waveforms dramatically reduce the need for full page refreshes after a few page turns. This enhances the reader's experience by providing smoother page turns and more focused reading.
Press release
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Old 09-04-2013, 10:38 AM   #7
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I want I want I want I want I want I want I want!!!
Yep, that about covers my feelings on the matter
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Old 09-04-2013, 10:45 AM   #8
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Here's to the next Kobo getting the Carta. Kindle's still bug me with restricted storage and clear locked down eco system.
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Old 09-04-2013, 10:52 AM   #9
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Here's a Yahoo article about the new tech...
http://finance.yahoo.com/news/e-ink-...130000456.html
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Old 09-04-2013, 10:52 AM   #10
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A comparison to the Pearl Spec Sheet is worthwhile.

Dark:Light on pearl is 24:70
Dark:Light on carta is 19:74

Quite how those numbers get converted into a contrast ratio I'm not sure, but it certainly does have a lighter white and darker black.
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Old 09-04-2013, 10:56 AM   #11
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While it's interesting I'm not convinced that it's worth paying the price tag to upgrade as I already own the first Paperwhite. I did pre-order one so I will be able to see in person any improvements without trying to see them while under a store's blindingly bright lights. I find that screens are a lot different to my eyes once I am outside the stores overhead lighting. I notice that previous Kindle screens look positively awful in stores, even worse if the touch screen devices have had a lot of handing.

Anyhow I pre-ordered one as a birthday present for my Mum who's default Kindle is a Kindle Touch. From KT to PW 2 is probably more worthy of the upgrade than PW 1 to PW 2.

As someone whose been actively addicted, as I admit fully, to eInk technology I would be interested in not only how books look but any performance improvements that might be present. I should be able to satisfy my curiosity when my Mum's PW is delivered.
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Old 09-04-2013, 11:02 AM   #12
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Reflectance has gone from 40.7% to 44%. A very significant increase.

1st gen EInk has reflectance of 32-35%
2nd gen (Vizplex) has reflectance of 40%
3rd gen (Pearl) has reflectance of 40.7%
4th gen (Carta) has reflectance of 44%

Still not quite paperwhite, but getting there!
(paperback paper is around 60-70%. Glossy magazine paper around 80-90%)
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Old 09-04-2013, 11:06 AM   #13
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I wonder how long will take for Amazon to release a color eink device.

I also wonder if at some point, Amazon will buy eink. I may be wrong but if they really want to push further and stick to eink devices, they may save more long run if they took that step, i.e, manufacturing costs and patents.
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Old 09-04-2013, 11:12 AM   #14
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Originally Posted by Alexander Turcic View Post
Display Modules: E Ink Mobius Flexible Display, as well as Glass TFT
Am I reading this correctly - the glass substrate is gone? If so, I'm definitely upgrading!
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Old 09-04-2013, 11:16 AM   #15
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Am I reading this correctly - the glass substrate is gone? If so, I'm definitely upgrading!
Not necessarily - the specs for the Pearl display say exactly the same thing.
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