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Old 05-21-2008, 10:15 PM   #1
mcramer
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Talking Now THIS is epaper!

Epson unveiled a 13.4-inch (A4-size) electronic paper at SID 2008, in Los Angeles, the US. Its pixel count is 3104 × 4128 and definition is as high as 385ppi.

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Now this would handle A4 PDF's very nicely
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Old 05-21-2008, 10:37 PM   #2
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Looks more like a monitor than something that could be used on a portable device.

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Old 05-21-2008, 10:41 PM   #3
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Bob - I think the epaper is just mounted like that for display purposes. The actual epaper itself is just the grey bit.........
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Old 05-21-2008, 10:44 PM   #4
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Bob - I think the epaper is just mounted like that for display purposes. The actual epaper itself is just the grey bit.........
Yea, I figured that. But, what about the big butt controller and power supply in the background. Any idea if this is flexible display?

This is almost to the range of the Harry Potter newspaper... all they need to do is add some animated photos.

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Old 05-21-2008, 11:04 PM   #5
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Demo/prototypes always seem to have big-a$$ power supplies and huge data cables

I guess it will be a while before we see production samples.....
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Old 05-21-2008, 11:10 PM   #6
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Maybe some Epson stock is in my future.

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Old 05-21-2008, 11:19 PM   #7
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definition is as high as 385ppi.
That is a phenomenal pixel density. The highest (nearly) available today for E-Ink is the 5" Vizplex at 200 ppi.
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Old 05-22-2008, 05:29 AM   #8
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Almost twice the current available ppi, but what are the ppi for printed matter than? anyone got a comparison chart?

the problem with color is that effectively, the ppi would be divided by three.
With this new thingie, even divided by three, the ppi is still very good.

Last edited by athlonkmf; 05-22-2008 at 05:34 AM.
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Old 05-22-2008, 07:27 AM   #9
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Offset printing runs ~100-300lpi depending largely on the paper used. Newsprint can go as low as 50lpi but it starts to look really bad (for stuff like posters rather than things you're supposed to look at). Serious glossy magazines (art mostly) can go over 600 lpi but that's rare (and expensive).

If you're looking at printers, 300dpi is reasonable, 600dpi is about as high as makes any difference unless you're using really high grade paper and are fanatical about halftoning gradations. But on common "printer paper" it takes a bit of experience to see much value past 300dpi - most people can tell the difference if you give them two pages side by side, but give them one page and they have no chance at guessing the print resolution.

Also, for black text on white paper, 300 dpi is ample. It's really only for pictures that higher resolutions make any difference, and that's where dot size/intensity control starts to be really, really important. A dot printer (dye sub, bubblejet) that has (say) 16 dot sizes at 300dpi can walk all over a "1200dpi" printer with a single dot size (common in cheap models), especially if its ink control is not very good (so the dot size varies but not under control of the printer).

Personally, 300 ppi at 16 gray levels would be fine for me. I'd rather see more contrast (and contrast control) than more pixels once we get to 300dpi. One thing is that there's almost certainly s a tradeoff there - more pixels means more dead space compared to pixels, so the effective contrast will drop. LCD displays and digital camera sensors have this problem, for instance.

Last edited by moz; 05-22-2008 at 07:27 AM. Reason: i ken spel!
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Old 05-22-2008, 09:56 AM   #10
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Looks great but i wonder how much they will sell these for when they come out, an arm and a leg or just your firstborn child?
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Old 05-22-2008, 11:12 AM   #11
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Looks great but i wonder how much they will sell these for when they come out, an arm and a leg or just your firstborn child?
Both arms & both legs plus your first born through you third born with the caveat that you will lose more body parts if you don't have the kids.
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Old 05-22-2008, 11:26 AM   #12
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Wow. You could cut this in half, and put the halves on facing sides of a clamshell device, slap on some solar cells for trickle recharge, and have a heck of an ebook reader.

Finally, some good news!
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Old 05-22-2008, 12:35 PM   #13
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Wow. You could cut this in half, and put the halves on facing sides of a clamshell device, slap on some solar cells for trickle recharge, and have a heck of an ebook reader.

Finally, some good news!
If you wanted to do that you could use existing screens. Why pay a premium for a large screen and then cut it in half.

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Old 05-22-2008, 12:36 PM   #14
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Maybe some Epson stock is in my future.
Participation at MobileRead might qualify that as "Insider Trading."

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Looks great but i wonder how much they will sell these for when they come out, an arm and a leg or just your firstborn child?
People will pay more for professional devices, and I've always believed that an A4/Letter sized display device would be primarily a professional device.

As mentioned above, they would be too big for casual pursuits, but to replace a clipboard or a laptop in a reference/notation function, they'd be the bomb for professions such as lawyer, doctor, teacher/professor, anyone who handles lots of paper that they don't necessarily need to keep long-term ... and of course every manager on up to CEO who has to display gizmological dominance over his/her "herd."
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Old 05-22-2008, 02:28 PM   #15
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If you wanted to do that you could use existing screens. Why pay a premium for a large screen and then cut it in half.

Dale
It's the resolution that has me excited here, mainly. It could conceivably do two pages side by side, if the text size in the original PDF wasn't too small. That's a big step up from current screens, which are borderline with displaying only one page.

And obviously, you wouldn't be cutting a big one in half.
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